CAMBRIDGE LOWER SECONDARY SCIENCE 9 UNIT 2: PROPERTIES OF MATERIALS
Name ___________________________________
Date _____________
Worksheet 2.1A
Matching terms and facts
Place all of these facts into the correct place in the table on the next page. The facts may be used once,
more than once or not at all. Some have been done for you.
have the same mass
as neutrons
have a positive electrical
charge
have the smallest mass
have the same mass
as protons
have a negative
electrical charge
are found in the centre
of the atom
are not found in the
nucleus
have no electrical charge
are found in the same
numbers as electrons
are found in the nucleus
are found in the same
numbers as protons
are found in different shells
around the nucleus
the atomic number tells
you how many there are
the mass number is used to
calculate how many there
are
Cambridge Lower Secondary Science 9 – Mary Jones, Diane Fellowes-Freeman and Michael Smyth © Cambridge University Press 2021
1
CAMBRIDGE LOWER SECONDARY SCIENCE 9 UNIT 2: PROPERTIES OF MATERIALS
Protons
Neutrons
Electrons
the atomic number tells
you how many there are
the mass number is used to the atomic number tells
calculate how many there
you how many there are
are
have a positive electrical
charge
have the same mass as
protons
have the smallest mass
are found in the same
numbers as electrons
Cambridge Lower Secondary Science 9 – Mary Jones, Diane Fellowes-Freeman and Michael Smyth © Cambridge University Press 2021
2
CAMBRIDGE LOWER SECONDARY SCIENCE 9 UNIT 2: PROPERTIES OF MATERIALS
Name ___________________________________
Date _____________
Worksheet 2.1B
Matching terms and facts
Place all of these facts into the correct place in the table on the next page. The facts may be used once,
more than once or not at all. Some have been done for you.
have the same mass as
neutrons
have a positive electrical
charge
have the smallest mass
have the same mass as
protons
have a negative electrical
charge
are found in the centre of
the atom
are not found in the
nucleus
have no electrical charge
are found in the same
numbers as electrons
are found in the nucleus
are found in the same
numbers as protons
are found in different shells
around the nucleus
the atomic number tells
you how many there are
the mass number is used to
calculate how many there
are
Cambridge Lower Secondary Science 9 – Mary Jones, Diane Fellowes-Freeman and Michael Smyth © Cambridge University Press 2021
3
CAMBRIDGE LOWER SECONDARY SCIENCE 9 UNIT 2: PROPERTIES OF MATERIALS
Protons
Neutrons
the atomic number tells
you how many there are
the mass number is used to
calculate how many there
are
have the same mass as
protons
Electrons
have the smallest mass
Cambridge Lower Secondary Science 9 – Mary Jones, Diane Fellowes-Freeman and Michael Smyth © Cambridge University Press 2021
4
CAMBRIDGE LOWER SECONDARY SCIENCE 9 UNIT 2: PROPERTIES OF MATERIALS
Name ___________________________________
Date _____________
Worksheet 2.1C
Matching terms and facts
Place all of these facts into the correct place in the table on the next page. The facts may be used once,
more than once or not at all.
have the same mass as
neutrons
have a positive electrical
charge
have the smallest mass
have the same mass as
protons
have a negative electrical
charge
are found in the centre of
the atom
are not found in the
nucleus
have no electrical charge
are found in the same
numbers as electrons
are found in the nucleus
are found in the same
numbers as protons
are found in different shells
around the nucleus
the atomic number tells
you how many there are
the mass number is used to
calculate how many there
are
Cambridge Lower Secondary Science 9 – Mary Jones, Diane Fellowes-Freeman and Michael Smyth © Cambridge University Press 2021
5
CAMBRIDGE LOWER SECONDARY SCIENCE 9 UNIT 2: PROPERTIES OF MATERIALS
Protons
Neutrons
Electrons
Cambridge Lower Secondary Science 9 – Mary Jones, Diane Fellowes-Freeman and Michael Smyth © Cambridge University Press 2021
6
CAMBRIDGE LOWER SECONDARY SCIENCE 9 UNIT 2: PROPERTIES OF MATERIALS
Name ___________________________________
Date _____________
Worksheet 2.2A
Elements in Group 1 and Group 8
1
The elements in Group 1 are sometimes called the alkali metals. They have some properties
in common.
