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Year 9 Chemistry Revision

Total questions: 142

Worksheet time: 1hrs 24mins

Name
Class
Date
1.
Which of these is NOT an element?
a)
Caesium
b)
Arsenic
c)
Methane
d)
Neptunium
2.
Which of these elements is a NON-METAL?
a)
Francium
b)
Lithium
c)
Germanium
d)
Iodine
3.
What is a COMPOUND?
a)
Two or more of the same type of atom which are chemically bonded together
b)
Two or more different atoms which are chemically bonded together
c)
Two or more different atoms which are NOT bonded together
d)
Lots of the same type of atom bonded together
4.
How many elements are there in the periodic table? 
a)
124
b)
110
c)
150
d)
118
5.
Two or more different substances which are NOT chemically bonded together is a...
a)
Distillation
b)
Mixture
c)
Compound
d)
Element
6.
Complete this equation: Metal + acid -->
a)
alkali + non-metal
b)
salt + hydrogen
c)
salt + alkali
d)
salt + water
7.
In the rutherford experiment, alpha particles were fired at gold atoms. 99% of them travelled straight through without changing direction. This showed that...
a)
99% of the atom is empty space
b)
99% of the atom is made up of particles
c)
1% of the atom is empty space
d)
1% of the atom is made up of particles
8.
A proton has what charge?
a)
Neutral (0)
b)
+1
c)
+2
d)
-1
9.
How many protons does Lithium have?
a)
1
b)
2
c)
3
d)
4
10.
How many electrons does sodium have?
a)
11
b)
12
c)
13
d)
15
11.
How many neutrons does Hydrogen have?
a)
0
b)
1
c)
2
d)
3
12.
Which atom is this?
a)
Helium
b)
Lithium
c)
Beryllium
d)
Sodium
13.
Most of the elements on the periodic table are...
a)
Plastics
b)
Non-metals
c)
Metals
14.
Non-metals form ions with what charge?
a)
Positive
b)
Negative
c)
Neutral
15.
When Oxygen forms an ion, what charge does it have?
a)
+1
b)
-1
c)
+2
d)
-2
16.
When Lithium forms an ion, what charge does it have?
a)
1+
b)
2+
c)
3+
d)
0
17.
Which of these groups is very unreactive (inert)?
a)
Group 0 Noble Gases
b)
Group 1 Alkali Metals
c)
Group 7 Halogens
18.

Electrons have a relative mass of…

a)

1

b)

0

c)

2

d)

very small

19.

What happens to the boiling points and melting points of Group 7 elements as you go down the group?

a)

They decrease

b)

They stay the same

c)

They increase

d)

They decrease and then level off

20.

Atoms are made from…

a)

electrons

b)

protons

c)

neutrons

d)

protons, neutrons and electrons

21.

In the plum pudding model, where were the electrons located?

a)

In the middle

b)

Around the outside

c)

Embedded throughout

d)

In shells

22.

The overall charge of an atom is 0 because…

a)

the number of protons and the number of neutrons are the same

b)

the number of neutrons and the number of electrons are the same

c)

the number of electrons and the number of protons are the same

d)

there is no charge on a proton

23.

When you describe a chemical reaction using a word equation you show the…

a)

reactants

b)

reactants and products

c)

products

d)

symbols

24.

Protons have a relative mass of…

a)

1

b)

0

c)

2

d)

very small

25.

How would you describe the reactivity of Group 1 metals?

a)

Very reactive

b)

Slightly reactive

c)

Not very reactive

d)

Unreactive

26.

How are elements in the modern periodic table arranged?

a)

In order of atomic mass

b)

In order of atomic number

c)

In alphabetical order

d)

By number of neutrons

27.

Later experiments proved that particles in the nucleus had a positive charge. These were named as…

a)

protons

b)

neutrons

c)

electrons

d)

atoms

28.

The nuclear model showed that most of the mass of an atom can be found in the…

a)

centre of the atom

b)

outside of the atom

c)

left-hand side of the atom

d)

right-hand side of the atom

29.

How can the reactivity of the noble gases be described?

a)

Unreactive

b)

Very reactive

c)

More reactive

d)

Less reactive

30.

