Warm Up: 4 MinutesWrite the

Learning Target

You should be working SILENTLY

Stay in your own seat

1.Log into your computer2.Go to m.socrative.com3.Enter room number: 2305384.Finish all questions

When you are finished, check your grades on PS Connect

DO NOT MOVE THE COMPUTERS

Hint: Periodic

Table and your

naming sheet

Directions

Go to Nearpod.com

Click “JOIN SESSION”

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

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

Calcium Chloride CaCl2

Student Given: Student Answer:

Chemical Formula

must include: 1. Correct Symbol for Element or Polyatomic Ion 2. Correct Subscript CaCl2Exception: If there is one of an element, then a subscript is not needed.

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 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 COMPOUNDS?

Step 3Use the criss-cross rule

to writeformula with the correctsubscripts.

Ca+2 Cl-1

Example Calcium Chloride

CaCl2

How to check your answer?

CaCl2

Example 1:

Rubidium Sulfate

Example 2:

Chromium (III) Oxide

Example 3:

Magnesium Hydroxide

Example 4:

Strontium Phosphate

Guided Practice Teacher:

1. Will show the problem on the board Students:

1. Take 16 seconds to write the components on paper, identifying oxidation numbers.

2. Take 33 seconds to speak with your shoulder partner to compose the formula for the compound

3. Be ready to share the name of the compound when Mr. Ghosh says SWAG

We Do

Beryllium Selenide

BeSe

We Do

Copper (II) Nitrate

Cu(NO3)2

We Do

Silver(I) Phosphide

Ag3P

We Do

Potassium Sulfate

K2 SO4

Practice Makes Perfect

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

85%

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

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 Minutes

Stay in your own seat

1.Log into your computer2.Go to m.socrative.com3.Enter room number: 2305384.Finish all questions

When you are finished, check your grades on PS Connect

DO NOT MOVE THE COMPUTERS

Hint: What rule do we

use for ionic

compounds?

Warm Up: 4 Minutes

Chemical Name Chemical Formula

Magnesium Bromide MgBr2

Chromium(II) Sulfite CrSO3

Sodium Hydroxide NaOH

Trioxygen Disulfide ??????

Hint: Periodic

Table

Write the Learning Target

You should be working SILENTLY

Stay in your own seat

Directions

Go to Nearpod.com

Click “JOIN SESSION”

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

Your PIN:

Agenda

Warm Up- 7 Minutes Cornell Style Notes & Examples- 13

Minutes Guided Practice- 10 Minutes Independent Practice- 12 Minutes Closing – 3 Minutes

Is this compound ionic or covalent?

What about Trioxygen Disulfide???

HOW TO WRITE THE CHEMICAL FORMULA OF A COVALENT COMPOUND?

Step 1 Make sure the name uses prefixes to ensure the compound is covalent.

Example Trioxygen Disulfide

Step 2 Write the correct chemical symbol of the first element

O

Example Trioxygen Disulfide

HOW TO WRITE THE CHEMICAL FORMULA OF A COVALENT COMPOUND?

Step 3 Write the correct chemical symbol of the second element

S

Example Trioxygen Disulfide

HOW TO WRITE THE CHEMICAL FORMULA OF A COVALENT COMPOUND?

Step 4 Use prefixes to write the correct subscripts

O3S2

Example Trioxygen Disulfide

HOW TO WRITE THE CHEMICAL FORMULA OF A COVALENT COMPOUND?

Example 1

Disulfur Hexafluoride

Example 2

Triphosphorus Tetroxide

Example 3

Sulfur Hexabromide

Guided Practice Teacher:

1. Will show the problem on the board Students:

1. Take 16 seconds to write the components on paper

2. Take 33 seconds to speak with your shoulder partner to compose the formula for the compound

3. Be ready to share the name of the compound when Mr. Ghosh says SWAG

Dinitrogen Tetrahydride

We Do

Trisulfur Octabromide

We Do

Sulfur Dibromide

We Do

Cobalt (II) ChlorideWe Do

Practice Makes PerfectBy completing this worksheet

INDEPENDENTLY, it will help us to perfect the skill of writing

chemical formulas of covalent compounds.

85%

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

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?