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A: 8 November 2011. Take out your element facebook page Objective : You will be able to: Review electron configuration, ionization and the valence shell Describe trends in atomic radius and electronegativity on the periodic table. Do now : Track your exit ticket (2.10-2.13)

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a 8 november 2011
A: 8 November 2011
  • Take out your element facebook page
  • Objective: You will be able to:
    • Review electron configuration, ionization and the valence shell
    • Describe trends in atomic radius and electronegativity on the periodic table.
  • Do now: Track your exit ticket (2.10-2.13)

With your partner, correct the answers on your exit ticket.

agenda
Agenda
  • Do now
  • Review for quiz
  • Unit 3 Objectives!
  • Trends in atomic radius and electronegativity

Homework: Element Facebook Page: tomorrow

Unit 2 Quiz Objectives 2.7-2.13 tomorrow

quiz review in your notebook
Quiz Review – in your notebook
  • Draw the orbital notation for oxygen.
  • Electrons are represented by ______.
  • Each individual box represents ______.
  • Write the electron configuration notation for oxygen.
  • Circle the valence shell
  • What does the “1” stand for? “s”? “2”?
  • How many valence electrons does it have?
  • Draw its dot diagram.
slide4

What do the dots represent?

  • How many protons does oxygen have?
  • Draw a picture of oxygen that shows the energy levels. Now, turn it into an ion of oxygen.
  • Write the electron configuration for the oxygen ion.
  • Write the symbol with the charge for the oxygen ion.
atoms vs ions
Atoms vs. Ions
  • Venn Diagram
what do group 1 elements have in common
What do Group 1 elements have in common?
  • http://www.youtube.com/watch?v=GVoJZkmAAfA
if you finish early
If you finish early…
  • Work on your Element Facebook page
  • Start on the packet I just left on your desk
  • Study for a quiz you need to retake
  • Do other work silently
a 9 november 2011
A: 9 November 2011
  • Take Out Homework: Element facebook page
  • Objective: You will be able to:
    • show what you know about electron configuration and ions
    • describe and sketch trends in electronegativity and atomic radius
  • Do now: What is one thing that atoms and ions have in common? One difference?
agenda1
Agenda
  • Do now
  • Objectives 2.7-2.13 Quiz
  • Trends on the periodic table
  • Graphing and analyzing trends: Example
  • Finish graphing and analyzing trends

Homework:

Graphing and Analyzing Trends: tomorrow

slide10
Quiz
  • When you finish, silently:
    • Turn it over on your desk.
    • Track your 2.1 to 2.6 quiz that you just got back. Keep out your tracking sheet for stamps!
    • Stack up all your Unit 2 papers (Quizzes, Homework, Labs…) and paperclip them together. Put the Unit 2 Mastery Tracking Sheet on Top!
    • Start the Trends on the Periodic Table worksheet or
    • Work on other work
atomic radius size of the atom
Atomic Radius (size of the atom)

Atomic radius increases

Atomic radius increases

atomic radius
Atomic radius
  • As you move down the periodic table, more energy levels are added
    • This increases the size of the atom
  • As you move left to right across a period, more electrons are added to the SAME energy level
    • There is increasing attraction between more electrons and the positive nucleus
    • Atom size decreases!
electronegativity
Electronegativity
  • The ability of an atom to attract electrons to itself.
    • Elements that want to lose electrons have lowelectroneg.,
    • Elements that want to gain electrons have highelectroneg.
  • Increases going up a group
  • Increasesgoing across a period
      • The smaller the atom, the easier it can attract other electrons
      • Most reactive: F
      • Least reactive: Fr
electronegativity ability of an atom to attract electrons
Electronegativity: ability of an atom to attract electrons

Electronegativity Increases

Electronegativity Increases

trends on the periodic table1
Trends on the Periodic Table
  • With your partner and your periodic table, complete the front, ranking each row in order of increasing atomic radius.
  • Then, complete one table on the back using the special periodic table
  • Then, we’ll do one graph and analysis together.
homework
Homework
  • Trends in atomic radius worksheet (front + 4 graphs, 4 analysis paragraphs): tomorrow
a 11 november 2011
A: 11 November 2011
  • Take Out Homework: Trends on the Periodic Table Graphing
  • Objective: You will be able to:
    • differentiate between ionic and covalent bonding and predict bond type
  • Do now: Write the symbol for the ion formed by calcium.

Explain how you determined your answer.

agenda2
Agenda
  • Do now, collect homework
  • Ionic vs. covalent bonding: examples, modeling and practice problems
  • Exit Ticket

