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Question Bank for Grade 9 Chemistry

Total questions: 128

Worksheet time: 1hrs 5mins

Name
Class
Date
1.

The three subatomic particles are

a)

proton, neutron, electron

b)

proton, nucleus, electron

c)

protein, neutron, electricity

d)

proton, neutral, electives

2.

99.9% of the atom's mass is found where?

a)

nucleus

b)

protons

c)

electron cloud

d)

neutrons

3.

Electrons are

a)

negative

b)

positive

c)

neutral

4.

Protons are

a)

negative

b)

positive

c)

neutral

5.

When an atom contains more electrons than protons, it is

a)

a neutral atom with no charge

b)

an ion and negatively charged

c)

an ion and positively charged

d)

an isotope and has more mass

6.

When an atom contains more neutrons than another atom with the same number of protons, it is

a)

a neutral atom with no charge

b)

an ion and negatively charged

c)

an ion and positively charged

d)

an isotope and has more mass

7.

The nucleus is ____________ charged.

a)

positively

b)

negatively

c)

neutral

8.

The area around the nucleus of an atom where the atom's electrons are most likely to be found is called

a)

electron cloud

b)

quark

c)

electron

d)

nucleus

9.

If a carbon atom has six protons and has a mass of 13 amu, how many neutrons are in that carbon atom?

a)

5

b)

6

c)

7

d)

8

10.

If a neutral atom has 8 protons, how many electrons does it have?

a)

7

b)

8

c)

9

d)

10

11.

A chemical symbol represents the _________ of an element.

a)

name

b)

structure

c)

reaction

d)

type

12.

Atoms of the same element with different numbers of neutrons are called

a)

metalloids

b)

transition elements

c)

radioactive

d)

isotopes

13.

A certain atom has 26 protons, 26 electrons, and 30 neutrons. What is its mass number?

a)

26

b)

30

c)

52

d)

56

14.

What is 'E' pointing to?

a)

electron cloud

b)

electron

c)

nucleus

d)

proton

e)

neutron

15.

Neutrons are

a)

negative

b)

positive

c)

neutral

16.

What is 'A' pointing to?

a)

electron cloud

b)

electron

c)

nucleus

d)

proton

e)

neutron

17.

What is 'B' pointing to?

a)

electron cloud

b)

electron

c)

nucleus

d)

proton

e)

neutron

18.

What is 'C' pointing to?

a)

electron cloud

b)

electron

c)

nucleus

d)

proton

e)

neutron

19.

What is 'D' pointing to?

a)

electron cloud

b)

electron

c)

nucleus

d)

proton

e)

neutron

20.

Which correctly pairs the OUTSIDE particles with their charge?

a)

electrons: positive

b)

protons: positive

c)

neutrons: neutral

d)

electrons: negative

21.

What are the particles that are found in the nucleus of an atom?

a)

protons and electrons

b)

neutrons and electrons

c)

protons and neutrons

d)

protons only

22.

An iron atom has an atomic mass of 56. Its atomic number is 26. How many neutrons does the iron atom have?

a)

30

b)

56

c)

26

d)

82

23.

What is the region around the nucleus of an atom where electrons might be found?

a)

orbital zone

b)

electron cloud

c)

electron zone

d)

electron shell

24.

What charge does a neutron have?

a)

positive

b)

negative

c)

switches between positive and negative

d)

no charge

25.

Each of a group of atoms has 1 proton, but the number of neutrons is different. What is this type of atom known as?

a)

isomer

b)

isotope

c)

anion

d)

ion

26.

Each of a group of atoms has 1 proton, but the number of electrons is different. What is this type of atom known as?

a)

isomer

b)

isotope

c)

anion

d)

ion

27.

Identify the atom in the image.

a)

hydrogen

b)

oxygen

c)

helium

d)

carbon

28.

Oxygen's atomic number is 8. This means that an oxygen atom has

a)

eight protons in the nucleus

b)

a total of eight protons and neutrons

c)

eight neutrons in its nucleus

d)

a total of eight neutrons and electrons

29.

What is a substance that is made of only one type of atom?

a)

element

b)

compound

c)

mixture

d)

solution

30.

