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Chemistry: How Do Atoms Rearrange?

Total questions: 20

Worksheet time: 2hrs 40mins

Name
Class
Date
1.

Select the vocabulary word based on the given definition: a chemical reaction, commonly called burning

a)

combustion

b)

chemical equation

c)

chemical reaction

d)

molecule

2.

Select the vocabulary word based on the given definition: a representation of a chemical reaction using chemical formulas

a)

combustion

b)

chemical equation

c)

chemical reaction

d)

molecule

3.

Select the vocabulary word based on the given definition: a process during which the atoms of starting substances (reactants) rearrange to form new substances (products)

a)

combustion

b)

chemical equation

c)

chemical reaction

d)

molecule

4.

Select the vocabulary word based on the given definition: a particle made of two or more atoms that are held together with strong (covalent) bonds

a)

combustion

b)

chemical equation

c)

chemical reaction

d)

molecule

5.

Select the vocabulary word based on the given definition: an insoluble solid product of a reaction

a)

precipitate

b)

reactants

c)

products

d)

molecule

6.

Select the vocabulary word based on the given definition: a starting substance in a chemical reaction

a)

precipitate

b)

reactant

c)

product

d)

molecule

7.

Select the vocabulary word based on the given definition: a substance produced in a chemical reaction

a)

precipitate

b)

reactant

c)

product

d)

molecule

8.
How many atoms of carbon (C) are in C6H12O6?
a)
3
b)
6
c)
12
d)
24
9.
How many Sodium (Na) are in 6NaCl?
a)
1
b)
12
c)
6
10.
How many Aluminum are in Al2O3?
a)
3
b)
2
c)
5
11.
How many Hydrogen are in 4H2O?
a)
6
b)
8
c)
2
d)
4
12.
Which of the following shows the correct way to balance the chemical equation?
Fe + O2 -> Fe2O3
a)
4Fe + 3O2 -> 2Fe2O3
b)
2 Fe + 3O2 -> Fe2O6
c)
4 Fe + O6 -> 2Fe2O3
d)
None of the options are correctly balanced.
13.
What does the Law of Conservation of Mass state?
a)
Matter cannot be gained or lost in a chemical reaction.
b)
Matter can only be lost in a chemical reaction.
c)
Matter can only be gained in a chemical reaction.
d)
Matter can be gained and lost in a chemical reaction. 
14.

What are the products of combustion?

a)

Hydrogen + oxygen

b)

Carbon dioxide + water

c)

Carbon dioxide + hydrogen

d)

Carbon + water

15.

Given the chemical equation 4Fe + 3O2 -> 2Fe2O3 what are the PRODUCT(S) of the reaction?

a)

Fe

b)

Fe2O3

c)

Fe + O2

d)

O2

16.

Given the chemical equation 4Fe + 3O2 -> 2Fe2O3 what are the REACTANT(S) of the reaction?

a)

Fe

b)

Fe2O3

c)

Fe + O2

d)

O2

17.

What type of chemical reaction does the following represent?

A + B --> AB

a)

Synthesis

b)

Single Replacement

c)

Double Replacement

d)

Decomposition

18.

What type of chemical reaction does the following represent?

AB --> A + B

a)

Synthesis

b)

Single Replacement

c)

Double Replacement

d)

Decomposition

19.

What type of chemical reaction does the following represent?

AB + C --> AC + B

a)

Synthesis

b)

Single Replacement

c)

Double Replacement

d)

Decomposition

20.

What type of chemical reaction does the following represent?

AB + CD --> AC + BD

a)

Synthesis

b)

Single Replacement

c)

Double Replacement

d)

Decomposition