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Total questions: 10

Worksheet time: 3mins

Name
Class
Date
1.

What is Reactant?

a)

It is the substance at the middle of reaction

b)

It is the substance at the end of reaction

c)

It is the substance at the beginning of reaction

d)

It is the substance at the nowhere of reaction

2.

It is the substance at end of reaction

a)

Product

b)

Reactant

c)

Coefficients

d)

Arrow

3.

It is the number in front of the formula that indicates how many molecules present in that formula

a)

Arrow

b)

Reactant

c)

Product

d)

Coefficients

4.

What does an ARROW imply in the chemical equation.

a)

It means the number of molecules

b)

It means turns into or to yield

c)

It means the products of the formula

d)

It means turns into another substance

5.

It is the number after an element that shows how many molecules in a specific element

a)

Reactant

b)

Product

c)

Subscripts

d)

Coefficients

6.

CH4 + __Cl2 --> CCl4 + __HCl

a)

CH4 + 2Cl2 --> CCl4 + 4HCl

b)

CH4 + 4Cl2 --> CCl4 + 2HCl

c)

CH4 + 4Cl2 --> CCl4 + 4HCl

d)

CH4 + 2Cl2 --> CCl4 + 2HCl

7.

N2 + __H2 --> __NH3

a)

N2 + 3H2 --> 2NH3

b)

N2 + 2H2 --> 3NH3

c)

N2 + 4H2 --> 2NH3

d)

N2 + 2H2 --> 4NH3

8.

__H2 + O2 --> __H2O

a)

4H2 + O2 --> 4H2O

b)

4H2 + O2 --> 2H2O

c)

2H2 + O2 --> 4H2O

d)

2H2 + O2 --> 2H2O

9.

__H2O2 --> __H2O + O2

a)

4H2O2 --> 4H2O + O2

b)

2H2O2 --> 2H2O + O2

c)

2H2O2 --> 4H2O + O2

d)

4H2O2 --> 2H2O + O2

10.

__KClO3 --> __KCl + __O2

a)

2KClO3 --> 2KCl + 3O2

b)

3KClO3 --> 2KCl + 2O2

c)

2KClO3 --> 3KCl + 2O2

d)

4KClO3 --> 2KCl + 3O2