Wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Chemical Equations

Total questions: 17

Worksheet time: 1hrs 3mins

Name
Class
Date
1.
What is the Law of Conservation of Mass?
a)
It states that no matter can be created or destroyed.
b)
It states that no energy can be created or destroyed.
c)
It states that matter can be created or destroyed.
d)
It states that no sound can be created or destroyed.
2.
Which of the following models best demonstrates a balanced chemical equation?
a)
F
b)
G
c)
H
d)
J
3.

Why must chemical equations be balanced?

a)

So that the equation doesn't explode

b)

The reaction won't happen until it is balanced

c)

Based on the Law of Conservation of Matter, matter cannot be created or destroyed.

d)

Based on the Law of Conservation of Energy, energy cannot be created or destroyed.e

4.

Which are the reactants in the following reaction?

2Mg + O2 ---> 2MgO

a)

Mg and O2

b)

MgO

c)

Mg and MgO

d)

O2 and MgO

5.
Number written below & to the right of a chemical symbol
a)
subscript
b)
reactant
c)
product
d)
coefficient
6.
Number placed in front of a chemical formula
a)
product
b)
coefficient
c)
reactant
d)
subscript
7.
Substances that form as the result of a chemical reaction
a)
products
b)
reactants
c)
coefficients
d)
subscripts
8.
Substances present at the start of a chemical reaction
a)
subscripts
b)
coefficients
c)
reactants
d)
products
9.

Does the image represent the Law of Conservation of

a)

yes

b)

no

10.

Does the image correctly represent the Law of Conservation of Mass?

a)

yes

b)

no

11.

What are the products of the chemical reaction pictured?

a)

CH4 and CO2

b)

CH4 and O2

c)

CO2 and 2H2O

d)

O2 and H2O

12.
Consider the chemical equation CH4 + 2 O2 → CO2 + 2 H2O. In this equation, CH4 is a
a)
product
b)
reactant
c)
displacement
13.
Identify the reactant(s) and product(s) of the reaction.
a)
All three are reactants and none are products.
b)
Hydrogen and water are the reactants, and oxygen is the product.
c)
Water and oxygen are the reactants, and hydrogen is the product.
d)
Hydrogen and oxygen are the reactants, and water is the product.
14.
2H2 + O2 ----> 2H2O What is the product?
a)
------>
b)
2H2O
c)
2H2+ O2
15.
How many TOTAL atoms are on the REACTANT side of this equation?
CH4 + 2O2 → CO2 + 2H2O 
a)
5
b)
7
c)
9
d)
11
16.
Which of the following reactions is balanced?
a)
2CH4 + O2 -> CO2 + H2O
b)
CH4 + 2O2 -> CO2 + H2O
c)
CH4 + 2O2 -> CO2 + 2H2O
d)
None of the chemical equations are balanced.
17.

Choose the most interesting element from the class presentations, and share one fact about that element. (use your notes in your science notebook!)

4 lines

Similar Resources on Wayground

Science- Chapter 1 Lesson 3

16 questions

Science- Chapter 1 Lesson 3

quiz

Worksheet

•

4th - 7th Grade

Properties of Water: Example ID

17 questions

Properties of Water: Example ID

quiz

Worksheet

•

7th - 8th Grade

Chemical Equations Review

20 questions

Chemical Equations Review

quiz

Worksheet

•

7th - 8th Grade

Atomic Theory and Atoms

20 questions

Atomic Theory and Atoms

quiz

Worksheet

•

6th - 8th Grade

Chemical Bonds

19 questions

Chemical Bonds

quiz

Worksheet

•

7th - 8th Grade

Protons

13 questions

Protons

quiz

Worksheet

•

6th - 8th Grade

Grade 7 Quiz: Waste Management

15 questions

Grade 7 Quiz: Waste Management

quiz

Worksheet

•

7th Grade

ANĐEHIT – AXIT CACBOXYLIC

18 questions

ANĐEHIT – AXIT CACBOXYLIC

quiz

Worksheet

•

1st Grade - University