Chemistry: The Central Science, 13th Edition
(Brown, 2025), | All Chapters|newest version
2025/26 A+
___________________________________________________________________
1)In the following list, only __________ is notan example of matter.
B) light
What is the physical state in which matter has no specific shape but does have a
specific volume?
C) liquid
3) The law of constant composition says __________.
that the composition of a compound is always the same
4) The law of constant composition applies to __________.
C) compounds
A combination of sand, salt, and water is an example of a __________
B) heterogeneous mixture
6)A small amount of salt dissolved in water is an example of a __________
A) homogeneous mixture
7) Which one of the following is a pure substance?
, D) elemental copper
8) For which of the following can the composition vary?
C) both homogeneous and heterogeneousmixtures
f matter is uniform throughout and cannot be separated into other substances
by physical means, it is __________
B) either an element or a compound
10)An element cannot __________.
C) be separated into other substances by chemical means
Homogeneous mixtures are also known as __________.
E) solutions
12) Which of the following is an illustration of the law of constant composition?
B) Water is 11% hydrogen and 89% oxygen by mass.
13) Which of the following are chemical processes?
C) 1, 3
Iron has a density of7.9g/cm3. What is the mass of a cube of iron with the
length of one side equal to 55.0 mm?
7.95.5^3 = C) 1.310^3g
Precision refers to __________.
A) how close a measured number is to other measured numbers
16 ) Accuracy refers to __________.
(Brown, 2025), | All Chapters|newest version
2025/26 A+
___________________________________________________________________
1)In the following list, only __________ is notan example of matter.
B) light
What is the physical state in which matter has no specific shape but does have a
specific volume?
C) liquid
3) The law of constant composition says __________.
that the composition of a compound is always the same
4) The law of constant composition applies to __________.
C) compounds
A combination of sand, salt, and water is an example of a __________
B) heterogeneous mixture
6)A small amount of salt dissolved in water is an example of a __________
A) homogeneous mixture
7) Which one of the following is a pure substance?
, D) elemental copper
8) For which of the following can the composition vary?
C) both homogeneous and heterogeneousmixtures
f matter is uniform throughout and cannot be separated into other substances
by physical means, it is __________
B) either an element or a compound
10)An element cannot __________.
C) be separated into other substances by chemical means
Homogeneous mixtures are also known as __________.
E) solutions
12) Which of the following is an illustration of the law of constant composition?
B) Water is 11% hydrogen and 89% oxygen by mass.
13) Which of the following are chemical processes?
C) 1, 3
Iron has a density of7.9g/cm3. What is the mass of a cube of iron with the
length of one side equal to 55.0 mm?
7.95.5^3 = C) 1.310^3g
Precision refers to __________.
A) how close a measured number is to other measured numbers
16 ) Accuracy refers to __________.
