Chemistry

1
Chemistry

• Matter
• Review

2
Gold melts at 1064o C. Melting point is a _____.

• Chemical change
• Chemical property
• Physical Change
• Physical Property

3
The structure of matter refers to its _____.

• behavior
• composition
• measurements
• reactions

4
Coal burns in a furnace, producing light and
heat. This reaction is _____.

• a physical change
• endothermic
• energetic
• exothermic

5
Matter that is large enough to be seen it _____.

• macroscopic
• massive
• a scientific model
• submicroscopic

6
A 1-g sample of the compound hydrogen chloride
was analyzed and found to be 2.74 percent
hydrogen and 97.3 percent chlorine. What
percentage of hydrogen is present in a 2-g sample
of hydrogen chloride?

• 1.37
• 2.74
• 5.48
• 97.3

7
The density of a material depends on _______.

• its mass only
• its volume only
• its mass and volume
• Its weight

8
A 26.0 g sample of a liquid was found to have a
volume of 13.0 ml. What is the density of the
liquid?

• 0.500 g/mL
• 2.00 g/mL
• 39.0 g/mL
• 338 g/mL

9
Water and hydrogen peroxide are both composed of
atoms or hydrogen and oxygen. The differences
lie in the ____ arrangement of the atoms.

• behavioral
• composed
• macroscopic
• submicroscopic

10
When ice melts and becomes liquid water, it has
undergone a _____.

• Chemical change
• Chemical property
• Physical change
• Physical property

11
Which of the following is not an example of a
model?

• A floor lamp
• A globe
• A road map
• A wind tunnel

12
Liquid chlorine bleach breaks down into other
substances when exposed to light. The
instability of bleach is a ____.

• Chemical change
• Chemical property
• Physical property
• Physical change

13
Sugar, which is a substance, can be broken down
into carbon, oxygen, and hydrogen. Sugar is a(n)
_______.

• compound
• element
• mixture
• solution

14
A soft drink is an example of a(n) ______.

• compound
• element
• heterogeneous mixture
• homogeneous mixture

15
If 14 atoms of carbon react with 28 atoms of
oxygen to form carbon dioxide, how many atoms are
contained in the carbon dioxide that is produced?

• 14
• 21
• 28
• 42

16
An example of chemical change is _____.

• melting
• electrical conductivity
• burning
• density

17
A physical property of zinc metal is _____.

• its color
• whether it burns
• how it reacts with nitrogen gas
• Whether it changes when placed into acid

18
Which of the following materials cannot be broken
down into a simpler form?

• compound
• solution
• mixture
• element

19
In a list of the densities of common materials,
the one density that might not seem reasonable is
_____.

• 185,326 g/mL
• 0.45 g/mL
• 2.54 g/mL
• 1.000 g/mL

20
The best way to understand the submicroscopic
world is with

• Powerful microscopes
• Very accurate measuring devices
• Physical properties
• Models

21
Which of the following has the greatest density?

• a rock
• oxygen
• oil
• ice

22
An example of a pure substance in everyday life
is _____.

• pond Water
• sugar
• p cola drink
• concrete

23
In ocean water, salt is a(n) _____.

• alloy
• solute
• solution
• solvent

24
The alloy brass is made from copper and zinc.
Brass is a(n) _____.

• compound
• element
• mixture
• substance

25
Classification based on measurements is said to
be ______.

• composed
• observed
• qualitative
• quantitative

26
Which of the following liquids is most volatile?

• alcohol
• motor oil
• cooking oil
• water

27
Matter on the atomic level is ______.

• macroscopic
• massive
• microscopic
• submicroscopic

28
The ______ says that matter can be neither
created nor destroyed in a chemical change.

• Law of Definite Proportions
• Law of Conservation of Matter
• Law of Gravity
• Law of Multiple Proportions

29
Solutions in which water is the solvent is called
______.

• An alloy
• A solute
• An aqueous solution
• A solvent

30
A chemical combination of two or more elements
joined together in a fixed proportion is called
a(n) _____.

• compound
• element
• reaction
• gas

31
A ________ observation is an observation that
makes use of measurement.

• meter
• qualitative
• quantitative
• random

32
The ______ is the material that is dissolved in a
solution.

• alloy
• aqueous solution
• solute
• solvent

33
The behavior of matter and its characteristics is
called its _____.

• composition
• energy
• chemistry
• properties

34
Any chemical reaction that gives off energy is
_____.

• endothermic
• exothermic
• qualitative
• quantitative

35
A solid solution usually consisting of two or
more metals is a(n) ______.

• aqueous solution
• alloy
• mixture
• volatile solution

36
A(n) _______ change is the type of change in
which the identity of substances does not change.

• exothermic
• endothermic
• chemical
• physical

37
_________ is anything that takes up space and has
mass.

• Matter
• Mass
• Energy
• Momentum

38
___________ can be observed only when there is a
change in composition of a substance.

• A physical change
• A mixture
• A chemical change
• mass

39
_______ is the measure of the amount of matter
that an object contains.

• Volume
• Mass
• Density
• Length

40
________ is the capacity to do work.

• Mass
• Energy
• Momentum
• Force

41
Corks are used on fishing lines because they
float. What can you say about the density of
cork?

• The density of cork is greater than the density
  of water.
• The density of cork is the same as the density of
  water.
• The density of cork is less than the density of
  water.
• You can not conclude anything about the density
  of cork.