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General Chemistry

Total questions: 112

Worksheet time: 1hrs 15mins

Name
Class
Date
1.
A scientist is working in the lab, with compounds containing carbon. She is most likely working in the field of
a)
Organic
b)
Inorganic
c)
Analytical
d)
Physical
2.
The smallest unit of matter that retains the properties of that matter is
a)
a molecule
b)
a compound
c)
a mixture
d)
an atom
3.
Which statement best describes an element?
a)
any combination of two or more atoms of different types
b)
a pure substance made up of only one kind of atom
c)
a substance containing only carbon atoms
d)
any kind of crystal
4.
Which of the following changes is a physical change of matter?
a)
water evaporating
b)
paper burning
c)
a nail rusting
d)
a silver spoon tarnishing
5.
Which of the following changes is a chemical change of matter?
a)
ice melting to produce water
b)
vinegar combining with baking soda to produce carbon dioxide
c)
water boiling to produce water vapor
d)
liquid silica solidifying to form glass
6.
Which of the following is an example of a heterogeneous mixture?
a)
tap water
b)
chunky peanut butter
c)
orange-colored sugar water
d)
gold ring
7.
Which of the following is a pure substance?
a)
air
b)
granite
c)
water
d)
stainless steel
8.
The horizontal rows of the periodic table are called
a)
periods
b)
columns
c)
groups
d)
families
9.
Which of these recorded observations is qualitative, rather than quantitative?
a)
A chemical reaction is complete in 2.3 s.
b)
The solid has a mass of 23.4 g.
c)
The compound melts at 87.5C.
d)
Iron is denser than aluminum.
10.
Which of these statements is true of the scientific method?
a)
The steps may vary somewhat to suit the experiment.
b)
Working scientists rarely use it.
c)
Scientists must follow its steps exactly.
d)
Scientists rarely publish results of experiments.
11.
Theories are considered successful only if they
a)
can be used to make accurate predictions.
b)
can be stated in simple terms.
c)
can be written in the form of an equation.
d)
have been accepted by all scientists. 
12.
The SI base units for time and temperature are
a)
hour and degree Celsius.
b)
second and degree Celsius.
c)
hour and kelvin.
d)
second and kelvin.
13.
Which of these shows SI unit prefixes arranged in order from smallest to largest?
a)
centi, milli, kilo
b)
milli, centi, kilo
c)
kilo, milli, centi
d)
kilo, centi, milli
14.
A sample of bismuth has a mass of 343 g and a volume of 35.0 cm3.What is the density of bismuth?
a)
0.102 g/cm3
b)
9.80 g/cm3
c)
378 g/cm3
d)
1.20 104 g/cm3
15.
An object’s weight is a measure of 
a)
the force with which it is attracted by gravity.
b)
the pressure exerted on a scale.
c)
the amount of material per unit volume.
d)
the force causing the object to move.
16.
The SI base unit for mass is the
a)
gram
b)
cubic centimeter
c)
meter
d)
kilogram
17.
The number of significant figures in the measurement 170.040 km is
a)
Three
b)
Four
c)
Five
d)
Six
18.
The dimensions of rectangular solid are measured to be 2.0 cm, 3.0 cm, and 4.0 cm. The volume should be recorded as
a)
24 cm3.
b)
12 cm3.
c)
9 cm3.
d)
6 cm3.
19.
Expressed in scientific notation, 0.0930 m is
a)
93  X  10-3 m
b)
9.3  X 10-3 m.
c)
9.30 X  10-2 m.
d)
9.30 X 10-4 m.
20.
When 2.02 X 1023 is multiplied by 3.1 X 10-31, the product is
a)
6.3 X 10-8
b)
6.3 X 108
c)
6.3 X 1054
d)
6.3 X 10-54
21.

Matter is

a)

Anything that takes up space

b)

Anything that has mass

c)

Anything that has mass and takes up space

d)

The ability to do work

22.

Chemistry may be least useful in studying

a)

matter

b)

synthetic fibers

c)

falling bodies

d)

medicine

23.

An atom is

a)

The building blocks of matter

b)

The ability to do work

c)

Something that can be broken down by ordinary chemical means

d)

A substance that is uniform throughout

24.

A proton is

a)

A negatively charged particle located in the nucleus

b)

A negatively charged particle located outside the nucleus

c)

A neutral particle located inside the nucleus

d)

A positively charged particle located inside the nucleus

25.

A neutron is

a)

A negatively charged particle located in the nucleus

b)

A negatively charged particle located outside the nucleus

c)

A neutral particle located inside the nucleus

d)

A positively charged particle located inside the nucleus

26.