Homework: Week 10/11 Homework #1-12: due Monday

ionic bonding
Ionic Bonding
  • To gain or lose electrons, atoms need to give or take them from other atoms
  • Ionic bond – one atom gives one or more electrons to another atom
    • The oppositely charged ions are attracted to one another (electrostatic attraction)
    • this causes them to become bonded together
  • Ions will transfer electrons (and bond) so that they both get 8 valence e-
ionic compounds
Ionic Compounds
  • How do you know if a compound is ionic?
    • One cation (left/middle of periodic table) + One anion (right of periodic table or a polyatomic anion)
    • Transfer electrons so that both atoms have a full valence shell.
    • Are bonded by electrostatic attraction.
cartooning ionic bonding
Cartooning Ionic Bonding
  • On your Week 10/11 Homework packet…
covalent molecular compounds
Covalent/Molecular Compounds
  • Two or more elements from the right side
  • Two or more nonmetals
  • Share electrons to make full valence shells
homework1
Homework
  • Week 10/11 Homework #1-12: due Monday
a 15 november 2011
A: 15 November 2011
  • Take Out Homework: Week 10/11 #1-11
  • Objective: You will be able to:
    • differentiate between ionic and covalent bonds and write names for ionic compounds.
  • Do now: An atom of calcium meets an atom of sulfur. Describe what happens and what type of bond they make. (2 complete sentences)
agenda3
Agenda
  • Do now/homework check
  • Review ionic vs. covalent bonding
  • Naming ionic compounds: examples and practice problems
  • Hand back and track quizzes, celebrate progress

Homework: Week 10/11 Homework #12-13: Weds.

Quiz Thurs. Obj. 3.1-3.4

videos
Videos!
  • http://www.youtube.com/watch?v=QqjcCvzWwww
  • http://www.youtube.com/watch?v=yjge1WdCFPs&feature=PlayList&p=8D43FC9FA07913EF&playnext=1&playnext_from=PL&index=23
ionic or covalent
Ionic or Covalent?
  • In your notebook, copy each example. Then, write an “I” for ionic or a “C” for covalent
  • NaCl
  • NO2
  • N2Br
  • NaI
  • KNO3
  • CaS
  • H2O
  • Cl2
  • Cu(OH)2
  • CCl4
naming ionic compounds
Naming ionic compounds
  • Write the cation name
    • Name of the element
  • Write the anion name
    • Beginning of element name + -ide
  • Ex 1: LiCl
  • Ex 2: Al2O3
practice naming ionic compounds
Practice Naming Ionic Compounds
  • CaF2
  • BeO
  • Li2O
  • KBr
  • Rb2S
  • Al2O3
  • SrCl2
  • MgO
homework2
Homework

Week 10/11 Homework #12-13: Weds.

Quiz Thurs. Obj. 3.1-3.4

videos1
Videos!
  • http://www.youtube.com/watch?v=QqjcCvzWwww
  • http://www.youtube.com/watch?v=yjge1WdCFPs&feature=PlayList&p=8D43FC9FA07913EF&playnext=1&playnext_from=PL&index=23
ionic or covalent1
Ionic or Covalent?
  • In your notebook, copy each example. Then, write an “I” for ionic or a “C” for covalent
  • NaCl
  • NO2
  • N2Br
  • NaI
  • KNO3
  • CaS
  • H2O
  • Cl2
  • Cu(OH)2
  • CCl4
a 16 november 2011
A: 16 November 2011
  • Take Out Homework: Week 10/11 #12-13
  • Objective: You will be able to
    • write formulas and names for ionic compounds
  • Do now: Ionic or covalent?
    • a. CaCl2
    • b. CO2
    • c. AlF3
agenda4
Agenda
  • Do now/homework check
  • Exit ticket
  • Writing formulas for ionic compounds
  • Practice problems
  • Ionic bonding “speed dating”
  • Formulas for ionic compounds assignment

Homework: Week 10/11 Homework p. 4

Quiz tomorrow (Obj. 3.1-3.4)

exit ticket
Exit Ticket
  • When you finish, paperclip all your unit 2 materials together and raise your hand.
  • I’ll give one person at a time permission to put them in your green folder
writing formulas for ionic compounds
Writing Formulas for Ionic Compounds
  • Write each ion symbol with the charge
  • “Cross” the charges down to the bottom of the opposite element
  • Rewrite symbols with subscripts
    • Do not write + or –, or 1

Examples:

Ex 1: aluminum oxide

Ex 2: lithium sulfide

Ex 3: magnesium oxide

writing formulas from names
Writing formulas from names
  • potassium chloride
  • magnesium bromide
  • rubidium sulfide
  • beryllium fluoride
  • sodium oxide
  • magnesium sulfide
  • aluminum oxide
  • aluminum iodide
ions speed dating
IONS SPEED DATING
  • Fill in your 2 ion cards (6 minutes)
  • Mingle with your classmates to make 10 ionic compounds. Fill in all four columns of the chart.
    • Cation (+) FIRST!
  • Each correctly named compound will earn you 10 points. Each compound over 10 will earn you bonus points!
  • Check to be sure you write the CATION first!
  • If you run out of combinations, trade an ion with a classmate.

