Atomic Football

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# Atomic Football - PowerPoint PPT Presentation

Atomic Football. RULES. Divide into 5 teams. Choose a color of magnetic football player. Everyone starts on the zero yard line. As you get questions right you will advance to the goal line. Choose who will run the play. Write your answers on the dry erase boards. 5 yards.

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### Atomic Football

RULES
• Divide into 5 teams.
• Choose a color of magnetic football player.
• Everyone starts on the zero yard line.
• As you get questions right you will advance to the goal line.
• Choose who will run the play.
5 yards
• Which is an element and which is a compound?
• SI Si I
• ANSWER: Si and I are elements
• SI is a compound
10 yards
• Mass number
• 59
• Atomic Number
• 27
• Number of p, e-, n
• 27, 27, 32

59

Co

27

5 yards
• How do trace elements differ from non-trace elements?
• ANSWER: needed in very small amounts (mg)
5 yards
• How does a radioactive isotope behave differently from a stable isotope?
• ANSWER: nucleus decays and gives off particles and/or energy to become more stable
5 yards
• Why do atoms join to form compounds?
• ANSWER: to fill outer electron shells
10 points
• How do ions and isotopes differ from the form of the element on the Periodic Table?
• ANSWER: ions have different numbers of e- and isotopes have different numbers of neutrons (and mass numbers)
5 yards
• H – H share electrons. What type of bond would this be?
• A. metallic
• B. hydrogen
• C. covalent
• D. ionic
5 yards
• What do the electrons do in ionic bonds?
• ANSWER: lost or gained to form ions (charged atoms)
10 yards
• Identify the solvent, solute, and solution in this picture:
• Identify the solvent, solute, and solution in this picture: solvent
• solute solution
10 yards
• How does H-bonding cause ice to float?
• ANSWER : H-bonds form between 4oC and 0oC
• H- bonds form between the water molecules which will cause a lattice to open up the water molecules (and become less dense)
• H+ ends attract O- ends of water
10 yards
• How does H-bonding cause surface tension?
• ANSWER: Water creates a “film” on its surface when H-bonding pulls the water molecules in on each other
5 yards
• List the following bonds in order from strongest to weakest:
• Ionic van der Waals
• Covalent Hydrogen
• hydrogen van der Waals
5 yards
• How does a buffer behave in solutions?
• ANSWER: it helps the solution resist drastic changes in pH (absorbs H+ or OH- ions)
5 yards
• 24

Na This is an example of:

11

• Neutral sodium C. isotope of sodium
• Ion of sodium D. neutral iron

10 yards
• What is cohesion? Describe how the molecules line up to other water molecules.
• Cohesion is the attraction of like molecules (such as water to water).
• H+ ends attract to O- ends
10 yards
• Identify the ions and tell if they have gained or lost electrons.
• Ca+2 O F Cl-1
• ANSWER: Ca+2 lost 2 electrons

Cl-1 gained 1 electron

15 yards
• What does the size of the tube affect capillarity? Describe how cohesion and adhesion make it work.
• The smaller the tube, the higher the water rises.
• Cohesion=attraction of water to water creates a column
• Adhesion of water to glass =creeps up sides of the glass
5 yards
• How do acids and bases differ in the types of ions they put into solution (or take out of solution)?
• ANSWER: Acids put H+ ions into solution
• Bases put OH+ ions into solution (or take out H+ ions)
15 yards
• What does it mean to say something is a good solvent? Why is water such a good solvent. How does it dissolve?
• Dissolves a lot
• Water is polar which means it has slightly + and slightly – ends. These surround the opposite ions and pull them into solution.
5 yards
• Why do coastal regions have milder climates than inland regions?
• ANSWER: Water is slow to change its temperature due to H-bonds need to form or break.
10 yards Matching
• Strong acid
• Weak acid
• Neutral
• Weak base
• Strong base
• A. pH 2
• B. pH 7
• C. pH 14
• D. pH 8
• E. pH 6
• Strong acid A
• Weak acid E
• Neutral B
• Weak base D
• Strong base C
• A. pH 2
• B. pH 7
• C. pH 14
• D. pH 8
• E. pH 6
10 yards
• What is a mixture of water and undissolved materials called? Give an example.
• Suspension
10 yards
• MATCH THESE:
• 1. Solvent A. substance being dissolved
• 2. Solute B. substance that does the dissolving
• 3. solution C. combination of the other two
10 yards
• For pH 6 what is the concentration of H+ ions and OH- ions?
• OH- is 10 -8
5 yards
• How different is pH 6 than pH 8 in strength? (how many times and is pH stronger or weaker)
• ANSWER: pH 6 is 100 X’s stronger acid than pH 8
10 yards
• How do the electrons of fluorine fill the shells?
• ANSWER: total of 9 e-
• 2,7
5 yards
• At what pH does the rain have to be or below to qualify as acid precipitation?
10 yards
• Which of these form intramolecular forces (within the molecules) and which form intermolecular forces (between the molecules)?

ionic van der Waals covalent H-bond

ANSWER: ionic and covalent are intramolecular and van der Waals and H-bonds are intermolecular