An electron is

a)

A negatively charged particle located in the nucleus

b)

A negatively charged particle located outside the nucleus

c)

A neutral particle located inside the nucleus

d)

A positively charged particle located inside the nucleus

27.

The nucleus has

a)

Protons and electrons

b)

Protons and neutrons

c)

Electrons and neutrons

d)

Protons, neutrons, and electrons

28.

The atomic number of an atom is based upon the number of

a)

nucleus

b)

electrons

c)

neutrons

d)

protons

e)

protons and neutrons

29.

Chemistry is the study of

a)

Matter

b)

Living Things

c)

Motion

d)

The Earth

30.

A physical property may be investigated by

a)

melting ice

b)

letting milk turn sour

c)

allowing silver to tarnish

d)

burning wood

31.

One chemical property of matter is

a)

boiling point

b)

texture

c)

reactivity

d)

density

32.

An example of a chemical change would be

a)

sanding wood

b)

melting ice

c)

milk going sour

d)

dew evaporating

33.

The melting of candle wax is classified as a physical change because it

a)

Does not produce a new substance

b)

transfers energy

c)

absorbs heat

d)

Changes the chemical properties of wax

34.

A chemical compound is

a)

A homogeneous solution of two or more substances.

b)

A pure chemical substance consisting of two or more elements that are bonded together.

c)

A single element that is a pure substance

d)

A heterogeneous mixture of two independent substances.

35.

An element is

a)

A pure substance that contains two or more elements.

b)

A homogeneous mixture of two or more substances.

c)

A pure substance that contains only one element.

d)

A heterogeneous mixture of two or more substances.

36.

A homogeneous mixture is

a)

Two substances combined together that are not uniform in appearance or composition.

b)

A pure substance with only one element.

c)

Two substances combined together that are uniform in appearance and composition.

d)

Two or more pure substances chemically combined that retain the properties of each substance.

37.

A heterogeneous mixture is 

a)

Two substances combined together that are not uniform in appearance or composition.

b)

A pure substance with only one element.

c)

Two substances combined together that are uniform in appearance and composition.

d)

Two or more pure substances chemically combined that retain the properties of each substance.

38.

A mixture is

a)

two or more substances that are physically combined together. Each substance has its own set of properties.

b)

two or more substances that are chemically combined together. Each substance has it’s own set of properties.

c)

Two substances combined together that are not uniform in appearance or composition.

d)

A pure substance with only one element

39.

The homogeneous mixture in the illustration above is in container ___.

a)

A

b)

B

c)

C

d)

D

40.

A list of pure substances could include

a)

bread dough

b)

vinegar

(5% acetic acid)

c)

Vitamin C (ascorbic acid)

d)

sea water

41.

A state of matter that has a definite volume and a definite shape is

a)

Liquid

b)

Gas

c)

Solid

d)

Plasma

42.

A state of matter that has an indefinite volume and an indefinite shape is

a)

Liquid

b)

Gas

c)

Solid

d)

Plasma

43.

To calculate the density of an object:

a)

Multiply its mass and its volume

b)

Divide its mass by its volume

c)

Divide its volume by its mass

d)

Divide its mass by its area

44.

An atomic number is

a)

the number of protons

b)

the number of neutrons

c)

the number of electrons

d)

the location of an atom on the periodic table

45.

An electron is:

a)

negatively charged

b)

positively charged

c)

neutrally charged

46.

The atomic number of oxygen 8, indicates that there are 8

a)

protons in the nucleus of an oxygen atom.

b)

Oxygen nuclides

c)

neutrons outside the oxygen atom’s nucleus

d)

energy levels in the oxygen atom’s nucleus

47.

An atom of potassium has 19 protons and 20 neutrons. 

What is its atomic mass?

a)

19

b)

20

c)

39

d)

10

48.

Which image shows a Bohr model for Carbon?

a)
b)
c)
d)
49.

The average atomic mass of an element is the average of the atomic masses of its

a)

Naturally occurring isotopes.

b)

Two most abundant isotopes.

c)

Nonradioactive isotopes

d)

Artificial isotopes

50.

An aluminum isotope consists of 13 protons, 13 electrons, 14 neutrons. 

It’s atomic mass is:

a)

13

b)

14

c)

27

d)

40

51.

Which of the following is NOT part of Dalton’s atomic theory?

a)

Atoms cannot be divided, created, or destroyed.

b)

The number of protons in an atom is its atomic number.

c)

In chemical reactions, atoms are combined, separated, or rearranged.

d)

All matter is composed of extremely small particles called atoms.

52.

Ag-109 has 62 neutrons.  The neutral atom has

a)

40 electrons

b)

47 electrons

c)

53 electrons

d)

62 electrons

53.

