Chapter 3:
Matter — Properties and Changes
Practice Test
1.
What is the percent by mass of the components of water?
a.
89% H, 11% O
b.
11% H, 89% O
c.
33% H, 67% O
d.
67% H, 33% O
Hint
2.
Fe
2
O
3
is a(n) _____________.
a.
element
b.
homogeneous mixture
c.
heterogeneous mixture
d.
compound
Hint
3.
The statement, “Mass can neither be created nor destroyed” is the ____________.
a.
law of conservation of energy
b.
law of gravity
c.
law of multiple proportions
d.
law of conservation of mass
Hint
4.
Which of the following is not a state of matter?
a.
liquid
b.
gas
c.
density
d.
solid
Hint
5.
A form of matter that has a fixed shape and occupies a fixed volume is a _________.
a.
liquid
b.
plasma
c.
solid
d.
gas
Hint
6.
How would you read the following chemical reaction?
2Cu + O
2
→ 2CuO
a.
copper and oxygen yield copper(II) oxide
b.
copper yields oxygen and copper(II) oxide
c.
oxygen yields copper and copper(II) oxide
d.
copper(II) oxide yields oxygen and copper
Hint
7.
Elements on the left side of the periodic table are _______.
a.
metals
b.
compounds
c.
nonmetals
d.
metalloids
Hint
8.
When one substance changes identity, it exhibits a(n) __________.
a.
extensive property
b.
physical property
c.
intensive property
d.
chemical property
Hint
9.
A solution of solids is a(n)___________.
a.
alloy
b.
pure metal
c.
filtration
d.
heterogeneous mixture
Hint
10.
How can you tell when the following reaction is balanced?
2Cu + O
2
→ 2CuO
a.
mass of reactants = volume of products
b.
mass of the reactants = mass of products
c.
volume of reactants = volume of products
d.
volume of reactants = mass of products
Hint
11.
Matter that has a uniform and unchanging composition is a ___________.
a.
mixture
b.
solid
c.
vapor
d.
substance
Hint
12.
Which of the following is a heterogeneous mixture?
a.
samples of nitrogen and oxygen in the same container
b.
samples of argon and iron in the same container
c.
sugar
d.
sugar in water
Hint
13.
A characteristic that can be observed or measured without changing the sample’s composition is ________________.
a.
chemical property
b.
a crystalline property
c.
a physical property
d.
a gaseous property
Hint
14.
Which of the following is a pure substance?
a.
steam
b.
soda
c.
gun powder
d.
sugar water
Hint
15.
What type of property is observed when milk sours?
a.
an extensive property
b.
an intensive property
c.
a physical property
d.
a chemical property
Hint
16.
Periods are ___________ on the periodic table.
a.
right to left diagonals
b.
horizontal rows
c.
vertical columns
d.
left to right diagonals
Hint
17.
Which of the following is a compound?
a.
neon
b.
crude oil
c.
water
d.
steel
Hint
18.
A technique that uses a porous barrier to separate heterogeneous mixtures is _______.
a.
distillation
b.
crystallization
c.
chromatography
d.
filtration
Hint
19.
A material that cannot be broken down further by chemical means is a(n) ________.
a.
substance
b.
mixture
c.
compound
d.
element
Hint
20.
Seawater is not a substance because __________.
a.
its composition may be different from sample to sample
b.
it is a liquid
c.
it has hydrogen as part of its composition
d.
it is salty
Hint