Complete the statements below using the terms shown here. You may use each of these
terms once, more than once or not at all. Some of them have been done for you.
a
acid
calcium
down
easily
cut
hard
hydrogen
less
lithium
magnesium
more
not
oil
oxygen
potassium
reactive
sodium
soft
unreactive
up
The first three elements in Group 1 are
lithium
, _______________ and
_______________.
b The Group 1 elements are very
c
soft
. They can be _______________ with a knife.
The Group 1 elements are stored under _______________ because they are very
reactive
.
d When these elements react with water they form the gas _______________.
e
The elements are
more
reactive with water as you go _______________ the group.
Cambridge Lower Secondary Science 9 – Mary Jones, Diane Fellowes-Freeman and Michael Smyth © Cambridge University Press 2021
7
CAMBRIDGE LOWER SECONDARY SCIENCE 9 UNIT 2: PROPERTIES OF MATERIALS
2
The elements in Group 8 are called the inert or noble gases. Complete the statements below
using the terms shown here. You may use each of these terms once, more than once or not at all.
Some of them have been done for you.
argon
chlorine
darker
down
eight
gases
heavier
helium
larger
less
lighter
liquids
more
neon
one
reactive
full
smaller
solids
unreactive
up
a
The first three elements in Group 8 are
argon
helium
, _______________ and
.
b The elements in this group are all _______________.
c
The atoms get
larger
and _______________ as you go
down
the group.
d The elements in this group are _______________ and do not form compounds with other
elements.
e
The elements in this group have _______________ outer electron shells.
Cambridge Lower Secondary Science 9 – Mary Jones, Diane Fellowes-Freeman and Michael Smyth © Cambridge University Press 2021
8
CAMBRIDGE LOWER SECONDARY SCIENCE 9 UNIT 2: PROPERTIES OF MATERIALS
Name ___________________________________
Date _____________
Worksheet 2.2B
Elements in Group 1 and Group 8
1
The elements in Group 1 are sometimes called the alkali metals. They have some properties
in common.
Complete the statements below using the terms shown here. You may use each of these
terms once, more than once or not at all. Some of them have been done for you.
a
acid
calcium
down
easily
cut
hard
hydrogen
less
lithium
magnesium
more
not
oil
oxygen
potassium
reactive
sodium
soft
unreactive
up
The first three elements in Group 1 are
lithium
, _______________ and
_______________.
b The Group 1 elements are very _______________. They can be _______________ with a knife.
c
The Group 1 elements are stored under _______________ because they are very
_______________.
d When these elements react with water, they form the gas _______________.
e
The elements are
more
reactive with water as you go _______________ the group.
Cambridge Lower Secondary Science 9 – Mary Jones, Diane Fellowes-Freeman and Michael Smyth © Cambridge University Press 2021
9
CAMBRIDGE LOWER SECONDARY SCIENCE 9 UNIT 2: PROPERTIES OF MATERIALS
2
The elements in Group 8 are called the inert or noble gases. Complete the statements below
using the terms shown here. You may use each of these terms once, more than once or not at all.
Some of them have been done for you.
a
argon
chlorine
darker
down
eight
gases
heavier
helium
larger
less
lighter
liquids
more
neon
one
reactive
full
smaller
solids
unreactive
up
The first three elements in Group 8 are
helium
, _______________ and
_______________.
b The elements in this group are all _______________.
c
The atoms get
larger
and _______________ as you go _______________ the group.
d The elements in this group are _______________ and do not form compounds with other
elements.
e
The elements in this group have _______________ outer electron shells.