 What did Antoine Lavoisier do for science?

a)

Created the metric system

b)

Known as the “Father of Modern Chemistry”

c)

Proposed the Law of Conservation of Matter

d)

All of the above

54.

Because most particles fired at metal foil passed straight through, Rutherford concluded that

a)

atoms were mostly empty space

b)

atoms contained no charged particles

c)

electrons formed the nucleus

d)

atoms were indivisible.

55.

Energy can be _____________ or changed from one type to another.

a)

destroyed

b)

created

c)

transferred

d)

ignored

56.

Can energy be destroyed?

a)

Yes

b)

No

57.

What is another name for thermal energy?

a)

heat energy

b)

potential energy

c)

size

d)

mechanical energy

58.

Heat transfer always goes from

a)

cold to hot

b)

heat doesn’t transfer

c)

hot to cold

d)

freezing to cold

59.

What happens to particles as they heat up?

a)

They slow down

b)

They don’t move

c)

nothing

d)

they speed up

60.

You pick up a can of soda off of the countertop. 

The countertop underneath the can feels colder than the rest of the counter. 

Which explanation do you think is the best?

a)

The cold has been transferred from the soda to the counter.

b)

Some heat has been transferred from the counter to the soda.

c)

There is no heat energy left in the counter beneath the can.

d)

The heat beneath the can moves away into other parts of the countertop.

61.

Argon, krypton and xenon are

a)

Alkaline earth metals

b)

Noble gases

c)

Actinides

d)

Halogens

62.

To which section of the periodic table do Cr, Ag, and W belong?

a)

Lanthanides

b)

Nonmetals

c)

Transition Metals

d)

Halogens

63.

Chemistry is

a)

rhe study of the composition of matter and how it interacts

b)

The study of living organisms

c)

the study of plants

d)

the study of human life

64.

Solids have definite shape and a definite:

a)

Volume

b)

temperature

c)

pressure

d)

density

65.

The state of matter of ice is:

a)

Solid

b)

liquid

c)

gas

d)

all of them

66.

Density of a solid can be determined by measuring it's weight and it's:

a)

volume

b)

temperature

c)

pressure

d)

none of them

67.

The particles that make up solids are:

a)

Close together

b)

far apart

c)

Free particles

d)

all of them

68.

Solids that are made up of organised structures of repeating patterns are

a)

crystalline

b)

amorphous

c)

gases

d)

liquids

69.

ParticLes in a crystal lattice are:

a)

Completely still

b)

slightly vibrating

c)

brightly

d)

colourless

70.

Based on the types of molecules,a solid crystal may:

a)

have no ordered structure

b)

take on an ordered shape

c)

haven't any shape

d)

none of them

71.

When crystalline ice melts,it becomes as:

a)

gas

b)

liquid

c)

solid

d)

vapour

72.

Liquids have a definite volume but no definite:

a)

shape

b)

mass

c)

volume

d)

density

73.
What contribution did John Dalton make to atomic theory? 
a)
He discovered that every atom was positively charged. 
b)
He discovered that every element consisted of one type of atom that couldn't be divided. 
c)
He discovered that atoms had nuclei. 
d)
He discovered that atoms could be divided into smaller parts. 
74.
Rutherford's gold foil experiment provided evidence that...
a)
negative and positive charges are spread evenly throughout the atom.
b)
alpha particles have a positive charge.
c)
gold is not a dense as previously thought.
d)
there is a dense positively charged nucleus at the center of an atom.
75.
The first person to propose a theory about an atom called the Atomos Theory was
a)
Democritus
b)
Rutherford
c)
Dalton
d)
Aristotle
76.

How did Thomson build upon Dalton's model?

a)

His model was the same.

b)

He put electrons in orbitals.

c)

He discovered the nucleus.

d)

He discovered subatomic particles (electron).

77.
How did each model of the atom help to develop the atomic theory? 
a)
Each model provided opinions that were added.
b)
Each model showed different properties of the same structure. 
c)
Each model showed new particles that had been discovered.
d)
Each model built upon the other to show new particles or properties of previously discovered particles. 
78.

What was the name of the model pictured behind this question?

a)

Oatmeal Model

b)

Rutherford Model

c)

Bohr Model

d)

Plum Pudding Model

79.

