Chapter 1:
Chemistry: The Science of Matter
Practice Test
1.
Photosynthesis is _______________.
a.
exothermic
b.
a physical change
c.
endothermic
d.
a substance
Hint
2.
Which of the following is NOT the formula for an element?
a.
Ho
b.
B
c.
CO
d.
Cu
Hint
3.
This substance decomposes to produce carbon, hydrogen, and oxygen. It may be ______________.
a.
sucrose
b.
table salt
c.
ammonia
d.
bronze
Hint
4.
The density of cork is _______________.
a.
less than 1.00 g/mL
b.
11.34 1.00 g/mL
c.
more than 1.00 g/mL
d.
1.00 g/mL
Hint
5.
The chemical symbol for sodium is derived from the __________ word natrium.
a.
Russian
b.
Latin
c.
Greek
d.
French
Hint
6.
A solution is ______________.
a.
a homogeneous mixture
b.
a compound
c.
an element
d.
a heterogeneous mixture
Hint
7.
What element makes up approximately 65% of your body by mass?
a.
hydrogen
b.
oxygen
c.
calcium
d.
nitrogen
Hint
8.
A volatile substance is one that ____________________ at room temperature.
a.
decomposes readily
b.
condenses
c.
freezes readily
d.
changes to a gas easily
Hint
9.
Sterling silver is _____________.
a.
a compound
b.
an element
c.
an alloy
d.
a heterogeneous mixture
Hint
10.
The capacity to do work is called ________.
a.
energy
b.
density
c.
mass
d.
volume
Hint
11.
The measure of the amount of matter that an object contains is its ______________.
a. volume
b. shape
c. weight
d. mass
Hint
12.
Which of the following is not a compound?
a.
water
b.
butane
c.
salt water
d.
carbon dioxide
Hint
13.
A thinking device that helps you understand and explain macroscopic observations is called a/an ______________.
a.
prediction
b.
scientific model
c.
experiment
d.
observation
Hint
14.
This chemical symbol represents a metallic element that is a liquid at room temperature.
a.
Hg
b.
H
c.
H
2
O
d.
Pb
Hint
15.
When water decomposes into hydrogen and oxygen, the mass _____________.
a.
increases
b.
decreases if the temperature exceeds 100oC.
c.
remains constant
d.
decreases
Hint
16.
What type of physical change would you use to separate the components of an aqueous sugar solution?
a.
electrolysis
b.
freezing
c.
evaporation
d.
sublimation
Hint
17.
An object has a mass of 20.0 g and a volume of 10.0 mL. What is its density?
a.
0.500 g/mL
b.
10.0 mL
c.
2.00 g/mL
d.
20.0 g
Hint
18.
Which of the following is a chemical property of iron?
a.
It conducts electricity.
b.
Its density is 7.87 g/mL.
c.
It rusts.
d.
It is a solid at room temperature.
Hint
19.
The color of a substance is called a __________.
a.
chemical change
b.
physical property
c.
chemical property
d.
physical change
Hint
20.
When water reacts with baking powder, _______ gas is produced.
a.
ammonia
b.
carbon dioxide
c.
nitrogen
d.
helium
Hint
