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Chemistry Practice Test

Total questions: 95

Worksheet time: 8hrs 2mins

Name
Class
Date
1.

anything that has mass and takes up space

a)

Atom

b)

Molecule

c)

Light

d)

Matter

2.

Type of matter made of two or more elements...

a)

element

b)

mixture

c)

compound

3.

A pure substance that cannot be broken down into any other substance by chemical or physical means. Key word: Pure!

a)

compound

b)

mixture

c)

molecule

d)

element

4.

I am 2 or more elements chemically bonded. Hint: You might give this answer in another question

a)

atom

b)

molecule

c)

compound

d)

mixture

5.

I am two or more atoms chemically bonded. smallest unit of matter that can exist by itself and retain all of a substance's chemical properties.

a)

atom

b)

compound

c)

molecule

d)

mixture

6.
I am the smallest whole particle of matter. 
a)
atom
b)
compound
c)
molecule
d)
mixture
7.
A description of objects that can be measured and observed.
a)
gas
b)
mustangs
c)
physical properties
d)
melting point
8.
A physical property can be observed with your
a)
Eyes
b)
Ears
c)
Tastes
d)
All of the above
9.

What is matter?

a)

Anything that has mass

b)

Anything that occupies space

c)

Both, anything that has mass and takes up space

d)

I don't know

10.

Which of the following is made up of matter?

a)

Music

b)

Light

c)

Love

d)

Air

11.
What is a property? 
a)
A characteristic 
b)
A way of describing matter
12.

Which of the following is not a property?

a)

Color

b)

Shape

c)

Form

d)

Light

13.

Everything we touch is made of ...

a)

Matter

b)

Air

14.

the resistance of a gas or liquid to flow

a)

Viscosity

b)

Watery

c)

energy

d)

Venture

15.
What term describes a solid changing to a gas?
a)
Deposition
b)
Sublimation
c)
Evaporation
d)
Freezing
16.
What is the energy that comes from heat called? 
a)
heat energy
b)
hot energy
c)
thermal energy
d)
burning energy
17.
The change of state from a liquid to a gas is ...
a)
water cycle
b)
evaporation
c)
precipitation
d)
condensation
18.
Any substance that does not have a definite shape and the ability to flow.
a)
solid 
b)
fluid
c)
liquid
19.
Unit of pressure in the SI system
a)
newton-meters
b)
pascals
c)
meters
20.

The upward force that fluids exert on all matter.

a)

Pascal

b)

Fluid

c)

Atmospheric

d)

Buoyant

21.

You can change density of an object by changing the object’s mass.

a)

True

b)

False

22.

Buoyant force is caused by differences in fluid pressure.

a)

True

b)

False

23.
Water drops seen in the cling foil which is covered on hot food. This is an example of__________.
a)
Evaporation
b)
Condensation
24.

Steam rising from wet clothes while ironing them. This is an example of__________.

a)

Evaporation

b)

Condensation

25.

Paint dries up after a while. This is an example of__________.

a)

Condensation

b)

Evaporation

26.
The measure of average kinetic energy of all the particles within an object is called ____________. 
a)
temperature
b)
conduction
c)
radiation
d)
heat 
27.
In which state of matter are molecules moving the slowest?
a)
solid
b)
liquid
c)
gas
d)
all of the above
28.
The physical forms of matter which include solids liquids and gases is called?
a)
States of matter
b)
Change in state
c)
State of change
d)
None of these
29.
Energy is often involved in changes in states of matter?
a)
True
b)
False
30.
What state of matter has the slowest moving particles?
a)
solid
b)
liquid
c)
gas
31.

How close a measurement is to the accepted value is called..

a)

Accuracy

b)

Precision

c)

Significant

d)

Estimate

32.
When a measurement is repeatable and consistent it is said to have...
a)
High precision
b)
Low precision
c)
High accuracy
d)
Low accuracy
33.
This bullseye demonstrates...
a)
High Accuracy & High Precision
b)
High Accuracy & Low Precision
c)
Low Accuracy & High Precision
d)
Low Accuracy & Low Precision
34.
?
a)
High Accuracy & High Precision
b)
High Accuracy & Low Precision
c)
Low Accuracy & High Precision
d)
Low Accuracy & Low Precision
35.
The students measured length during a science experiement, they got 12 cm. But the actual measurement was 14.25 cm. What was the percent error?
a)
15.79%
b)
18.75%
c)
2.25%
d)
18%
36.
The deer population is estimated to be 17,600 in northern Illinois, but an actual count was 21,300. What is the percent error?
a)
21%
b)
17.37%
c)
17.4%
d)
21.02%
37.
Jessie estimates the weight of her cat to be 8 pounds.  The actual weight of the cat was 10 pounds.  Find the percent error.  
a)
15%
b)
20%
c)
25%
d)
30%
38.
When a measurement is repeatable and consistent it is said to have...
a)
High precision
b)
Low precision
c)
High accuracy
d)
Low accuracy
39.

