Chapter 1:
Chemistry: The Science of Matter
Practice Test
1.
Sterling silver is _____________.
a.
an alloy
b.
a compound
c.
an element
d.
a heterogeneous mixture
Hint
2.
An object has a mass of 20.0 g and a volume of 10.0 mL. What is its density?
a.
2.00 g/mL
b.
20.0 g
c.
0.500 g/mL
d.
10.0 mL
Hint
3.
The measure of the amount of matter that an object contains is its ______________.
a. volume
b. shape
c. mass
d. weight
Hint
4.
What element makes up approximately 65% of your body by mass?
a.
oxygen
b.
calcium
c.
nitrogen
d.
hydrogen
Hint
5.
Crushing a substance ____________.
a.
increases its density
b.
decreases its melting point
c.
is a chemical change
d.
is a physical change
Hint
6.
An exothermic reaction is one that _______________.
a.
gives off energy
b.
absorbs energy
c.
causes a color change
d.
produces a solid
Hint
7.
Which of the following is NOT the formula for an element?
a.
B
b.
Cu
c.
Ho
d.
CO
Hint
8.
The capacity to do work is called ________.
a.
energy
b.
mass
c.
volume
d.
density
Hint
9.
The color of a substance is called a __________.
a.
physical change
b.
chemical property
c.
chemical change
d.
physical property
Hint
10.
A solution is ______________.
a.
a compound
b.
a homogeneous mixture
c.
an element
d.
a heterogeneous mixture
Hint
11.
This chemical symbol represents a metallic element that is a liquid at room temperature.
a.
Hg
b.
Pb
c.
H
d.
H
2
O
Hint
12.
When water decomposes into hydrogen and oxygen, the mass _____________.
a.
decreases
b.
decreases if the temperature exceeds 100oC.
c.
remains constant
d.
increases
Hint
13.
When water reacts with baking powder, _______ gas is produced.
a.
helium
b.
carbon dioxide
c.
ammonia
d.
nitrogen
Hint
14.
A thinking device that helps you understand and explain macroscopic observations is called a/an ______________.
a.
scientific model
b.
prediction
c.
observation
d.
experiment
Hint
15.
This substance decomposes to produce carbon, hydrogen, and oxygen. It may be ______________.
a.
sucrose
b.
ammonia
c.
bronze
d.
table salt
Hint
16.
Which of the following is a chemical element?
a.
sucrose
b.
gold
c.
water
d.
sand
Hint
17.
The density of cork is _______________.
a.
less than 1.00 g/mL
b.
11.34 1.00 g/mL
c.
1.00 g/mL
d.
more than 1.00 g/mL
Hint
18.
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
19.
Photosynthesis is _______________.
a.
a substance
b.
endothermic
c.
exothermic
d.
a physical change
Hint
20.
A substance being dissolved is called ____________.
a.
a solution
b.
a solute
c.
an aqueous solvent
d.
a solvent
Hint