Which of the following are parts of Dalton's theory?

a)

All substances are made of atoms.

b)

Atoms join with other atoms to make new substances.

c)

Atoms of different elements are different

d)

All of these are part of his theory

80.
When you add the number of protons and neutrons together, you are calculating...
a)
Atomic Number
b)
Atomic Mass
c)
Mass Number
d)
Pythagorean's Theorem
81.
The average mass of all naturally occurring isotope is also known as ...
a)
Atomic Number
b)
Atomic Mass
c)
Mass Number
d)
Radioactivity
82.
What is an element that has a different number of neutrons called?
a)
ion
b)
isotope
c)
carbon
d)
radioactive
83.

How many neutrons does this isotope of lithium have?

a)

8

b)

3

c)

4

d)

5

84.

Four isotopes of lead include lead-204, lead-206, lead-207, and lead-208. The average atomic mass of lead is 207.2. Which isotope of lead is likely to be the most abundant?

a)

204

b)

206

c)

207

d)

208

85.

How many neutrons does a Calcium-48 isotope have?

a)

16

b)

20

c)

28

d)

12

86.
How many neutrons does an Iodine-133 isotope have?
a)
80
b)
133
c)
53
d)
77
87.

Where is most of the mass in an atom?

a)

electron cloud

b)

nucleus

c)

it's equally distributed among the whole atom

d)

there is no mass in an atom

88.

How many protons would be present in this atom?

a)

35.453

b)

17

c)

18

d)

35

89.
Isotopes are atoms of the same element that have the same number of __________ but different number of __________ . Therefore, isotopes of the same element have different masses. 
a)
protons, neutrons
b)
protons, electrons
c)
neutrons, protons
d)
electrons, protons
90.

Classify Helium (He)

a)

Heterogeneous

b)

Homogeneous

c)

Element

d)

Compound

91.

When ice melts to water at 0 degrees C, that is an example of what type of change?

a)

chemical

b)

physical

c)

intensive

d)

property

92.

Mark all examples of a chemical change occurring

a)

liquid water evaporates

b)

a 12V current passes through water, breaking is down from

H2O (l)H_2O\ \left(l\right) into H2 (g)H_2\ \left(g\right) and O2 (g)O_2\ \left(g\right) (electrolysis)

c)

Iron rusts

d)

Coffee cools down to a drinkable temperature

93.

Choose which one is a physical property

a)

Flammability

b)

Solubility

c)

Water Reaction

d)

Magic

94.
Ability to rust is this type of property:
a)
Physical property
b)
Chemical property
95.

Name the separation technique shown in the diagram.

a)

evaporation

b)

distillation

c)

filtration

96.

Dyes in water soluble markers may be separated by means of..

a)

crystallization

b)

sublimation

c)

chromatography

d)

sedimentation

97.

Water and alcohol are easily separated by distillation because of their

a)

different melting points

b)

different colors

c)

different densities

d)

different boiling points

98.
What is the process of separating products with densities?
a)
centrifugation
b)
chromatography
c)
heating
d)
decantation
99.
Italian Salad Dressing
a)
heterogeneous mixture
b)
homogeneous mixture
100.

The products of a reaction have the same ________as the reactants.

a)

molecule

b)

atoms

c)

subscripts

d)

coefficients

101.

In the chemical equation H2O2(ag) → H2O(l) + O2(g), the O2 is a

a)

reactant

b)

yield

c)

product

d)

solid

102.
How many atoms of aluminum are on each side of the following equation: 4Al + 3O2 --> 2Al2 O3
a)
2
b)
6
c)
1
d)
4
103.
CaCO3 represents a chemical
a)
Symbol
b)
Formula
c)
Subscript
d)
Reaction
104.
The substances listed on the left side of a chemical equation are the
a)
Products
b)
Coefficients
c)
Precipitates
d)
Reactants
105.
How many Oxygen (O) atoms are in 2C2HO8Cl2
a)
2
b)
16
c)
8
d)
5
106.
All of the following are indicators of a chemical reaction except one.  Which one is NOT an indicator that a chemical reaction has taken place?
a)
he production of heat or light
b)
a color change
c)
the production of gas bubbles
d)
the dissolving of one substance in another
107.
Is burning wood a chemical or physical change?
a)
chemical
b)
physical
108.

Which of the following would be considered a physical change?

a)

Cutting paper

b)

pH test

c)

Burning marshmellow

d)

Roasting a Turkey

109.
Which of the following would be considered a homogeneous mixture
a)
Sweet Tea
b)
Vegetable soup
c)
24 Karat Gold
d)
Distilled water
110.
The smallest unit of matter that retains the properties of that matter is
a)
a molecule
b)
a compound
c)
a mixture
d)
an atom
111.
How many neutrons would Fe-56 have?
a)
56
b)
26
c)
30
d)
33
112.
What is the mass number of an atom of gold with 117 neutrons?
a)
117
b)
196
c)
196.97
d)
197

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