Archimedes' principle states that the buoyant force on a(n) _____ is equal to the weight of the displaced volume of fluid.

a)

object in a fluid

b)

object floating o a fluid

c)

fluid mixing with liquid

d)

substance dissolving into a fluid

40.

An object that sinks into a fluid is _______ the liquid.

a)

less dense than

b)

equally dense as

c)

more dense than

d)

being dissolved in

41.

Unlike a gas, a plasma

a)

is a fluid

b)

has no definite shape

c)

has no definite volume

d)

conducts electric current

42.

suggested explanation to a problem or observation based upon known information

a)

theory

b)

law

c)

hypothesis

d)

experiment

e)

variable

43.

used to test a hypothesis

a)

experiment

b)

law

c)

variable

d)

control

44.

anything that can affect the results of an experiment HINT: changes

a)

control

b)

data

c)

variable

d)

law

45.

Which of the following occurs first in the scientific method?

a)

theory

b)

hypothesis

c)

problem

d)

observation

e)

experiment

46.

observations and measurements made during an experiment

a)

conclusion

b)

law

c)

law

d)

data

47.

part within the experiment that is maintained without change in order to provide a comparison for the part of the experiment containing the variable

a)

fact

b)

data

c)

control

d)

theory

48.

part within the experiment that is maintained without change in order to provide a comparison for the part of the experiment containing the variable

a)

fact

b)

data

c)

control

d)

theory

49.

hypothesis that has been tested and supported by a great amount of evidence over a long period of time.

a)

hypothesis

b)

fact

c)

experiment

d)

theory

50.

statement describing (but not explaining) a natural event or phenomenon

a)

conclusion

b)

law

c)

application

d)

theory

51.

new use to which results are put or new technique developed

a)

application

b)

check off application did not cover in class

c)

control

d)

conclusion

52.

a summary that explains whether or not the data support the hypothesis. HINT: it is also used at the end of an English paper. In __________,

a)

theory

b)

law

c)

hypothesis

d)

conclusion

53.

Which one of the following substances are not a mixtures?

a)

Mayonnnaise

b)

paint

c)

Sodium chloride

d)

air

54.
Sand and gravel may be separated from each other through using..
a)
a filter funnel
b)
a sieve
c)
an evaporating basin
d)
a distillation
55.
Two or more substances mingled together, but not chemically combined are known as a
a)
residue
b)
solution
c)
distillate
d)
mixture
56.
What is the symbol for gold? 
a)
Ag
b)
G
c)
Au
d)
Go
57.
What is the name for Hg? 
a)
Mercurry 
b)
Magnesium 
c)
Helium 
d)
Mercury 
58.
What is the name for Hg? 
a)
Mercurry 
b)
Magnesium 
c)
Helium 
d)
Mercury 
59.
Sulfur's symbol is.... 
a)
su
b)
Su 
c)
s
d)
S
60.
C is the element 
a)
carbon
b)
Calcium 
c)
Carbon 
d)
calcium 
61.
Copper
a)
Cu
b)
Co
c)
Ca
62.
Iron
a)
Ag
b)
Fe
c)
I
d)
Ir
63.

The smallest part of an element that has all the properties of that element is called a/an

a)

molecule

b)

mixture

c)

compound

d)

atom

64.

The study of the composition, structure, and properties of matter; the processes that matter undergoes; and the energy changes that accompany those processes best describes the science of

a)

biology.

b)

physics.

c)

astronomy.

d)

chemistry.

65.

All known elements are organized into a chart known as the

a)

element table.

b)

group table.

c)

periodic table.

d)

metal-nonmetal table.

66.

The vertical columns of the periodic table are called

a)

periods.

b)

rows.

c)

groups.

d)

chemicals.

67.

Which substance represents an element?

a)

CO2 (Carbon Dioxide)

b)

H2O (Water)

c)

O (Oxygen)

d)

NaCl (Sodium Chloride)

68.