Objective: SWBAT model atomic structure and relate valence shell electrons to trends on the periodic table.

before the end of the period
Before the end of the period

Stay in your seat and…

  • Finish Week 10 HW Page 4 and get it stamped!
  • Be sure your mastery tracking sheet from Unit 2 is stamped
  • Organize your Unit 2 materials and paper clip them.
  • Leave them in your green folder. (One person up at a time, please)
  • Work quietly on other work
homework3
Homework
  • Week 10/11 Homework p. 4: tomorrow
  • Quiz on 3.1-3.4: tomorrow
a 17 november 2011
A: 17 November 2011
  • Take Out Homework: Week 10/11 p. 4
  • Objective: You will be able to:
    • show what you know about ions, electronegativity, atomic radius, and ionic vs. covalent bonding.
  • Do now: Find fluorine on the periodic table.
  • Write the symbol of the fluoride ion.
  • Describe the atomic radius and electronegativity of fluorine (big/small, high/low)
  • What could fluorine bond with to make an ionic bond?
agenda5
Agenda
  • Do now
  • Quiz
  • Go over homework

Homework: None!

a 17 november 20111
A: 17 November 2011
  • Take Out Homework: Week 10 page 4
  • Objective: You will be able to:
    • write names and formulas for ionic compounds with transition metals.
  • Do now: Write the formula for the compound formed by the Fe3+ ion and the ion formed by chlorine.
agenda6
Agenda
  • Do now/check homework
  • Ionic compounds with transition metals
    • names and formulas
  • Practice problems

Homework: Week 10/11 Homework p. 5: Fri.

slide55
Quiz
  • 3.1: Predicting and writing symbols for ions
  • 3.2: Trends for electronegativity and atomic radius
  • 3.3: Ionic vs. covalent bonds
  • 3.4: Predicting from a formula what kind of bond will form.
slide56
Quiz
  • When you finish the quiz:
    • organize your Unit 2 materials and paperclip them together
      • you may have already done this
    • Work silently on other work
a 18 november 2011
A: 18 November 2011
  • Objective: You will be able to:
    • write names and formulas for ionic compounds with transition metals and polyatomic ions.
  • Do now:
    • Write the names of the following compounds:
    • a. MgCl2
    • b. K2O
do now answers
Do now answers
  • a. magnesium chloride
  • b. potassium oxide
agenda7
Agenda
  • Do now
  • Ionic compounds with transition metals
  • Ionic compounds with polyatomic ions
  • Practice problems
  • Start Homework pages 5-6
  • Homework: Week 10 Homework pages 5 and 6: due Monday
  • Quiz Tuesday: Writing ionic compound formulas and names
patterns on the periodic table
Patterns on the Periodic Table
  • So we know that…
    • Group 1 elements make 1+ ions
    • Group 2 elements make 2+ ions
    • Group 13 elements make 3+ ions
    • Group 15 elements make 3- ions
    • Group 16 elements make 2- ions
    • Group 17 elements make 1- ions
what about
What about…
  • Groups 3 through 12?!
  • What ions do they make?!
  • If we leave them out, they will be…sad.
ionic compounds with transition metals
Ionic Compounds with Transition Metals
  • Transition Metals: Groups 3-12 (and the metals in groups 13-15)
  • Participate in making ionic compounds as cations (+)
  • Can have different charges
  • Use the Stock System to show which charge the ion has, using a Roman numeral (1-6: I, II, III, IV, V, VI)
for example
For Example
  • The iron ion can have a charge of 2+ or 3+
  • Fe2+ is written as iron (II) (“iron two”)
  • Fe3+ is written as iron (III) (“iron three”)
  • The tin ion can have a charge of 2+ or 4+
  • Sn2+ is written as tin(II)
  • Sn4+is written as tin(IV)
  • Cr, Mn, Fe, Co, Ni, Cu, Au, Hg, Sn, Pb
examples writing formulas
Examples: Writing formulas
  • Ex 1) iron (II) chloride
  • Ex 2) copper (I) oxide
  • Ex 3) tin (IV) sulfide
examples writing names
Examples: Writing names
  • Ex 1) Fe2O3
  • Ex 2) PbI2
  • Ex 3) FeO
practice problems
Practice Problems
  • Write the names or formulas for the following ionic compounds using the stock system
  • CuI2
  • lead (II) sulfide
  • CuBr2
  • iron (II) chloride
  • SnO
  • lead (IV) bromide
  • Sn3P4
  • chromium (III) chloride
slide67

So far, each ion has been made of just one atom that has lost or gained electron(s)

  • Can an ion have more than 1 element?
    • yes!
polyatomic ions
Polyatomic Ions
  • Ions made of more than one element
  • Have an overall charge
  • Ex: NO3−
    • This is a nitrogen atom, bonded to three oxygen atoms
    • The whole thing has a charge of 1-
naming ionic compounds with polyatomic ions
Naming ionic compounds with polyatomic ions
  • Cation name + anion name
  • If the anion is a polyatomic ion, use the name of the polyatomic ion
  • Ex 1) KNO3
  • Ex 2) Ca3(PO4)2
writing names of ionic compounds
Writing names of ionic compounds
  • Given the formula, write the name:
  • NaNO2
  • Ca(NO3)2
  • Rb2SO4
  • AlPO4
  • NH4Cl
  • Al2(CO3)3
  • Mg(OH)2
writing formulas for ionic compounds with polyatomic ions
Writing Formulas for Ionic Compounds with Polyatomic Ions
  • Write the symbols/formulas with charges for the anion and the cation
  • “Cross” the charge down to the bottom of the other side
    • Do not write the + or –
  • Rewrite formula without charges, but with the subscripts only
  • Ex 1) sodium sulfate
  • Ex 2) magnesium nitrate
  • Ex 3) magnesium carbonate
writing formulas
Writing Formulas
  • Write formulas for the following ionic compounds:
  • sodium nitrite
  • sodium nitrate
  • magnesium sulfate
  • aluminum carbonate
  • calcium hydroxide
  • ammonium oxide
  • ammonium chloride
  • magnesium nitrate
slide74