An atom consists of 8 protons and 6 neutrons. What is the total number of electrons present in this neutral atom?

a)

6

b)

8

c)

2

d)

14

31.

An aluminum atom has 13 protons, 13 electrons, and 14 neutrons. What is its mass number?

a)

13

b)

26

c)

27

d)

40

32.

What is found between the electrons and the nucleus?

a)

air

b)

empty space

c)

other atoms

d)

other forms of matter

33.

What is a substance made of two or more different atoms?

a)

element

b)

mixture

c)

compound

d)

solution

34.

Who first proposed an atomic theory based on scientific knowledge?

a)

Ernest Rutherford

b)

John Dalton

c)

JJ Thomson

d)

Dmitri Mendeleev

35.

99.9% of the atom’s mass is found where?

a)

nucleus

b)

protons

c)

electron cloud

d)

neutron

36.

When an atom contains more electrons than protons, it is

a)

a neutral atom with no charge

b)

an ion and negatively charged

c)

an ion and positively charged

d)

an isotope and heavier

37.

If an atom contains one proton, one neutron and one electron, what is that atom’s mass?

a)

1 amu

b)

2 amu

c)

3 amu

d)

0 amu

38.

What part of the atom occupies the most mass?

a)

nucleus

b)

protons

c)

neutrons

d)

electron cloud

39.

Who developed the first periodic table?

a)

Dmitri Mendeleev

b)

John Dalton

c)

JJ Thomson

d)

Neils Bohr

40.

Who created a model of the atom with electrons moving around the nucleus in fixed orbits?

a)

Neils Bohr

b)

Ernest Rutherford

c)

Dmitri Mendeleev

d)

JJ Thomson

41.

Who discovered the neutron?

a)

James Chadwick

b)

Ernest Rutherford

c)

JJ Thomson

d)

Neils Bohr

42.

Who discovered the electron and created the plum pudding model of the electron?

a)

JJ Thomson

b)

Neils Bohr

c)

Ernest Rutherford

d)

Dmitri Mendeleev

43.

Who performed the gold foil experiment and discovered that the atom is mostly empty space around a dense nucleus?

a)

Ernest Rutherford

b)

Neils Bohr

c)

Dmitri Mendeleev

d)

JJ Thomson

44.

Which of the following is a heterogeneous mixture?

a)

brass

b)

sand

c)

Kool-aid

d)

vanilla yogurt

45.

Which of the following is a homogeneous mixture?

a)

jello

b)

granite

c)

dirt

d)

salsa

46.

What type of mixture would coffee be?

a)

homogeneous

b)

heterogeneous

47.

What type of mixture would fruit salad be?

a)

homogeneous

b)

heterogeneous

48.

What type of mixture would a nail be?

a)

homogeneous

b)

heterogeneous

49.

What type of mixture would a bottle of shampoo be?

a)

homogeneous

b)

heterogeneous

50.

What type of mixture would milk chocolate be?

a)

heterogeneous

b)

homogeneous

51.

What type of mixture is a peanut M&M?

a)

heterogeneous

b)

homogeneous

52.

What type of mixture is honey?

a)

heterogeneous

b)

homogeneous

53.

What type of mixture is chicken noodle soup?

a)

heterogeneous

b)

homogeneous

54.

True or False: "Matter" is anything that has a mass and takes up space

a)

True

b)

False

55.

True or False: Temperature that ice melts is the same as the temperature at which it freezes (zero degrees celcius)

a)

True

b)

False

56.

True or False: A liquid has a indefinite shape, definite volume

a)

True

b)

False

57.

True or False: Water condenses at 100 degrees celcius

a)

True

b)

False

58.

The freezing point of a substance is ____ the melting point of the same substance.

a)

greater than

b)

less than

c)

equal to

d)

unrelated to

59.

A solid is a state of matter that has a(n)

a)

Indefinite volume and indefinite shape

b)

Definite volume and definite shape

c)

definite volume and an indefinite shape

d)

indefinite volume and a definite shape

60.