Which substance represents a compound?

a)

Water (H2O)

b)

Carbon (C)

c)

Nitrogen (N)

d)

Sodium (Na)

69.

____ 1. Which of the following is considered an exact number (with infinite significance)?

a)

There are 15 students enrolled in the class.

b)

The fence is 43 meters long.

c)

The diameter of a sphere is 3.69 cm.

d)

The depth of water at the shallow end of a pool is 3.0 feet.

e)

The distance between San Diego, California and Okinawa, Japan is 6.539 miles.

70.

____ 2. What is the definition of a Law?

a)

an explanation to explain why a relationship exists in the Scientific Method

b)

an explanation that is not yet supported by a lot of evidence

c)

an observation that must be investigated

d)

an observable relationship between 2 values

e)

None of the above

71.

A well established hypothesis is often called a

a)

theory

b)

observation

c)

Fact

d)

Law

e)

best guess

72.

____ 4. Add: 120.89 + 36 + 49.9 ; the correct answer is:

a)

206.79

b)

206.8

c)

206

d)

207

e)

206.7

73.

Divide 14360 by 203. The quotient expressed to the proper number of significant figures is:

a)

71

b)

0.0141

c)

0.01414

d)

70.74

e)

70.7

74.

Chemistry is defined as the study of the composition and structure of materials and

a)

the categories of matter.

b)

the changes in matter.

c)

the electrical currents in matter.

d)

molecules in living things.

75.

Matter includes all of the following EXCEPT

a)

air.

b)

smoke.

c)

light.

d)

water vapor.

76.

A physical property may be investigated by

a)

melting ice.

b)

allowing silver to tarnish.

c)

letting milk turn sour.

d)

burning wood.

77.

The state of matter in which a material has neither a definite shape nor a definite volume is the

a)

gaseous state

b)

elemental state.

c)

liquid state.

d)

solid state.

78.

The most useful source of chemical information about the elements is a

a)

calculator.

b)

periodic table.

c)

table of metric equivalents.

d)

table of isotopes.

79.

All of the following are steps in the scientific method EXCEPT

a)

observing and recording data.

b)

forming a hypothesis.

c)

discarding data inconsistent with the hypothesis.

d)

developing a model.

80.

A testable statement used for making predictions and carrying out further experiments is a

a)

law.

b)

generalization.

c)

theory.

d)

hypothesis.

81.

A volume of 1 cubic centimeter ( cm3cm^3  ) is equivalent to

a)

1 milliliter.

b)

1 liter.

c)

1 gram.

d)

10 decimeters.

82.

The SI base unit for time is the

a)

day.

b)

minute.

c)

hour.

d)

second.

83.

Idea that matter cannot be created nor destroyed

a)

Rutheford's Rule

b)

Mendeleev's Mandate

c)

Law of Conservation of Matter

d)

The Periodic Law

84.

Person that wrote the Law of Conservation of Matter/Mass

a)

Antione Lavoisier

b)

Democritus

c)

JJ Thomson

d)

Dmitri Mendeleev

85.

The science that seeks to understand what matter does

by studying what atoms and molecules do.

(a)  

86.

Virtually everything around you is

composed of chemicals.

a)

True

b)

False

87.

The (a)   are bound together to form several different types of molecules.

88.

The characteristics of carbon dioxide molecules make carbon dioxide a _____ at room temperature.

a)

solid

b)

liquid

c)

gas

89.

The characteristics of water molecules make water a ________ at room temperature.

a)

solid

b)

liquid

c)

gas

90.
What is a hypothesis?
a)
A hypothesis is the right answer to an experiment.
b)
A hypothesis is the wrong answer to an experiment.
c)
A hypothesis is an educated guess.
d)
I don't know.
91.
What is the first step in the scientific method?
a)
Ask a question
b)
Conclusion
c)
No Horse Play
d)
Observe
92.
Another term for burning is
a)
Fire triangle
b)
Magnesium oxide
c)
Combustion
d)
Bustion
93.

If a law, hypothesis, or ________ is

inconsistent with the findings of an

experiment, it must be revised and new

experiments must be conducted to test the

revisions.

a)

observation

b)

theory

c)

method

d)

independent variable

94.

A neutral nucleus with 2 protons and 2 electrons

a)

Hydrogen

b)

Helium

c)

Lithium

d)

Noble gases

95.

Elements with highly STABLE configuration

a)

Hydrogen

b)

Alkali metals

c)

Noble gases

d)

buoyancy

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