Hand in Writing Names and FormulasPractice Problems sheet

  • Start working on your homework: Week 10/11 Homework pages 5-6
homework4
Homework
  • Week 10 Homework pages 5 and 6
  • Quiz Tuesday: Writing ionic compound formulas and names
agenda8
Agenda
  • Do now
  • Check homework
  • Mixed practice: all kinds of ionic compounds
  • Exit ticket
  • Naming and writing formulas for covalent compounds

Homework: Week 10/11 Homework p. 8: Fri

Quiz on Naming Ionic Compounds: Fri (just objective 3.5)

a 22 november 2011
A: 22 November 2011
  • Take Out Homework: Week 10/11 p. 5-6
  • Objective: You will be able to
    • name and write formulas for ionic compounds
  • Do now: Write the formula for the compound tin (IV) carbonate.
agenda9
Agenda
  • Do now
  • Homework check
  • Naming/writing formulas for ionic compounds: more practice
  • Exit Ticket

Homework: Week 10/11 page 7: tomorrow

Fix pages 5-6: tomorrow

Quiz tomorrow: Naming all kinds of ionic compounds (Objective 3.5)

mixed practice naming ionic compounds
Mixed Practice: Naming Ionic Compounds
  • With your partner, complete this worksheet.
  • Be careful, some have transition metals that need a Roman numeral.
  • Some have polyatomic ions!
  • Then, check p. 5-7 of the HW
  • If you have not yet put unit 2 in your green folder, do it now!
exit ticket1
Exit Ticket
  • Objective 3.5
homework5
Homework
  • Week 10/11 Homework page 7: tomorrow
  • Fix pages 5-6 of homework: tomorrow
  • Writing Names and Formulas for Ionic Compounds Worksheet: tomorrow
  • Quiz tomorrow (3.5: naming/writing formulas for all types of ionic compounds)
a 23 november 2011
A: 23 November 2011
  • Take Out Homework: Writing Names and Formulas for Ionic Compounds Worksheet AND page 7
  • Objective: You will be able to:
    • write names and formulas for covalent compounds, including the first 10 hydrocarbons
  • Do now: Write formulas or names:
    • lithium sulfide
    • ammonium oxide
    • Cu3(PO4)2
    • tin (IV) carbonate
agenda10
Agenda
  • Do now
  • Check homework
  • Review!
  • Quiz on ionic compounds
  • Naming and writing formulas for covalent compounds
  • Practice Problems
  • Exit ticket
  • Hydrocarbons

Homework: Week 10/11 Homework p. 8: Tues.

find the mistake
Find the mistake!
  • On each card, there is a name or a formula.
  • Then, there is a formula or a name below – but it is wrong!!
  • Write one sentence to describe the mistake, then write the correct answer.
  • You have 90 seconds per card!
  • Pass the card back when the timer goes off.
quiz then do this in order
Quiz, then do this, in order:
  • When you finish, turn your quiz over
  • I’ll give you back your 3.1-3.4 Quiz
  • Track Objectives 3.1 and 3.4
  • Leave out your tracking sheet for stamps!
  • Correct your wrong answers on the 3.1 to 3.4 Quiz
  • Make sure your folder is organized and all your Unit 2 papers are in your green folder.
  • Work on something silently
ionic or covalent2
Ionic or Covalent?
  • NaCl
  • NO2
  • N2Br
  • NaI
  • KNO3
  • CaS
  • H2O
  • Cl2
  • Cu(OH)2
  • CCl4
naming covalent compounds
Naming Covalent Compounds
  • P2O5
  • What do the subscripts (little numbers) mean?!
    • Subscripts = The number of atoms of each element!!
  • Use prefixes to communicate how many atoms of each element.
prefix system
Prefix System
  • 1 – mono*
  • 2 – di
  • 3 – tri
  • 4 – tetra
  • 5 – penta
  • *never use mono if the FIRST element listed in a compound has one atom.
  • The SECOND element gets an “-ide” ending
examples
Examples
  • NO2
  • CO2
  • PCl5
  • P2S4
  • Nitrogen trioxide
  • Carbon monoxide
  • Dinitrogentetrahydride
write formulas name these covalent compounds
Write formulas/name these covalent compounds
  • NH3
  • CH4
  • CF4
  • H2O
  • P3O5
  • SBr2
  • P2O3
  • NO
  • Dinitrogen monoxide
  • Carbon tetrachloride
  • Oxygen difluoride
  • Sulfur trioxide
  • Dichlorineoctoxide
  • Sulfur dibromide
  • Dioxygendifluoride
  • Xenon tetrafluoride
c 23 november 2011
C: 23 November 2011

Take Out Homework: Week 10/11 p. 8

Objective: You will be able to:

  • write the names and formulas for the first ten hydrocarbons
  • draw Lewis structures for covalent compounds

Do now: Write the name/formula for:

a. P4S5

b. nitrogen trifluoride

agenda11
Agenda
  • Do now
  • Check homework
  • “Exit” ticket on covalent compounds
  • Names and formulas of hydrocarbons
  • Lewis structures examples
  • Lewis structures problems

Homework: Week 12/13 Homework pages 1-3 (up to VSEPR theory): Mon.

exit ticket2
Exit Ticket
  • When you finish, turn it over
  • Remain silent
  • Track your objectives for the 3.1 to 3.4 Quiz
  • Leave out your tracking sheet for stamps!
hydrocarbons1
Hydrocarbons

Hydrocarbon – A combination of hydrogen atoms and carbon atoms covalently bonded together.

