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Write the Learning Target. Warm Up: 4 Minutes. Stay in your own seat. You should be working SILENTLY. Hint: Periodic Table and your naming sheet. DO NOT MOVE THE COMPUTERS. Log into your computer Go to m.socrative.com Enter r oom number: 230538 Finish all questions

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warm up 4 minutes

Write the Learning Target

Warm Up: 4 Minutes

Stay in your own seat

You should be working SILENTLY

Hint: Periodic Table and your naming sheet

DO NOT MOVE THE COMPUTERS

    • Log into your computer
    • Go to m.socrative.com
    • Enter room number: 230538
    • Finish all questions
  • When you are finished, check your grades on PS Connect
directions
Directions

Go to Nearpod.com

Click “JOIN SESSION”

I will give you the code as soon as everyone is ready

agenda
Agenda

Warm Up- 7 Minutes

Cornell Style Notes & Examples- 15 Minutes

Guided Practice-11 Minutes

Independent Practice- 17 Minutes

Closing – 3 Minutes

goal for today
Goal For Today

Calcium Chloride

CaCl2

Student Given:

Student Answer:

chemical formula
Chemical Formula

must include:

1. Correct Symbol for Element or Polyatomic

Ion

2. Correct Subscript

CaCl2

Exception: If there is one of an element, then a

subscript is not needed.

how to write chemical formulas for ionic compounds
HOW TO WRITE CHEMICAL FORMULAS FOR IONIC COMPOUNDS?

Step 1

Write the symbol and oxidation number (charge) for the cation

[oxidation number to be written as a superscript]

Ca+2

Example

Calcium Chloride

how to write chemical formulas for ionic compounds1
HOW TO WRITE CHEMICAL FORMULAS FOR IONIC COMPOUNDS?

Step 2

Write the symbol and oxidation number (charge) for the anion

[oxidation number to be written as a superscript]

Cl-1

Example

Calcium Chloride

how to write chemical formulas for ionic compounds2
HOW TO WRITE CHEMICAL FORMULAS FOR IONIC COMPOUNDS?

Step 3

Use the criss-cross rule to write

formula with the correct

subscripts.

Ca+2 Cl-1

Example

Calcium Chloride

CaCl2

example 1
Example 1:

Rubidium Sulfate

example 2
Example 2:

Chromium (III) Oxide

example 3
Example 3:

Magnesium Hydroxide

example 4
Example 4:

Strontium Phosphate

guided practice
Guided Practice
  • Teacher:

1. Will show the problem on the board

  • Students:
    • Take 16 seconds to write the components on paper, identifying oxidation numbers.
    • Take 33 seconds to speak with your shoulder partner to compose the formula for the compound
    • Be ready to share the name of the compound when Mr. Ghosh says SWAG
we do
We Do
  • Beryllium Selenide

BeSe

we do1
We Do
  • Copper (II) Nitrate

Cu(NO3)2

we do2
We Do
  • Silver(I) Phosphide

Ag3P

we do3
We Do
  • Potassium Sulfate

K2 SO4

practice makes perfect
Practice Makes Perfect

85%

By completing this worksheet INDEPENDENTLY, it will help us to perfect the skill of writing chemical formulas of ionic compounds.

answer key
Answer Key

CaBr2

FeO

KI

CoNO3

Fe2S3

CuCl2

Rb2S

BaSO4

KMnO4

Ni(NO3)2

V3(PO4)2

Mn2(Cr2O7)5

Al(SO3)3

PbS2

HgF

RaS

Be3N2

CsCl

Os(HCO3)3

LiOH

closing
Closing
  • What is the process for composing the chemical formula of an ionic compound?

Tomorrow we will talk about composing the chemical formulas of covalent compounds

warm up 4 minutes1
Warm Up: 4 Minutes

Hint: What rule do we use for ionic compounds?

Stay in your own seat

DO NOT MOVE THE COMPUTERS

    • Log into your computer
    • Go to m.socrative.com
    • Enter room number: 230538
    • Finish all questions
  • When you are finished, check your grades on PS Connect
warm up 4 minutes2

Write the Learning Target

Warm Up: 4 Minutes

Stay in your own seat

You should be working SILENTLY

Hint: Periodic Table

directions1
Directions

Go to Nearpod.com

Click “JOIN SESSION”

I will give you the code as soon as everyone is ready

Your PIN:

agenda1
Agenda

Warm Up- 7 Minutes

Cornell Style Notes & Examples- 13 Minutes

Guided Practice- 10 Minutes

Independent Practice- 12 Minutes

Closing – 3 Minutes

slide28

What about Trioxygen Disulfide???

Is this compound ionic or covalent?

how to write the chemical formula of a covalent compound
HOW TO WRITE THE CHEMICAL FORMULA OF A COVALENT COMPOUND?

Trioxygen Disulfide

Step 1

Make sure the name uses prefixes to ensure the compound is covalent.

Example

slide30

HOW TO WRITE THE CHEMICAL FORMULA OF A COVALENT COMPOUND?

Trioxygen Disulfide

Step 2

Write the correct chemical symbol of the first element

O

Example

how to write the chemical formula of a covalent compound1
HOW TO WRITE THE CHEMICAL FORMULA OF A COVALENT COMPOUND?

Trioxygen Disulfide

Step 3

Write the correct chemical symbol of the second element

S

Example

how to write the chemical formula of a covalent compound2
HOW TO WRITE THE CHEMICAL FORMULA OF A COVALENT COMPOUND?

Trioxygen Disulfide

Step 4

Use prefixes to write the correct subscripts

O3S2

Example

example 11
Example 1

DisulfurHexafluoride

example 21
Example 2

TriphosphorusTetroxide

example 31
Example 3

Sulfur Hexabromide

guided practice1
Guided Practice
  • Teacher:

1. Will show the problem on the board

  • Students:
    • Take 16 seconds to write the components on paper
    • Take 33 seconds to speak with your shoulder partner to compose the formula for the compound
    • Be ready to share the name of the compound when Mr. Ghosh says SWAG
we do4
We Do

DinitrogenTetrahydride

we do5
We Do

TrisulfurOctabromide

slide39

We Do

Sulfur Dibromide

we do6
We Do

Cobalt (II) Chloride

practice makes perfect1
Practice Makes Perfect

85%

By completing this worksheet INDEPENDENTLY, it will help us to perfect the skill of writing chemical formulas of covalent compounds.

answer key1
Answer Key

LiBr

S3P4

KNO3

OCl

FeI3

CuCl

SF6

Ba(MnO4)2

Ga2(Cr2O7)3

CBr2

V2(CO3)3

Br2F9

C7N10

Na2O

NO

Mn2(Cr2O7)5

XeF2

SO2

Ir(HCO3)7

AsC8

closing1
Closing
  • What is the process for composing the chemical formula of an covalent compound?
  • How is this different from the formula of an ionic compound?
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