Writing Chemical Equations

FILL OUT PAGE 15 IN YOUR PACKET DURING THIS LESSON

Formulas Review

Match

Match the following

• AlP

• Ba(CN)₂

• Rb₂O

• Ca₃P₂

• BaSO₄

Aluminum phosphide

Barium cyanide

Rubidium oxide

Calcium phosphide

Barium sulfate

• Aluminum phosphide

• Barium cyanide

• Rubidium oxide

• Calcium phosphide

• Barium sulfate

Multiple Choice

Which of the following is the metallic ion in iron (III) oxide?

• Fe⁺³

• Fe⁺²

• O^-2

• O^-1

Multiple Choice

What is the formula for tin (IV) oxide?

• Tn₄O₂

• SnO

• TnO₂

• SnO₂

Multiple Choice

Which of the following is a possible compound from magnesium (+2) and fluorine (-1)?

• MgF

• Mg₂F

• MgF₂

• Mg₃F₂

Multiple Select

Which of the following are variable-charge metals?

• Fe

• Mg

• Au

• Cu

• Ag

Multiple Choice

What is the formula for potassium sulfide?

• KS

• K₂S

• KS₂

• K₃S

Multiple Choice

Which of the following words or phrases best indicates the arrow (→) in a chemical equation?

• "and"

• "plus"

• "reacts with"

• "produces"

Multiple Choice

If a substance is described as a solution, what state symbol should be used?

• (s)

• (l)

• (g)

• (aq)

Multiple Choice

When a reaction description says a substance "decomposes" or "breaks down into", what does this tell you about the reaction?

• Multiple reactants are combining to form one product

• A solid is dissolving in water

• One substance is forming multiple products

• A precipitate is forming

Dropdown

Use the words in the description of the reaction to predict the state of matter

​ KI

Select answer

+​ PbCl₂

Select answer

→ PbI₂ ​

Select answer

+ ​KCl ​

Select answer

Categorize

Options (8)

HBr

H₂

Br₂

Ag

Pb(OH)₂

CO₂

Hg

Na₂SO₄

Sort the following compounds into the state of matter they would form based on the rules discussed on page 2 of your packet

(l)

(s)

(g)

(aq)

Dropdown

Balance the example equation

​

Select answer

KI + ​

Select answer

PbCl₂ → ​

Select answer

PbI₂ + ​

Select answer

KCl

Dropdown

Calcium chloride is a(n) ​

Select answer

, so I need to use the ​

Select answer

to determine the formula

Drag and Drop

Determine the correct ions for each part of the name:

Calcium: ​​

Placeholder

Chloride: ​

Placeholder

Drag these tiles and drop them in the correct blank above

Ca⁺²

Ca⁺¹

Ca⁻¹

Ca⁻²

Cl⁻¹

Cl⁺²

Cl⁺¹

Cl⁻²

Cl⁺³

Cl⁻³

Drag and Drop

Select the subscripts to complete the formula for calcium chloride

​

Placeholder

Placeholder

Drag these tiles and drop them in the correct blank above

Ca₂

Cl

Ca₄

Cl₄

Ca₃

Cl₃

Ca

Cl₂

Multiple Choice

What is the state of calcium chloride according to the reaction description?

• (s)

• (l)

• (g)

• (aq)

Multiple Choice

Oxygen is a(n)

• monoatomic element

• diatomic element

• ionic compound

• covalent compound

Multiple Choice

Which is the best formula for oxygen?

• O (g)

• O₂ (g)

• O₂ (l)

• O (s)

• O (l)

Drag and Drop

What is the formula for calcium oxide?

​

Placeholder

Placeholder

Drag these tiles and drop them in the correct blank above

Ca

O

O₂

Ca₂

O₃

Ca₃

O₄

Ca₄

Multiple Choice

What is the formula for chlorine gas?

• Cl (g)

• Cl₂ (g)

• ClO₂ (g)

• ClO₃ (g)

Dropdown

Balance the reaction from the example:

​

Select answer

CaCl₂ + ​

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O₂ --> ​

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CaO + ​

Select answer

Cl₂

Dropdown

Which of the following are the chemical formulas for the substances in the underlined portion of the description. List them in the order that they appear.

​ ​

Select answer

+ ​​

Select answer

Dropdown

Which of the following are the chemical formulas for the substances in the underlined portion of the description. List them in the order that they appear. ​

Select answer

+ ​​

Select answer

Dropdown

Balance the reaction from the example:

​

Select answer

SF₄ + ​

Select answer

H₂O --> ​

Select answer

SO₂ + ​

Select answer

HF

Dropdown

Which of the following are the chemical formulas for the substances in the underlined portion of the description. List them in the order that they appear.

​ ​​

Select answer

​ + ​​

Select answer

Dropdown

Which of the following are the chemical formulas for the substances in the underlined portion of the description. List them in the order that they appear. ​

​

Select answer

​ + ​​ ​

Select answer

Dropdown

Use your state of matter rules to determine the state of matter of each compound in this example problem.

Pb(NO₃)₂

Select answer

+ NaBr ​

Select answer

--> PbBr₂​

Select answer

+ NaNO₃ ​

Select answer

Dropdown

Balance the problem in the practice problem.

​

Select answer

Pb(NO₃)₂ +​

Select answer

NaBr ​ --> ​

Select answer

PbBr₂​ + ​

Select answer

NaNO₃ ​

Dropdown

Select the formulas for the problem described in the practice problem.

​ ​

Select answer

--> ​

Select answer

+ ​

Select answer

Dropdown

Balance the problem in the practice problem.

​

Select answer

Au₂O₃ --> ​

Select answer

Au + ​

Select answer

O₂

Mrs. Petersen & Mr. Waltner say...

Have a great weekend!
Be careful out there!
MAKE. GOOD. CHOICES.

Multiple Select

What do you need to do this weekend? Select all that apply.

• Have a great weekend

• Be careful out there

• Make good choices

• Write a 5 page paper about your favorite chemical compound.