Alkane – A hydrocarbon where there are only single bonds between carbons.

Alkanes are said to be saturated with hydrogen atoms – there is a hydrogen every place you can put one!

methane dot diagram
Methane – Dot diagram

Draw a dot diagram to represent carbon and figure out how many hydrogen atoms can be bonded to it. Draw them.

ethane
Ethane

Draw a dot diagram to represent carbon bonded to another carbonand figure out how many hydrogen atoms there should be.

propane
Propane

Draw a dot diagram to represent 3 carbon atoms bonded together and figure out how many hydrogen atoms there should be.

a 29 november 2011
A: 29 November 2011
  • Take Out Homework: Week 10/11 page 8
  • Objective: You will be able to:
    • draw Lewis Dot Structures for covalent compounds
  • Do now: Write names/formulas for:

a. P4S5

b. nitrogen trifluoride

c. butane

agenda12
Agenda
  • Do now
  • Check homework
  • Track Exit Ticket
  • Hydrocarbons
  • Lewis Structures examples

Homework: Week 12/13 Homework pages 1-2: Weds.

Quiz on Objectives 3.6-3.8: Thurs.

alkane nomenclature
Alkane Nomenclature

Hydrocarbon NameFormula

  • Methane CH4
  • Ethane C2H6
  • Propane C3H8
  • Butane C4H10
  • Pentane C5H12
  • Hexane C6H14
  • Heptane C7H16
  • Octane C8H18
  • Nonane C9H20
  • Decane C10H22
a 30 november 2011
A: 30 November 2011
  • Take Out Homework: Week 12/13 pages 1-2
  • Objective: You will be able to:
    • draw Lewis structures for covalent compounds
  • Do now: Draw the Lewis structure for H2. Circle all the pairs of electrons that are part of a covalent bond.
agenda13
Agenda
  • Do now
  • Check homework
  • Review Lewis Structures
  • Practice Drawing Lewis Structures!
  • Exit Ticket
  • Molecule shapes notes

Homework: Week 12/13 Homework pages 2-3: Thurs.

Quiz on objectives 3.4 through 3.9 on Friday

lewis dot structures
Lewis Dot Structures
  • Show covalent bonding using dots to represent valence electrons!
examples1
Examples

Draw Lewis structures for the following covalent compounds:

  • Cl2
  • H2O
  • NH3
  • CH4
  • CO2
lewis dot structures assignment
Lewis Dot Structures Assignment
  • With your partner, draw a Lewis dot structure for each of the covalent compounds on your white board.
  • Every two or three, raise your hand and have me sign your paper.
  • Each correct Lewis Structure = 10%!!
exit ticket3
Exit Ticket
  • Front page only!!
  • When you finish, check page 2 of your homework, and complete page 3
    • due tomorrow!
a homework
A: Homework
  • Week 12/13 Homework pages 2-3: Thurs.
  • Quiz on objectives 3.4 through 3.9 on Friday
a 2 december 2011
A: 2 December 2011
  • Take Out Homework: Week 12/13 pages 4-5 Lewis structures
  • Objective: You will be able to:

determine the shape and bond angle of a molecule using the VSEPR theory.

  • Do Now: A molecule has four pairs of electrons around the central atom, and none of them are non-bonding pairs. What shape will this molecule be? What is the angle of the bond? Draw a sketch.
agenda14
Agenda
  • Do now
  • Track Exit Ticket
  • Check homework
  • VSEPR Theory Practice Problems
  • Exit Ticket: Molecule shapes
  • Quiz Review Stations

Homework: Week 12/13 HW pages 4-5, draw molecule shape, label and give bond angle

Quiz Tuesday on objectives 3.4-3.9

track exit ticket
Track Exit Ticket
  • Keep it in a safe place – you’ll need it at the end of this period.
homework answers
Homework Answers
  • Lewis structure only
slide114

So, you are now experts on drawing pictures of molecules – Lewis Dot Structures.

  • But, molecules aren’t flat.
  • What DO they look like?!
how are shapes determined
How are shapes determined?
  • VSEPR Theory: Valence Shell Electron Pair Repulsion Theory
    • Valence Shell – electrons in the highest energy level
    • Electron Pair
    • Repulsion – pushing away
  • Pairs of electrons want to be as far from each other as possible in a molecule
  • This causes different molecules to have different shapes!
slide117

Non-bonding electrons: pairs of electrons that are not part of a bond.

  • Central atom: the atom in the middle
slide118

Does the molecule have four electron pairs around the central atom?**

yes

no

How many non-bonding pairs does it have around the central atom?

How many non-bonding pairs does it have around the central atom?

2

0

1

0

1

Tetrahedral

109.5o

Trigonal pyramidal

107o

Non-linear

104o

How many atoms are bonded to the central atom?