Which transition metals are commonly used as catalysts?

a)

Iron

b)

Platinum

c)

Palladium

d)

All of the metals listed

31.

Group 1 metals are also known as…

a)

acidic metals

b)

alkali metals

c)

soluble metals

d)

insoluble metals

32.

How did Mendeleev overcome the problems with the early periodic table?

a)

By arranging elements alphabetically

b)

By leaving gaps

c)

By making it up

d)

All of the ways listed

33.

Niels Bohr suggested that ___________ orbited the nucleus.

a)

protons

b)

neutrons

c)

electrons

d)

protons and neutrons

34.

The properties of a compound compared to the properties of the individual elements are…

a)

different

b)

the same

c)

similar

d)

not changed

35.

How does the reactivity of Group 1 metals change as you go down the group?

a)

It decreases

b)

It stays the same

c)

It increases

d)

It decreases and then levels off

36.

How are electrons arranged around the nucleus?

a)

Circles

b)

Shells

c)

Rings

d)

Stacks

37.

Why do equations using formulae need to be balanced?

a)

To make it fair

b)

So it's right

c)

The number of atoms need to be the same for reactants and products

d)

The number of protons need to be the same

38.

Which separation method is used to separate liquids based on their boiling points?

a)

Distillation

b)

Fractional distillation

c)

Filtering

d)

Crystallisation

39.

Protons have an electric charge of…

a)

+1

b)

0

c)

-1

d)

2

40.

A mixture contains two or more elements or compounds that are…

a)

chemically combined

b)

not chemically combined

c)

mixed together

d)

glued together

41.

The overall charge of an atom is…

a)

+1

b)

0

c)

-1

d)

2

42.

How were the elements originally arranged in the early periodic table?

a)

By atomic weights

b)

By number of protons

c)

By number of electrons

d)

By their reactivity

43.

A compound is defined as being…

a)

two or more atoms of different elements chemically combined together

b)

two or more atoms of different elements glued together

c)

an atom of one element chemically bonded to other atoms of the same element

d)

atoms that have reacted

44.

Elements contain…

a)

the same type of element

b)

the same type of atom

c)

the same type of proton

d)

the same type of charge

45.

Later experiments proved that the nucleus also contained __________ as well as protons.

a)

atoms

b)

neutrons

c)

electrons

d)

elements

46.

Isotopes are atoms of an element with a different number of…

a)

neutrons

b)

electrons

c)

protons

d)

protons and electrons

47.

Which separation method is used to separate a soluble solid from a solution?

a)

Crystallisation

b)

Filtering

c)

Distillation

d)

Chromatography

48.

What word or phrase can be used to describe the outer shell of the noble gases?

a)

Half full

b)

Nearly full

c)

Full

d)

Bursting

49.

Relative atomic mass is an average of the amount of…

a)

isotopes

b)

electrons

c)

protons

d)

neutrons

50.

The plum pudding model suggested that atoms were like a ball. What was this ball made of?

a)

Negative charge

b)

Positive charge

c)

Protons

d)

Electrons

51.

What is the maximum number of electrons found in full electron shells?

a)

2,2,8,8

b)

2,2,8

c)

2,8,8,8

d)

2,6,8,2

52.

Where are metals found on the periodic table?

a)

Left

b)

Left and middle

c)

Right

d)

Right and middle

53.

What does the group number in the periodic table tell us about the elements within that group?

a)

The elements all have the same number of neutrons

b)

The elements all have the same number of electrons

c)

The elements all have the same number of electrons in their outer shell

d)

The elements all have the same atomic mass

54.

Electrons have an electric charge of…

a)

+1

b)

0

c)

-1

d)

2

55.

The mass number of an atom is the number of…

a)

protons

b)

neutrons

c)

protons and neutrons

d)

electrons

56.

Atoms of different elements contain a different number of…

a)

electrons

b)

neutrons

c)

protons and neutrons

d)

protons

57.

The number of electrons in an atom is the same as…

a)

the number of protons plus the number of neutrons

b)

the number of neutrons

c)

the number of protons

d)

the number of neutrons minus the number of protons

58.

What happens to the boiling points of noble gases as you go down the group?

a)

They decrease

b)

They stay the same

c)

They become solids

d)

They increase

59.

