Chapter 3:
Matter — Properties and Changes
Practice Test
1.
A characteristic that can be observed or measured without changing the sample’s composition is ________________.
a.
chemical property
b.
a gaseous property
c.
a physical property
d.
a crystalline property
Hint
2.
Which of the following is a heterogeneous mixture?
a.
sugar in water
b.
sugar
c.
samples of argon and iron in the same container
d.
samples of nitrogen and oxygen in the same container
Hint
3.
Periods are ___________ on the periodic table.
a.
horizontal rows
b.
left to right diagonals
c.
vertical columns
d.
right to left diagonals
Hint
4.
Seawater is not a substance because __________.
a.
its composition may be different from sample to sample
b.
it is salty
c.
it has hydrogen as part of its composition
d.
it is a liquid
Hint
5.
A material that cannot be broken down further by chemical means is a(n) ________.
a.
substance
b.
compound
c.
element
d.
mixture
Hint
6.
A technique that uses the differences in boiling point to separate homogeneous mixtures is _________.
a.
crystallization
b.
distillation
c.
chromatography
d.
filtration
Hint
7.
How would you read the following chemical reaction?
2Cu + O
2
→ 2CuO
a.
copper(II) oxide yields oxygen and copper
b.
copper and oxygen yield copper(II) oxide
c.
copper yields oxygen and copper(II) oxide
d.
oxygen yields copper and copper(II) oxide
Hint
8.
Which of the following is a pure substance?
a.
steam
b.
soda
c.
gun powder
d.
sugar water
Hint
9.
Which of the following is not a chemical property?
a.
placing iron in hydrochloric acid and producing hydrogen gas
b.
rusting of iron
c.
freezing of water
d.
burning a piece of wood
Hint
10.
What type of property is observed when milk sours?
a.
a physical property
b.
an extensive property
c.
a chemical property
d.
an intensive property
Hint
11.
A solution of solids is a(n)___________.
a.
heterogeneous mixture
b.
pure metal
c.
filtration
d.
alloy
Hint
12.
A technique that uses a porous barrier to separate heterogeneous mixtures is _______.
a.
distillation
b.
crystallization
c.
chromatography
d.
filtration
Hint
13.
Properties that are dependent on the amount of substance present are ________.
a.
external properties
b.
intensive properties
c.
extensive properties
d.
chemical properties
Hint
14.
Matter that has a uniform and unchanging composition is a ___________.
a.
solid
b.
substance
c.
mixture
d.
vapor
Hint
15.
Which of the following is a compound?
a.
steel
b.
water
c.
crude oil
d.
neon
Hint
16.
Elements on the left side of the periodic table are _______.
a.
metalloids
b.
compounds
c.
nonmetals
d.
metals
Hint
17.
A vapor is a _________.
a.
condensed state
b.
solid
c.
gas
d.
liquid
Hint
18.
In the following chemical reaction, how do you classify hydrogen and oxygen?
2H
2
+ O
2
2H
2
O
a.
reactants
b.
chemical properties
c.
products
d.
physical changes
Hint
19.
When one substance changes identity, it exhibits a(n) __________.
a.
physical property
b.
extensive property
c.
intensive property
d.
chemical property
Hint
20.
A form of matter that has a fixed shape and occupies a fixed volume is a _________.
a.
solid
b.
plasma
c.
liquid
d.
gas
Hint