5 yards
• Is H2SO4 a:
• Molecule or atom
• Formula or symbol
• Molecule and formula
10 yards
• Draw a single bond, a double bond, and a triple bond between two carbons in two different ways.
5 yards
• What do you call a solution that donates a lot of H+ ions?
• A. acid B. base C. salt
10 yards
• Draw NaCl as it is being dissolved by water. Include the correct orientation of water to the ions formed.
5 points
• What are the reactants and what are the products in this chemical reaction?
• C10H8 + 12 O2 ---> 10 CO2 + 4 H2O
5 points
• What are the reactants and what are the products in this chemical reaction?
• C10H8 + 12 O2 ---> 10 CO2 + 4 H2O

REACTANTS PRODUCTS

10 yards
• What are the number of valence e- and ion charges of the7 columns?
• What are the number of valence e- and ion charges of the 7 columns?

+1 +2 share -3 -2 -1

5 yards
• What do the electrons do in covalent bonds?A. lost B. gained C. share
5 yards
• In salt water what is the solute and what is the solvent?ANSWER: salt is solute and solvent is water
10 yards
• Which of the following are mixtures?

Sand and salt water

solution of water and dye CO2

solution of water and dye

(the other two are compounds, chemically joined)

5 yards
• What are the two ions that water dissociates into?
• H+ and OH-
5 yards
• What is the difference between CO and Co?
• ANSWER: CO is a compound and Co is an element.
5 yards
• What subatomic particles make up the atom’s nucleus?
5 yards
• Which elements behave more alike chemically?
• ANSWER: those in same column (such as those with same valence e- numbers, and ion charges)
5 yards
• Which elements are more likely to form ionic bonds?
• ANSWER: far left (+ ions) and far right (not noble gases) that form (- ions)
5 yards
• Contrast polar covalent and nonpolar covalent molecules.
• ANSWER: polar covalent have unequal sharing of electrons
• Nonpolar covalent electrons have equal sharing of electrons
15 yards
• Draw a Bohr model of these three atoms:
• Na Al He
10 yards
• Determine the type of bonds formed if given these atoms formed in the bonds:
• Li2O O2
• Ionic covalent
5 yards
• What two properties of water describe its unusual characteristics such as cohesion and surface tension?
5 yards
• What are the top four elements found in the human body?
5 yards
• What makes the elements different from each other on the periodic table?
• ANSWER: they all have different atomic numbers (number of protons)
• The ones in the same column have the same number of electrons in their outer shells.
5 yards
• What is the same and what is different about the various isotopes of a atom?
• ANSWER: SAME NUMBER OF PROTONS
• DIFFERENT NUMBER OF NEUTRONS
10 yards
• How do you determine the number of valence shell electrons?How do you determine the charge that ion forms?
• ANSWER: electrons fill 2,8,8 rule
• The electrons will gain or lose to fill an outer electron shell
10 yards
• What is the maximum number of bonds these atoms can form with other atoms?
• carbon
• Fluorine
• fluorine can add one bond
• (see next slide)
10 yards
• Van der Waals
• How do they form?
• Strength compared to H-bonding
• H-bonding
• How do they form?
• Strength compared to

Van der Waals

10 yards
• Van der Waals
• How do they form?
• Strength compared to H-bonding
• Formed between polar molecules (dipole-dipole) or between nonpolar molecules (London)
• H-bonding
• How do they form?
• Strength compared to

Van der Waals

Formed between H and F O N

Stronger than van der Waals

5 points
• What are cations?
• What are anions?
5 points
• Why does water have a high heat of fusion and a high heat of vaporization?
• ANSWER: High heat of fusion (long time to form the H-bonds in ice) and High Heat of evaporation (long time to break bonds when water escapes a water vapor)
5 yards
• What is the equation to determine the

pH and [H+] and [OH-]?

• ANSWER: pH = [H+] [OH-] = 10 -14
5 yards
• Write the correct ionic compound formulas:
• GIVEN: Mg2+ Cl-
• K+ I-
• Ca2+ P3-
• Ca3P2
15 yards
• Use capillarity, cohesion, and adhesion to describe what happens to ink on chromatography paper when placed in water.
• Ink dissolved in the water adheres to the sides of the paper pores (adhesion). The ink water forms a column (cohesion) to push up the paper with (+) ends attracted to the (-) ends.
15 yards
• How does the shape of the water droplet change when placed on wax paper and on glass? Explain with cohesion, adhesion, and hydrogen bonds.
• On wax paper the water coheres more to itself and adheres less to the wax paper.
• On the glass the water adheres well to the glass and makes a flatter drop.
5 yards
• H-bonds in ice are:more stable than in liquid water

Less stable than in liquid water

5 yards
• Why do atoms join with other atoms to form compounds?
• ANSWER: To fill outer electron shell
5 yards
• Alkaline is another name for:A. bases C. buffers

B. acids D. salts

5 yards
• NaOH is:
• A. element and atom
• B. element and symbol
• C. molecule and symbol
• D. molecule and formula

5 yards
• Which best describes a water molecule?Polar ionic nonpolar ionic
• Polar covalent nonpolar covalent