Where are non-metals found on the periodic table?

a)

Left

b)

Left and middle

c)

Right

d)

Right and middle

60.

Neutrons have an electric charge of…

a)

+1

b)

0

c)

-1

d)

2

61.

Which separation method is used to separate solvents from a solution?

a)

Crystallisation

b)

Distillation

c)

Filtering

d)

Fractional distillation

62.

The number of electrons in an atom can be found by looking at the…

a)

atomic number

b)

atomic mass

c)

symbol

d)

group number

63.

Neutrons have a relative mass of…

a)

1

b)

0

c)

2

d)

very small

64.

How does the reactivity of Group 7 elements change as you go down the group?

a)

It decreases

b)

It stays the same

c)

It increases

d)

It increases and then levels off

65.

How many electrons do Group 1 metals have on their outer shell?

a)

3

b)

2

c)

1

d)

0

66.

Which separation method is used to separate mixtures of soluble substances?

a)

Crystallisation

b)

Filtering

c)

Distillation

d)

Chromatography

67.
What subatomic particles would you find in the nucleus of an atom?
a)
Protons only
b)
Protons and Neutrons
c)
Neutrons and Electrons
d)
Protons and Electrons 
68.
Which subatomic particles contribute the most to the mass of an atom?
a)
Protons, Neutrons, Electrons
b)
Protons only
c)
Protons and Electrons
d)
Protons and Neutrons
69.
An atom has 10 protons, 15 neutrons and 10 electrons what is its mass number.
a)
20
b)
10
c)
5
d)
25
70.
An element with a mass number of 11 and an atomic number of 5 has how many neutrons?
a)
11
b)
5
c)
6
d)
16
71.
The particles of the atom you can find by knowing the atomic number.
a)
neutrons
b)
protons and electrons
c)
protons and neutrons
d)
atomic mass
72.
What is the atomic mass of the atom pictured? 
a)
9
b)
10
c)
18
d)
19
73.
What is the atomic number of the atom pictured? 
a)
9
b)
10
c)
18
d)
19
74.
What do the following properties describe? : shiny, ductile, good conductor, high melting point
a)
metal
b)
nonmetal
c)
metalloid
75.
Elements in the periodic table are arranged in order by their ...
a)
atomic number
b)
atomic mass (mass number)
c)
metal, nonmetal, or metalloid properties
76.
This particle determines what element you have - the elements identity.
a)
electron
b)
proton
c)
neutron
d)
valence shell
77.
What is the electron configuration of sodium?
a)
2.8
b)
2.8.2
c)
2.8.1
d)
11
78.
Which element has an electron configuration of 2.5?
a)
Oxygen
b)
Nitrogen
c)
Phosphorus
d)
Carbon
79.
Which element has an electron configuration of 2.8.8?
a)
Lead
b)
Flourine
c)
Neon
d)
Argon
80.

Which element has the electron configuration of 2.7?

a)

Krypton

b)

Iodine

c)

Fluorine

d)

Barium

81.

Which alkali metal is most reactive out of the following

a)

rubidium

b)

potassium

c)

sodium

d)

lithium

82.

How many electrons do the alkali metals have in their outer shell?

a)

1

b)

2

c)

8

d)

7

83.

What happens to the reactivity of the alkali metals as you move down the group?

a)

increases

b)

decreases

84.

Which gas is released when the alkali metals react with water?

a)

hydrogen

b)

oxygen

c)

hydroxide

d)

carbon dioxide

85.

What happens to the shielding affect as you go down the group?

a)

increases

b)

decreases

86.

Which of the following is TRUE about an isotope?

a)

same number of protons and neutrons

b)

same number of protons but different number of neutrons

c)

same atomic mass but different atomic number

d)

neutron and electron numbers are the same

87.

What sub-atomic particle is labelled A?

a)

Neutron

b)

Electron

c)

Ion

d)

Atom

88.

What sub-atomic particle is labelled B?

a)

Neutron

b)

Electron

c)

Ion

d)

Atom

89.

Which atom has 4 electrons?

a)

Atom A

b)

Atom B

c)

Atom C

d)

Atom D

90.

Which atom would be found in group 2?

a)

Atom A

b)

Atom B

c)

Atom C

d)

Atom D

91.

