Writing Chemical Equations Practice

1.

Multiple Choice

3 mins

1 pt

Which is the correct chemical equation for the following: Solid Zn reacts with silver (I) chloride to produce Zinc (II) chloride and silver metal

Zn + AgCl → ZnCl₂+ Ag

ZnCl₂ + Ag → Zn + AgCl

ZnCl2 + Ag₂ → Zn + AgCl

Zn₂Cl + Ag → Zn + AgCl

2.

Multiple Choice

3 mins

1 pt

Which is the correct chemical equation for the following: Barium Chloride combined with sodium sulfide yields barium sulfide and sodium chloride

BaCl + NaS → BaS+ NaCl

BaCl₂ + Na₂S → BaS+ NaCl

BaS+ NaCl → BaCl + NaS

BaCl₂ + Na₂S → BaS+ NaCl₂

3.

Multiple Choice

1 min

1 pt

What is the correct formula for Sodium Oxide?

NaO

NaO₂

Na₂O

Na₂O₂

4.

Multiple Choice

1 min

1 pt

Name the following ionic compound: BeCl₂

beryllium chlorine

beryllium II chloride

beryllium chloride

beryllium dichloride

5.

Multiple Choice

30 sec

1 pt

Which is NOT a diatomic molecule?

Fluorine

Nitrogen

Boron

Bromine

6.

Multiple Choice

1 min

1 pt

___________________ are the elements or compounds that are formed in a chemical reaction.

Polymers

Bonds

Reactants

Products

7.

Multiple Choice

30 sec

1 pt

Which part of the chemical equation is the product?

C₆H₁₂O₆ + 6O₂ ---> 6CO₂ + 6H₂O

C₆H₁₂O₆ + 6O₂

6CO₂ + 6H₂O

8.

Multiple Choice

1 min

1 pt

Which type of chemical reaction is pictured?

C₆H₁₂O₆ + 6O₂ ---> 6CO₂ + 6H₂O

decomposition

single replacement

synthesis

combustion

9.

Multiple Choice

30 sec

1 pt

The reactants are on the left side of the chemical equation.

True

False

10.

Multiple Choice

1 min

1 pt

A chemical reaction is ___________________.

when substances undergo changes that result in a new substance

a characteristic of a substance that can be observed without changing the substance into another substance

when substances undergo changes that alter their form or physical appearance

11.

Multiple Choice

30 sec

1 pt

Select the pair of words that correctly displays the general FORMAT for writing CHEMICAL EQUATIONS.

products --> reactants

products --> products

reactants --> products

reactants --> reactants

12.

Multiple Choice

1 min

1 pt

How many hydrogen atoms are in this chemical formula:

4 hydrogen atoms

1 hydrogen atom

2 hydrogen atoms

3 hydrogen atoms

13.

Multiple Choice

30 sec

1 pt

Which of the following are products in the reaction below?
Hydrogen gas (H₂) reacts with oxygen gas (O₂) to produce water.

hydrogen gas

water

hydrochloric acid

oxygen gas

14.

Multiple Choice

30 sec

1 pt

Which of the following is a reactant in this equation?
Methane gas (CH₄) reacts with Oxygen gas (O₂) to produce water and carbon dioxide gas (CO₂).

CO₂

CH₄

H₂

CH₂

15.

Multiple Select

30 sec

1 pt

Which of the following is a reactant in the chemical reaction?

Al(OH)₃+ 3NaNO₃---> Al(OH₃)_{3 +} 3NaOH

NaNO₃

Al(OH₃)₃

NaOH

Al(OH)₃

16.

Multiple Choice

2 mins

1 pt

What is the correct formula for Sodium Oxide?

NaO

NaO₂

Na₂O

Na₂O₂

17.

Multiple Choice

2 mins

1 pt

Name the following ionic compound: BeCl₂

beryllium chlorine

beryllium II chloride

beryllium chloride

beryllium dichloride

18.

Multiple Choice

1 min

1 pt

What would be the proper chemical formula for combining Al³⁺ and Cl^- :

AlCl₃

Al₃Cl

AlCl

Al₃Cl₃

19.

Multiple Choice

1 min

1 pt

The proper formula for magnesium hydroxide:

MgOH

Mg₂OH

Mg(OH)₂

Mg₂OH₂

20.

Multiple Choice

1 min

1 pt

The chemical formula for diphosphorous pentoxide is

P₅O₂

2P 5O

5P 2O

P₂O₅

21.

Multiple Choice

1 min

1 pt

Potassium sulfate is written as

K₄SO₂

P₂(SO₄)₃

K₂SO₄

P₄SO₃

22.

Multiple Choice

1 min

1 pt

The formula for copper (II) hydroxide is

Cu(II)OH

Cu(OH)₂

Cu₂OH

CuOH₂

23.

Multiple Choice

1 min

1 pt

The chemical formula for tin (IV) oxide is written

Sn₂O₄

Ti₂O₄

SnO₂

TiO₂

24.

Multiple Choice

1 min

1 pt

Ammonium phosphate is written as

NH₄PO₄

NH₃PO₄

(NH₄)₃PO₄

NH_-3PO₊₁

25.

Multiple Choice

1 min

1 pt

hexasulfur heptoxide is written as

S₆O₇

6S 7O

7S 6O

S₇O₆

26.

Multiple Choice

1 min

1 pt

Which type of reaction is Al + O₂ → Al₂O₃?

composition

decomposition

single replacement

combustion

27.

Multiple Choice

3 mins

1 pt

Which is the correctly balanced equaition?

Cl₂ + 2NaI → 2NaCl + I₂

Cl₂ + 2NaI → NaCl + 2I₂

Cl₂ + NaI → NaCl + I₂

2Cl₂ + NaI → 2NaCl + I₂

28.

Multiple Choice

1 min

1 pt

How many O's are in Al₂(SO₄)₃

4

12

7

24

29.

Multiple Choice

3 mins

1 pt

Which of the following shows the correct way to balance the chemical equation?
Fe + O₂ -> Fe₂O₃

4Fe + 3O₂ -> 2Fe₂O₃

2 Fe + 3O₂ -> Fe₂O₆

4 Fe + O₆ -> 2Fe₂O₃

None of the options are correctly balanced.

30.

Multiple Choice

3 mins

1 pt

Which of the following reactions is balanced?

2CH₄ + O₂ -> CO₂ + H₂O

CH₄ + 2O₂ -> CO₂ + H₂O

CH₄ + 2O₂ -> CO₂ + 2H₂O

None of the chemical equations are balanced.

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