Particles of a liquid

a)

are tightly packed together and stayed fixed

b)

have no viscosity

c)

decrease in volume with increasing temperature

d)

are free to move in a container but stay close together

61.

In which state of matter do atoms spread apart and fill all the space available to them?

a)

crystal

b)

liquid

c)

gas

d)

solid

62.

During the process of sublimation,

a)

a solid turns directly into a gas

b)

a solid turns directly into a liquid

c)

a gas turns directly into a liquid

d)

a liquid turns directly into a gas

63.

Which state of matter are particles packed tightly together in the same position?

a)

gas

b)

solid

c)

liquid

d)

compound

64.

Which phase is represented in letter A

a)

Solid

b)

Liquid

c)

Gas

65.

Which phase is represented in letter c

a)

Solid

b)

Liquid

c)

Gas

66.

Which phase is represented in letter E

a)

Solid

b)

Liquid

c)

Gas

67.

Which phase changes a represented at B?

a)

vaporization and melting

b)

melting and freezing

c)

condensing and vaporization

68.

Which phase changes a represented at D?

a)

vaporization and melting

b)

melting and freezing

c)

condensing and vaporization

69.

Q. 

Which of the following is a heterogeneous mixture?

answer choices

a)

brass

b)

sand

c)

Kool-aid

d)

vanilla yogurt

70.

What type of mixture would coffee be?

a)

homogeneous

b)

heterogeneous

71.

What type of mixture would fruit salad be?

a)

homogeneous

b)

heterogeneous

72.

H is an example of a(n)...

a)

Element

b)

Compound

c)

Molecule

d)

Mixture

73.

What kind of properties can only be observed when a substance changes into a different substance?

a)

physical properties

b)

chemical properties

74.

Which type of property is the ability to conduct electricity?

a)

physical property

b)

chemical property

75.

Properties that can be observed without changing the identity of the substance.

a)

Physical

b)

Chemical

76.

Q. Example for physical property

a)

odor

b)

burns in air

c)

reacts with water to create hydrogen gas

d)

rust

77.

Fizzing, foaming, and burning are all examples of

a)

Chemical change

b)

Physical change

78.

Flammability is an example of what property?

a)

Chemical property

b)

Physical property

79.

Q. Contains only one kind of atom.

a)

Element

b)

Compund

c)

Mixture

80.

Q. Contains two or more atoms combined

a)

Elements

b)

Compounds

c)

Mixtures

81.

Q. The air is a _________. 

a)

element 

b)

mixture 

c)

compound 

d)

energy 

82.

Examples are milk and gasoline.

a)

elements

b)

mixtures

c)

compounds

83.

. 

Examples are diamonds (C) and Uranium (U)

a)

elements

b)

mixtures

c)

compounds

84.

 Which of the following is not a chemical property? 

a)

rusting 

b)

boiling

c)

rotting

d)

burning

85.

Which one of these is a chemical property?

a)

melting point

b)

boiling point

c)

color

d)

flammability

86.

To separate a mixture of salt and water what separation method is used?

a)

Filtration

b)

Distillation

c)

Chromatography

d)

Evaporation

87.

To separate a mixture of soil and water what separation method is used?

a)

Filtration

b)

Distillation

c)

Chromatography

d)

Evaporation

88.

Can you separate salt from water using filtration?

a)

yes

b)

no

89.

The separation technique that involves heating a solution until the liquid changes into a gaseous state, leaving behind a solid is known as

a)

decanting

b)

evaporation

c)

loading

d)

chromatography

90.

Iron fillings can be separated from iron and Sulphur mixture by

a)

magnetic attraction

b)

heating

c)

sieving

d)

sedimentation

91.

Which one of the following solids is insoluble in water?

a)

sugar

b)

sand

c)

copper sulfate

d)

salt

92.

If you spilled nails in a sandbox, what separation tool/method could you use to clean out the sandbox so it would be safe for children to play in?

a)

Filter

b)

Magnet

c)

Evaporation

d)

Screen

93.