Carbon has 6 electrons. Which atom is carbon?

a)

Atom A

b)

Atom B

c)

Atom C

d)

Atom D

92.

What is the relative atomic mass of lithium?

a)

7

b)

3

c)

4

d)

10

93.

What is the atomic number of lithium?

a)

7

b)

3

c)

4

d)

10

94.

How many neutrons does a lithium atom have?

a)

7

b)

3

c)

4

d)

10

95.

What is the mass and charge of an electron?

a)

Mass = 1, Charge = Neutral

b)

Mass = 1, Charge = Positive

c)

Mass = 1, Charge = Negative

d)

Mass = almost 0, Charge = negative

96.

What is the mass and charge of an Proton?

a)

Mass = 1, Charge = Neutral

b)

Mass = 1, Charge = Positive

c)

Mass = 1, Charge = Negative

d)

Mass = almost 0, Charge = negative

97.

What is the mass and charge of an Neutron?

a)

Mass = 1, Charge = Neutral

b)

Mass = 1, Charge = Positive

c)

Mass = 1, Charge = Negative

d)

Mass = almost 0, Charge = negative

98.

What is an element?

a)

2 or more substance not chemically combined

b)

substance made of 1 type of atom

c)

substance made of more than one type of atom chemically joined together

d)

atoms of the same element with different number of neutrons

99.

What is an compound?

a)

2 or more substance not chemically combined

b)

substance made of 1 type of atom

c)

substance made of more than one type of atom chemically joined together

d)

atoms of the same element with different number of neutrons

100.

What is an mixture?

a)

2 or more substance not chemically combined

b)

substance made of 1 type of atom

c)

substance made of more than one type of atom chemically joined together

d)

atoms of the same element with different number of neutrons

101.

What is an isotope?

a)

2 or more substance not chemically combined

b)

substance made of 1 type of atom

c)

substance made of more than one type of atom chemically joined together

d)

atoms of the same element with different number of neutrons

102.

How many electrons can you put in the 1st, second and third electron shells?

a)

4,4,8

b)

2,8,8

c)

4,8,8

d)

1,2,8

103.

What is John Dalton's model of the atom?

a)

Electrons orbit in fixed energy levels (shells)

b)

Nucleus at the centre of the atom

c)

Protons and neutrons found in the nucleus

d)

A solid sphere that could not be divided into smaller parts

104.

What did Niels Bohr discover about the Atom?

a)

Electrons orbit in fixed energy levels (shells)

b)

Nucleus at the centre of the atom

c)

Protons and neutrons found in the nucleus

d)

A solid sphere that could not be divided into smaller parts

105.

How do you calculate the number of neutrons in an atom?

a)

atomic number + mass number

b)

Mass number - atomic number

c)

Atomic number - mass number

d)

Mass number x atomic number

106.

Which sub atomic particles make up the atom?

a)

Electrons Only

b)

Protons Only

c)

Electrons and Protons

d)

Electrons, Protons and Neutrons

107.

What charge do each of the sub atomic particles have?

a)

Protons (-), Electrons (+), Neutrons (0)

b)

Protons (+), Electrons (-), Neutrons (0)

c)

Protons (0), Electrons (-), Neutrons (+)

d)

Protons (+), Electrons (0), Neutrons (-)

108.

How many protons does a sodium atom have?

a)

23

b)

12

c)

11

109.

How many electrons does a sodium atom have?

a)

23

b)

12

c)

11

110.

How many neutrons does a sodium atom have?

a)

23

b)

12

c)

11

111.

The mass number of an element tells you the number of...?

a)

Protons Only

b)

Protons and Electrons

c)

Neutrons Only

d)

Protons and Neutrons

112.

The atomic number of an element tells you the number of ...?

a)

Protons

b)

Protons and Neutrons

c)

Electrons

d)

Neutrons

113.

Ions are formed when atoms lose or gain ... ?

a)

Protons

b)

Neutrons

c)

Electrons

114.

Isotopes are atoms with the same number of protons but different numbers of ...?

a)

Neutrons

b)

Electrons

115.

Atoms are always neutral - they have no overall charge?

a)

True

b)

False

116.

