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Chemical Reactions

Total questions: 12

Worksheet time: 12mins

Name
Class
Date
1.

Which of the Following is a Chemical change?

a)

Melting

b)

Rusting

c)

Boiling

2.

Which of the Following is a Physical change?

a)

Rusting

b)

Melting

c)

Flame

3.

What # balances the equation?
4 H2O + 7 CO2 --> ___ C7H8 + 9 O2

a)

1

b)

5

c)

2

d)

8

4.

What Equation Is balanced by the #2?

a)

3 ZnS + 2AlP --> 1 Zn3P2 + __Al2S3

b)

___ZnS + 2 AlP --> 1 Zn3P2 + 1 Al2S3

c)

3 ZnS + 2 AlP -->___ Zn3P2 + 1 Al2S3

d)

3 ZnS + ___ AlP --> 1 Zn3P2 + 1 Al2S3

5.

What Type of Reaction Is this?

AB -> A + B

a)

Double Replacment

b)

Single Replacement

c)

Synthesis

d)

Decompisition

6.

Name the reaction: AB + CD -> AD + CB

a)

Single Replacment

b)

Combustion

c)

Double Replacment

d)

Synthesis

7.

Choose all Reactions.

a)

Synthesis

b)

Double Replacement

c)

Single Replacement

d)

Decomposition

e)

Combustion

8.

How many grams of CO2 are produced from the combustion of 1.72 moles of butane(C4H10)?


2 C4H10 + 13 O2 = 8 CO2 + 10 H2O

a)

303

b)

4021

c)

343

d)

430

9.

If 103.0 g of potassium chlorate are decomposed to form 62. 7 g of potassium chloride and oxygen gas according to the equation 2KClO3  2KCl + 3O2, how many grams of oxygen are formed?

a)

50.4

b)

40.3

c)

100.0

d)

103.0

10.

Whats Missing?


2Na + 2H2O  X + 2NaOH

a)

O2

b)

Mg

c)

H2

d)

Na

11.

A process that leads to the chemical transformation of one set of chemical substances to another.

a)

What is a Solution?

b)

What is a Taco?

c)

What is a Reaction?

d)

What is a Bond?

12.

What is Mr. White's Favorite Food?

a)

Lo-Mien noodle

b)

Taco

c)

Pancake

d)

Flat-Bread Pizza

e)

Bratwurst