Non-linear

117o

2

3

Linear

180o

Trigonal Planar

120o

**Double bonds count as ONE electron pair!!

slide125

On your blank paper (each person must turn in their own work):

  • Draw the Lewis Structure
  • Determine the shape using your flow chart, and write it down
  • Draw the shape and label the bond angle.
  • Make the molecule with your modeling kit.
  • Raise your hand and have me check your work before you move on!
  • Pack up your molecule kit neatly!
  • Complete pages 4-5 on your Week 12/13 Homework
  • Study the hydrocarbons
  • CCl4
  • CS2
  • NF3
  • BBr3
  • H2S
  • SeO2
exit ticket4
Exit Ticket
  • Molecule shapes
    • On the quiz, you’ll get a flow chart without examples
    • It will have the shape names and bond angles.
  • Then, organize your folder!
review stations
Review Stations
  • You’ll have 5 minutes per station.
  • Complete the questions on your answer sheet.
  • Then, check your answers! (No peeking until you’ve tried your hardest!)
  • If you finish a station early, work on the homework
incentive
Incentive
  • For each objective your partner gets mastery on, you’ll receive a bonus point.
what s due
What’s due
  • Your review stations answer sheet will be collected in 30 minutes.
  • If you finish a station early quiz each other on the prefixes or hydrocarbon names!

Homework:

  • Week 12/13 HW pages 4-5, draw molecule shapes
    • label molecule shape and bond angle
  • Quiz Tuesday on objectives 3.4-3.9
homework6
Homework
  • Week 12/13 HW pages 4-5, draw molecule shapes
    • label molecule shape and bond angle
  • Quiz Tuesday on objectives 3.4-3.9
a 6 december 2011
A: 6 December 2011
  • Take Out Homework: Stations Review Activity (I may already have yours.)
  • Objective: You will be able to show what you know about names and formulas of compounds, covalent bonding and molecule shapes.
  • Do now: Track your exit ticket for objectives 3.7, 3.8 and 3.9. Keep your tracking sheet out!
agenda15
Agenda
  • Do now
  • Quiz!

Homework: What objectives do you need extra help on? What work are you missing? Make a plan to make up work!

Check no name work on cabinet on your own time.

slide133
Quiz
  • When you finish, raise your hand.
  • Organize your handed back work into your folder.
  • Extra Credit: Choose one data set and…
    • graph it, labeling axes, give it a title
    • calculate the slope of the line
    • write an analysis paragraph to describe the trend and describe the significance of the slope – due Monday
homework7
Homework
  • Graph + Analysis paragraph
  • What objectives do you need extra help on? What work are you missing? Make a plan to make up work!
  • Are any of the papers without names yours?!
  • Extra help today 3:30-4:30 pm.
2 december 2011
2 December 2011
  • Objective: You will be able to:
    • describe current scientific research on the production of methane on Mars.
  • Do now: Complete the pre-video questions on your handout, #1-5
agenda16
Agenda
  • Do now
  • Video clips and questions
  • Article and questions
  • Discussion

Homework: None!

What objectives and work do you need to do/redo to be successful this quarter?! Email me if you want a copy of a handout over the weekend!

expectations
Expectations
  • Carefully preview the questions for each video clip.
  • Watch each video silently and complete the answers to the questions as you watch.
  • After each video, you’ll have 3 minutes to work with a partner to complete your answers.
  • Make a note of your comments and questions on your handout for discussion after the video.
a 7 december 2011
A: 7 December 2011
  • Objective: You will be able to:
    • calculate the molar mass of a compound and prepare for our field trip!
  • Do now:
  • What is the average atomic mass of oxygen?
  • What is the average atomic mass of chlorine?
  • Where do those masses come from? How are they calculated?
agenda17
Agenda
  • Do now
  • Molar mass notes and examples
  • Practice Problems
  • Field trip expectations
  • Field trip skills and content practice
  • Graphing

Homework: Week 14 Homework p. 1: Thurs., Biogen Pre-Lab: finish graph Thurs.

counting atoms
Counting Atoms
  • Make a list of elements with the number of atoms of each to the right:
  • Co
  • CO
  • CO2
  • C6H12O6
  • Mg(NO3)2
practice problems1
Practice Problems
  • H2
  • H2O
  • MgCl2
  • Al(OH)3
  • Mg3(PO4)2
  • Ca(NO3)2
the mole
The Mole
  • Atoms are so tiny; how do we quantify their masses?
  • The mole: a unit for amount of substance
  • In groups of 6.02 x 1023 atoms or molecules
  • 6.02 x 1023 atoms/molecules = 1 mole
  • 6.02 x 1023 atoms/molecules = Avogadro’s Number
molar mass
Molar Mass
  • Molar mass is the mass in grams of one mole of a pure substance (units: g/mol)
find the molar mass of
Find the molar mass of…
  • Oxygen
  • Phosphorus
  • Sodium
  • Gold
  • Copper
what about the molar mass of compounds
What about the molar mass of compounds?
  • Add up the masses of all the atoms of each element
  • Examples
    • H2
    • CO2
    • Al(OH)3
practice problems2
Practice Problems
  • Calculate the molar mass of:
  • H2
  • H2O
  • MgCl2
  • Al(OH)3
  • Mg3(PO4)2
  • Ca(NO3)2
homework8
Homework
  • Week 14 Homework p. 1
a 21 december 2011
A: 21 December 2011
  • Objective: You will be able to:
    • calculate the percent composition of an element in a compound
  • Do now: (5 minutes, silently)
    • Calculate the molar mass of:
    • carbon tetrachloride
    • sodium carbonate
agenda18
Agenda
  • Do now
  • Do now answers
  • Percent composition examples
  • Practice Problems
  • Homework work time

