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Chemistry Review Part 2

Total questions: 40

Worksheet time: 26mins

Name
Class
Date
1.

What are the REACTANTS in the following equation?

propane + oxygen --> carbon dioxide + water

a)

propane + oxygen

b)

carbon dioxide + water

2.

What are the PRODUCTS in the following equation?

propane + oxygen --> carbon dioxide + water

a)

propane + oxygen

b)

carbon dioxide + water

3.

What type of reaction is this?

a)

Single Replacement

b)

Double Replacement

c)

Combination

d)

Decomposition

4.

Chemical reaction in which energy is given off to the surroundings (exo=exit). The final product will feel warmer

a)

Single Replacement Reaction

b)

Double Replacement Reaction

c)

Endothermic

d)

Exothermic

5.

The substances that exist before the reaction has occurred.

a)

Metals

b)

Reactants

c)

Products

d)

Non-metals

6.

A substance that tastes bitter, is a good conductor, turns red litmus paper blue

a)

Anion

b)

Cation

c)

Acid

d)

Base

7.

The substances that exist after the reaction has occurred

a)

Acid

b)

Base

c)

Reactants

d)

Products

8.

A chemical reaction in which energy is absorbed. The final product will feel cooler

a)

Single Replacement Reaction

b)

Double Replacement Reaction

c)

Endothermic

d)

Exothermic

9.

A scientific law that states that the total mass of the reactants in a chemical reaction is always equal to the total mass of the products

a)

Before and After Law

b)

Always Equal Law

c)

Law of Conservation of Mass

d)

Law of Chemistry

10.

A very rapid reaction of a substance with oxygen to produce oxides

a)

Single Replacement Reaction

b)

Double Replacement Reaction

c)

Synthesis Reaction

d)

Combustion

11.

What type of chemical reaction is this?

a)

Single

b)

Double

c)

Synthesis

d)

Decomposition

12.

When 100g of sulfur reacts with 150g of oxygen, how much sulfur trioxide is produced?

a)

50g

b)

150g

c)

250g

d)

5000000g

13.

How many sodium (Na) atoms are there in:
 Na2CO3Na_2CO_3  

a)

1

b)

2

c)

3

d)

4

14.

How many barium (Ba) atoms are there in:
 3BaCl23BaCl_2  

a)

1

b)

2

c)

3

d)

4

15.

How many aluminum (Al) atoms are there in:
 4Al2(CO3)34Al_2\left(CO_3\right)_3  

a)

2

b)

4

c)

6

d)

8

16.

How many sulfur (S) atoms are there in:
 3FeSO43FeSO_4  

a)

1

b)

2

c)

3

d)

4

17.
Balance this equation:
 2Li + Cl2 -> LiCl
a)
2Li + Cl2 -> 4LiCl2
b)
2Li + Cl2 -> LiCl2
c)
2Li + Cl2 -> 2LiCl
18.
Name the part in red:

H2 + O2 -> H2O
a)
Coefficient
b)
Product
c)
Yield
d)
Subscript
19.
Name the part in red:

_2_H2 + _1_O2 -> _2_H2O
a)
Coefficient
b)
Product
c)
Yield
d)
Subscript
20.
Which number should go in the blank?
_ H2 + O2 -> 2 H2O
a)
1
b)
2
c)
3
d)
0
21.
Is the following equation balanced or unbalanced ? 
Al + O2 --> Al2O3
a)
Balanced
b)
Unbalanced
22.
Is the following equation balanced or unbalanced ? 
N2 +3 H2 --> 2NH3
a)
Balanced
b)
Unbalanced
23.

Name this reaction, Cl2 + 2KI --> I2 + 2KCl

a)

Synthesis

b)

Single Replacement

c)

Double Replacement

d)

Decomposition

24.
Name this reaction, CO2 + H2O --> H2CO3 
a)
Decomposition
b)
Single Replacement
c)
Synthesis
d)
Combustion
25.
This helps to speed up a reaction but does not take part in the chemical reaction. 
a)
coeffiecents
b)
reactants
c)
catalyst
d)
combustion
26.

Chopping up a wood log to make it burn faster would be an example of:

a)

Increasing concentration

b)

Increasing temperature

c)

Increasing surface area

d)

Adding a catalyst

27.

Burning gasoline in a car is an example of what type of reaction?

a)

Synthesis

b)

Decomposition

c)

Combustion

d)

Single Replacement

28.

Lemon juice is an example of:

a)

Acid

b)

Base

29.

Baking Soda is an example of:

a)

Acid

b)

Base

30.

Windex (ammonia) is an example of:

a)

Acid

b)

Base

31.

Vinegar is an example of:

a)

Acid

b)

Base

32.
An explosion is an example of a: 
a)
Chemical Change 
b)
Physical Change
33.
Adding hydrochloric acid (HCl) to a magnesium ribbon strip is an example of what type of change?
a)
Physical Change 
b)
Chemical Change 
c)
No Change 
d)
Mechanical Change
34.
Breaking a toothpick is an example of which type of change?
a)
Chemical Change 
b)
Mechanical Change 
c)
No Change 
d)
Physical Change 
35.

Is cooking pancakes a physical or chemical change?

a)

Chemical

b)

Physical

36.

Is cutting a piece of paper a chemical or physical change?

a)

Chemical

b)

Physical

37.

Is blow drying your hair a chemical or physical change?

a)

Chemical

b)

Physical

38.

Freezing is an example of what kind of change?

a)

Physical

b)

Chemical

39.

What is this WHMIS symbol?

a)

Explosive

b)

Health Hazards

c)

Corrosive

d)

Toxic

40.

What WHMIS symbol is this?

a)

Health Hazard

b)

Flammable

c)

Environmental

d)

Toxic

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