Mixtures can be separated .......................

a)

Physically

b)

Chemically

94.
a)
280.57 g
b)
260.57 g
c)
265.7 g
d)
266 g
95.
a)
270 g
b)
272.0 g
c)
272.1 g
d)
270.21 g
96.
a)
330.6 g
b)
336 g
c)
330.68 g
d)
336.8 g
97.
a)
1.7 mL
b)
2 mL
c)
1.6 mL
d)
1.8 mL
98.
a)
30.6 mL
b)
30.5 mL
c)
36.0 mL
d)
35.0 mL
99.
a)
12.9 mL
b)
12.5 mL
c)
12.4 mL
d)
13.1 mL
100.
a)
31 mL
b)
30 mL
c)
32 mL
d)
29 mL
101.
a)
40.6 mL
b)
47 mL
c)
46 mL
d)
40.7 mL
102.
a)
15 cm
b)
10.5 cm
c)
10.6 cm
d)
10.4 cm
103.
a)
8.8 cm
b)
9 cm
c)
8.8 cm
d)
8.7 cm
104.
a)
60 C
b)
59 C
c)
61 C
d)
62 C
105.
a)
31 C
b)
33 C
c)
32 C
d)
34 C
106.
a)
21.5 C
b)
22 C
c)
21 C
d)
23 C
107.
a)
46 C
b)
43 C
c)
44 C
d)
45 C
108.
a)
46 C
b)
43 C
c)
44 C
d)
45 C
109.
a)
92.5 C
b)
94 C
c)
95 C
d)
93 C
110.
Convert 94.5 cm to m
a)

.945 m

b)

9.45 m

c)

945 m

d)

.0945 m

111.
Convert 600 Kg to dg
a)
60000 dg
b)
6000000 dg
c)
.06 dg
d)
.006 dg
112.
Convert 45 HL to DL
a)
450 DL
b)
4500 DL
c)
.045 DL
d)
4.5 DL
113.
Convert 1.7 mm to Km
a)
0.00000017 Km
b)
0.0000017 Km
c)
1700000 Km
d)
17000000 Km
114.
Convert 21.56 cm to m
a)
215.6 m
b)
21.56 m
c)
2.156 m
d)
0.2156 m
115.
Convert 0.0056 Hg to g
a)
0.056 g
b)
0.56 g
c)
5.6 g
d)
56 g
116.
Convert 0.00148 cm to m
a)
0.000148 m
b)
0.148 m
c)
1.48 m
d)
0.0000148 m
117.
Convert 101.2 g to Hg
a)
1.012 g
b)
10.12 g
c)
1012 g
d)
0.01012 g
118.
Convert 266.5 cL to DL
a)
26.65 DL
b)
0.2665 DL
c)
2.665 DL
d)
0.02665 DL
119.
Convert 12 mg to Dg
a)
1200 Dg
b)
0.012 Dg
c)
0.12 Dg
d)
0.0012 Dg
120.
Write the following number in scientific notation: 0.0028412
a)
2.8412x10-3
b)
2.8412x103
c)
2841.2x10-6
d)
2841.2x106
121.
Write the following number in scientific notation: 0.00000026345
a)
2134.5x10-10
b)
2134.5x1010
c)
2.6345x10-7
d)
2.6345x107
122.
Write the following number in scientific notation: 2005608
a)
200560.8x10-6
b)
200560.8x106
c)
2.005608x10-6
d)
2.005608x106
123.
Write the following number in scientific notation: -60012000
a)
-6.0012x10-7
b)
-6.0012x107
c)
6.0012x10-7
d)
6.0012x107
124.
Write the following in standard notation: 2.065x1010
a)
0.00000000002065
b)
0.0000000002065
c)
20650000000000
d)
20650000000
125.
Write the following in standard notation: 8.015x10-6
a)

0.000008015

b)

0.0000008015

c)

8015000

d)

8015000000

126.
Write the following in standard notation: -5.1002x10-4
a)
0.00051002
b)
-0.00051002
c)
51002
d)
-51002
127.
Write the following in standard notation: 6.001x104
a)
60010
b)
0.0006001
c)
0.00006001
d)
60010000
128.
Write the following in standard notation: 5x10-3
a)
500
b)
5000
c)
0.0005
d)
0.005

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