Homework: Week 14 Homework page 2

percent composition
Percent Composition
  • the percent by mass of each element in a compound

percent composition =

example 1
Example 1
  • Calculate the percent composition of each element in sodium chloride.
example 2
Example 2
  • Calculate the percent composition of each element in aluminum hydroxide.
practice problems3
Practice Problems

Calculate the percent composition by mass of each element in:

  • H2O
  • calcium chloride
  • aluminum nitrate
extension problem
Extension Problem
  • How many grams of aluminum are present in 10.0 grams of aluminum phosphate?
homework9
Homework
  • Week 14 Homework page 2
a 21 december 20111
A: 21 December 2011
  • Objective (copy in your notebook!): You will be able to
    • review molar mass and percent composition
    • determine percent sugar in bubble gum
  • Do now: Calculate the molar mass of magnesium phosphate.
    • Hint: Write the correct formula first!
agenda19
Agenda
  • Do now
  • Review molar mass and percent composition
  • Percent sugar in bubble gum mini-lab
  • Goals ticket for lab report writing
  • Lab report writing time! (106)

Homework: Lab report Thurs. 12/22

review
Review
  • Molar Mass
  • Percent Composition
more practice
More Practice
  • Calculate the molar mass of octane.
  • Calculate the percent composition of each element in octane.
exit ticket5
Exit Ticket
  • Molar mass and percent composition
percent sugar in bubblegum lab
Percent Sugar in Bubblegum Lab
  • Select a chewer.
  • Follow the directions carefully.
  • Unless you are using a balance, remain seated.
  • As soon as you have completed through step 4, fill in the spreadsheet.
  • This work will be collected at the end of 3rd period!
a 20 december 2011
A: 20 December 2011
  • Objective: You will be able to:
    • accomplish a SMART goal for your lab report!
  • Do now:
    • Track your exit ticket and quiz
    • Leave out your tracking sheet for stamps
    • Fill out your goals ticket to identify one SMART goal for today’s lab report work time.
agenda20
Agenda
  • Do now
  • Goals and tracking
  • Computer lab work time (305)

Homework: Lab report due Thurs. 12/22

announcements
Announcements
  • Please use the checklist and attach it to your lab report.
  • You must print out your lab report, staple it, and have it on your desk during the Do Now on Thursday.
a 21 december 20112
A: 21 December 2011
  • Objective: (copy in your notebook!)You will be able to:
    • convert from percent composition to empirical and molecular formulas
    • review Unit 3 objectives
  • Do now: Calculate the molar mass for calcium nitrite.
  • Then, calculate the percent by mass of the nitrogen only.
agenda21
Agenda
  • Do now
  • Questions about molar mass and percent composition?
  • Empirical vs. Molecular Formulas
  • Percent composition to Formulas
  • Practice Problems
  • Review Unit 3

Homework: Lab report due tomorrow (printed, stapled, checklist and ready to go!)

Week 15 Homework

Unit 3 Quiz, 8 Objectives

empirical vs molecular formulas
Empirical vs. Molecular Formulas
  • empirical formula: the lowest whole number ratio of atoms of each element
    • found by doing an experiment
    • Example: CH2
  • molecular formula: the actual number of atoms of each element in a compound
    • Example: C2H4, C3H6
what is the molecular formula of
What is the molecular formula of…
  • What is the molecular formula of CH2 with a molar mass of 56.12 g/mol?
  • What is the molecular formula of CH2O with a molar mass of 60.06 g/mol?
c 21 december 2011
C: 21 December 2011
  • Objective: You will be able to:
    • convert from percent composition to empirical and molecular formulas
  • Do now:
  • What is the empirical formula for C4H12?
  • What is the molecular formula for NO2 with molar mass 92 g/mol?
agenda22
Agenda
  • Do now
  • Questions about molar mass and percent composition?
  • Percent composition to Formulas
  • Practice Problems
  • Review Unit 3

Homework: Lab report due tomorrow (printed, stapled, checklist and ready to go!)