How many ELEMENTS are present in sulfuric acid (H2SO4)?

a)

2

b)

3

c)

4

d)

7

117.

How many ATOMS are present in sulfuric acid (H2SO4)?

a)

2

b)

3

c)

4

d)

7

118.

Is the following chemical equation balanced?


H2SO4 + 2NaOH -> Na2SO4 + H2O

a)

Yes

b)

No

119.

Which number should fill in the gap to make the equation balanced?

Mg + _ HCl -> MgCl2 + H2

a)

No number, it is balanced already.

b)

1

c)

2

d)

3

120.

Which statement best describes the 'plum pudding' model of atomic structure?

a)

Mostly empty space with positive protons and negative electrons.

b)

A positive nucleus surrounded by negative electrons.

c)

A ball of positive charge with negative electrons scattered in the ball.

d)

A ball of negative charge with positive electrons scattered in the ball.

121.

Rutherford's experiment with alpha particles showed the plum pudding was wrong which two statements best describe the nuclear model?

a)

A ball of positive charge with negative electrons.

b)

Most of the atom is empty space.

c)

A positive nucleus is surrounded by negative electrons.

d)

The mass of an atom is spread evenly over the whole atom.

122.

How many electrons can the second shell of an atom hold?

a)

2

b)

8

c)

16

d)

32

123.

Atoms are a lot more stable when they have full outer shells, often they do not and so need to react to fill it.

a)

True

b)

False

124.

Which is the correct diagram showing the structure of a sodium atom?

a)
b)
c)
d)
125.

The group number of the element tells you...?

a)

The number of electron shells.

b)

The number of electrons in the outer shell.

c)

The number of protons.

d)

The number of electrons.

126.

The period number of the element tells you...?

a)

The number of electron shells.

b)

The number of electrons in the outer shell.

c)

The number of protons.

d)

The number of electrons.

127.

What is the electron configuration of magnesium?

a)

2,8,1

b)

24

c)

12

d)

2,8,2

128.

Subatomic particles with a negative charge

a)

Electrons

b)

Neutrons

c)

Protons

d)

Quarks

129.
Subatomic particles with a positive charge
a)
neutrons
b)
atomic mass
c)
protons
d)
isotopes
130.
Subatomic particles that are neutral in charge
a)
Neutrons
b)
Protons
c)
Nucleus 
d)
Electrons
131.

Look at this picture of Argon off the periodic table. Which of the following is true for this element?

a)

18 protons

b)

40 protons

c)

22 protons

d)

21.9 protons

132.

Which part of an atom is used to identify it?

a)

number of protons

b)

number of neutrons

c)

number of electrons

133.

The atomic mass of an atom is equal to

a)

number of protons plus number of neutrons

b)

number of protons plus number of electrons

c)

number of electrons plus the number of neutrons

134.
The nucleus of an atom is made of
a)
electrons and protons
b)
electrons and neutrons
c)
protons and neutrons
d)
empty space
135.
Outside the nucleus of an atom are these
a)
protons
b)
neutrons
c)
quarks
d)
electrons
136.
The mass of this particle is so small that it is not counted.
a)
proton
b)
electron
c)
neutron
d)
quark
137.
The charge of the nucleus of all atoms or ions
a)
positive
b)
negative
c)
neutral
d)
sometimes positive and sometimes negative
138.
The number of these determines which element an atom is.
a)
neutrons
b)
electrons
c)
protons
139.
All atoms of a particular element have the same number of these
a)
electrons
b)
neutrons
c)
protons
140.
Which of these phrases best describes an atom?
a)
a positive nucleus surrounded by a hard negative shell
b)
a positive nucleus surrounded by a cloud of negative charges
c)
a hard sphere with postive and negative charges on the outside
d)
a negative nucleus surrounded by protons and neutrons
141.
What is true about an atom?
a)
Most of the space in an atom is taken up by the nucleus
b)
Atoms are mostly empty space
c)
Atoms have no mass
d)
Electrons have much more mass that protons or neutrons.
142.
The term "neutral" means
a)
having only a little bit of charge
b)
having a positive charge
c)
having a negative charge
d)
having no charge at all

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SECOND 2025/26 Benchmark 1 Prep

quiz

Worksheet

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11th Grade