Free Printable Identifying Reactants and Products

1.

What are the products of the chemical reaction pictured?

a)

CH₄ and CO₂

b)

CH₄ and O₂

c)

CO₂ and H₂O

d)

O₂ and H₂O

2.

The substances listed on the left side of a chemical equation are the

a)

Products

b)

Coefficients

c)

Precipitates

d)

Reactants

3.

What tells you how many molecules are present?

a)

reactant

b)

product

c)

subscript

d)

coefficient

4.

What is the left part of a chemical equation called?
H_{2 +}O → H₂O

a)

Reactants

b)

Products

c)

Yields

d)

Chemical Equation

5.

How many products are in A + B ---> C

a)

1

b)

2

c)

3

d)

4

6.

How many reactants are in A + B ---> C ?

a)

1

b)

2

c)

3

d)

4

7.

Consider the chemical equation CH₄ + 2 O₂ → CO₂ + 2 H₂O. In this equation, CH₄ is a

a)

product

b)

reactant

c)

displacement

8.

2H₂ + O₂ ----> 2H₂O What is the product?

a)

------>

b)

2H₂O

c)

2H₂+ O₂

9.

Which are the reactants in the following reaction?

2Mg + O₂ ---> 2MgO

a)

2MgO

b)

2Mg +O

c)

2Mg + O₂

10.

How many reactants are there: AB + CD --> AD + CB

a)

1

b)

4

c)

2

11.

How many reactants are there: ABC --> AC + B

a)

3

b)

1

c)

2

12.

How many products are in A + B ---> 2C

a)

1

b)

2

c)

3

d)

4

13.

What is law of conservation of mass ?

a)

Mass of reactants = mass of products

b)

mass of reactants > mass of the products

c)

mass of the reactants < mass of the products

d)

mass of reactants > 2 mass of the reactants

14.

This appears on the left side of a chemical formula, and represents how many molecules there are.

a)

An Atom

b)

The Subscript

c)

A Molecule

d)

The Coefficient

15.

If there are 4 H atoms on the reactant side, how many H atoms will be on the product side?

a)

2

b)

4

c)

6

d)

You need more information to answer this question

16.

How many oxygen atoms are in this chemical formula?

a)

6 oxygen atoms

b)

2 oxygen atoms

c)

3 oxygen atoms

d)

4 oxygen atoms

17.

The elements / compounds on the LEFT side of the yield arrow are known as

a)

Products

b)

Metals

c)

Reactants

d)

Chemicals

18.

The elements / compounds on the RIGHT side of the yield arrow are known as

a)

Reactants

b)

Gases

c)

Chemicals

d)

Products

19.

What are the reactants of this equation?

a)

$N_2+H_2$

b)

$2NH_3$

20.

$2Al^{ }\ +\left(SO_4^{ }\right)\ \rightarrow\ Al_2\left(SO_4\right)_3$

What are the products of this equation?

a)

$2Al^{ }\ +\left(SO_4^{ }\right)$

b)

$Al_2\left(SO_4\right)_3$

21.

What are the reactants of this equation?

a)

$CH_4\ +\ 2O_2$

b)

$CO_2+\ 2H_2O$

22.

What are the PRODUCTS of this equation?

a)

$CH_4\ +\ 2O_2$

b)

$CO_2+\ 2H_2O$

23.

$2Al^{ }\ +\left(SO_4^{ }\right)\ \rightarrow\ Al_2\left(SO_4\right)_3$

What are the REACTANTS of this equation?

a)

$2Al^{ }\ +\left(SO_4^{ }\right)$

b)

$Al_2\left(SO_4\right)_3$

Identifying Reactants and Products

Total questions: 23

Worksheet time: 17mins

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