Finish Week 15 Homework: tomorrow

Unit 3 Quiz tomorrow

what if
What if…
  • You have percent composition, and need to calculate the empirical formula?
determining an empirical formula
Determining an Empirical Formula
  • Determine the formula of a compound that is 42.88% carbon and 57.12% oxygen by mass.
  • Determine the formula of a compound that is 41.39% carbon, 3.48% hydrogen and 55.13% oxygen by mass. What is the molecular formula if the molar mass is 87.06 g/mol?
  • In a 10.0 g sample, 0.78 g is carbon and 9.22 g is chlorine. Determine the empirical formula.
practice problems4
Practice Problems
  • What is the empirical formula of a compound that is 25.9% nitrogen and 74.1% oxygen?
  • What is the empirical formula of a compound that is 79.8% carbon and 20.2% hydrogen? What is its molecular formula if the compounds molar mass is 60.16 g/mol?
  • What is the empirical formula of a compound that is 67.6% Hg, 10.8% S and 21.6% O?
unit 3 review
Unit 3 Review!
  • With your partner, complete these review problems.
  • Start with the ones that are hard for you/that you need the most help with!
  • Stay seated and raise your hand if you have questions.
  • Each section completed = 10%
22 december 2011
22 December 2011
  • Take Out Homework: Lab report
  • Objective: You will be able to:
    • show what you know about Unit 3 Objectives
  • Do now: Questions?
agenda23
Agenda
  • Questions?
  • Unit 3 Quiz

Homework: None!

(Though, you may want to study for quiz retakes for after the vacation!)

slide183
Quiz
  • Turn it over when you are done.
  • Neatly organize your unit 3 papers and paperclip them. Keep this pile at your desk until everyone is done with the quiz.
  • Find something to work on silently!!
homework10
Homework
  • Lab report due tomorrow
    • printed, stapled, checklist
  • Week 15 Homework front page: tomorrow
  • Quiz on Unit 3: tomorrow
a 14 december 2011
A: 14 December 2011
  • Objective: You will be able to:
    • determine criteria for an excellent graph
    • create and analyze graphs
  • Do now: On your handouton page 1, list as many criteria of an excellent graph as you can.
agenda24
Agenda
  • Do now
  • Criteria for a Graph
  • Graphing a data set and line of best fit
  • Slope, and analyzing a graph
  • Practice problem

Homework: Be sure data set from Biogen lab is graphed and meets all criteria

Graph analysis paragraph

Plot patients and determine their concentrations of Abeta: Thurs.

criteria for an excellent graph
Criteria for an Excellent Graph
  • Labeled axes with units
  • Title
  • Graphed data points, accurately
  • Consistent scale
  • Clear, neat
criteria for an excellent analysis
Criteria for an Excellent Analysis
  • A description of what data is shown on the graph.
  • General trend of the line: “As ____ _____, then _____ _____.”
  • Range of the data.
  • Discussion of important points and outliers.
assignment
Assignment
  • Complete Data Set 2 on the back of the graph paper, including an analysis paragraph and the interpolation questions (e and f).
    • Turn in just the graph: due Thurs.
  • Work on your Biogen graph
    • determine the concentration of Abeta in each of your four patients using interpolation
    • Make a data table to show this information
    • Biogen graph due Thurs.
homework11
Homework
  • Data Set 2 on page 3
  • Biogen graph, including determining the concentration of Abeta in each of your four patients
  • Due tomorrow
c 14 december 2011
C: 14 December 2011
  • Take Out Homework: Data Set 2 Graph and Paragraph
  • Objective: You will be able to use interpolation and a graph to identify unknowns.
  • Do now: On the green handout, Part I only
    • Silently, on your own.
    • Collected in 7 minutes.
agenda25
Agenda
  • Do now
  • Interpolating from your line of best fit
  • Secret code to the biogen data
  • Lab report rubric
  • Lab report writing time in 305

Homework: Lab conclusion questions due Thursday

Lab report due Thursday, 12/22

data set 2
Data Set 2
  • Interpolation Questions
  • If you finish early, determine the concentration of ABeta for all four of the patients from the Biogen lab
directions by 3 05
Directions: By 3:05…
  • Do questions e and f for data set 2.
  • Plot your four patients on your Biogen graph.
  • Determine which of your patients got the placebo and which got AntiPlaque.
  • Make a table to show the patient number, if the patients got the AntiPlaque, and their concentration of Abeta
  • Lab Conclusion Questions: due Thurs.
c 19 december 2011
C: 19 December 2011
  • Objective: You will be able to
    • meet your goal of writing one or more sections of your lab report.
  • Do now: Pick up a laptop and leave it closed on your desk.
  • Then, complete a goals ticket with a specific goal to complete by the end of the period.
  • Then, track Exit Ticket 3.10 and Quiz 3.4-3.9
agenda26
Agenda
  • Do now
  • Track Objectives
  • Lab report work time

Homework: Lab report due Thurs. 12/22

Quiz on Unit 3 objectives: Thurs.

lab report rubric
Lab Report Rubric
  • Lab report due Thursday 12/22
  • Attach the checklist, please!
this period
This period
  • Use your time wisely.
  • Ask permission to get out of your seat for anything.
  • Work quietly.
  • Ask questions! Have me read sections!
track objectives
Track Objectives
  • Exit Ticket 3.10
  • Quiz 3.4-3.9
  • Leave it out on your desk during work time for stamps!
  • Then, start up your computer and get to work!
goals ticket
Goals Ticket
  • What will you complete by the end of 8th period?
    • You might not want to start working at the beginning
    • For example, you could start with your procedure summary.
  • Worth a 10 point class work grade.
  • Check in with me by the end of the period about your progress.
to 106
To 106!!
  • Quietly, please!
  • Sign in, load up Word, and get started immediately! 
  • Stay seated, work hard
  • Use me as a resource. I’d love to help you improve BEFORE the lap report is due.