Cambridge Lower Secondary Science 9 – Mary Jones, Diane Fellowes-Freeman and Michael Smyth © Cambridge University Press 2021
10
CAMBRIDGE LOWER SECONDARY SCIENCE 9 UNIT 2: PROPERTIES OF MATERIALS
Name ___________________________________
Date _____________
Worksheet 2.2C
Elements in Group 1 and Group 8
1
The elements in Group 1 are sometimes called the alkali metals. They have some properties
in common.
Complete the statements below using the terms shown here. You may use each of these
terms once, more than once or not at all.
a
acid
calcium
down
easily
cut
hard
hydrogen
less
lithium
magnesium
more
not
oil
oxygen
potassium
reactive
sodium
soft
unreactive
up
The first three elements in Group 1 are _______________, _______________ and
_______________.
b The Group 1 elements are very _______________. They can be _______________ with a knife.
c
The Group 1 elements are stored under _______________ because they are very
_______________.
d When these elements react with water they form the gas _______________.
e
The elements are _______________ reactive with water as you go _______________ the group.
Cambridge Lower Secondary Science 9 – Mary Jones, Diane Fellowes-Freeman and Michael Smyth © Cambridge University Press 2021
11
CAMBRIDGE LOWER SECONDARY SCIENCE 9 UNIT 2: PROPERTIES OF MATERIALS
2
The elements in Group 8 are called the inert or noble gases. Complete the statements below using
the terms shown here. You may use each of these terms once, more than once or not at all.
argon
chlorine
darker
down
eight
gases
heavier
helium
larger
less
lighter
liquids
more
neon
one
reactive
full
smaller
solids
unreactive
up
a
The first three elements in Group 8 are _______________, _______________ and
_______________
b The elements in this group are all _______________.
c
The atoms get _______________ and _______________ as you go _______________ the group.
d The elements in this group are _______________ and do not form compounds with other
elements.
e
The elements in this group have _______________ outer electron shells.
Cambridge Lower Secondary Science 9 – Mary Jones, Diane Fellowes-Freeman and Michael Smyth © Cambridge University Press 2021
12
CAMBRIDGE LOWER SECONDARY SCIENCE 9 UNIT 2: PROPERTIES OF MATERIALS
Name ___________________________________
Date _____________
Worksheet 2.3A
Ionic and covalent bonds
1
What is the difference between an ionic bond and a covalent bond?
The bond that has atoms sharing electrons is a _______________ bond whereas _______________
bonds involve elements losing or gaining electrons.
2
Which type of elements form ionic bonds and which type of elements form covalent bonds?
When a metal atom joins with a non-metal atom, the type of bond formed is _______________.
When non-metal atoms join together, the type of bond formed is _______________.
3
Which of the following are symbols for atoms, and which are symbols for molecules?
Some have been done for you.
Na
C
N2
H2O
Cl
Cl2
Atoms
Molecules
C; Cl
N2; Cl2
N
O
CO2
Cambridge Lower Secondary Science 9 – Mary Jones, Diane Fellowes-Freeman and Michael Smyth © Cambridge University Press 2021
13
CAMBRIDGE LOWER SECONDARY SCIENCE 9 UNIT 2: PROPERTIES OF MATERIALS
4
Draw a diagram to show the structure of an atom of lithium and an ion of lithium.
Give the symbols for the lithium atom and lithium ion.
The atomic number of lithium is 3 and the mass number is 7.
The outlines have been drawn for you.
5
Complete the diagram to show the structure of an atom of nitrogen.
The atomic number of nitrogen is 7 the mass number is 14.
6
Complete the diagram to show the structure of an atom of hydrogen. The atomic number of hydrogen
is 1, and the mass number is 1.
7
The compound ammonia has the formula NH3.
Complete the diagram to show the structure of a molecule of ammonia.
Cambridge Lower Secondary Science 9 – Mary Jones, Diane Fellowes-Freeman and Michael Smyth © Cambridge University Press 2021
14
CAMBRIDGE LOWER SECONDARY SCIENCE 9 UNIT 2: PROPERTIES OF MATERIALS
Name ___________________________________
Date _____________
Worksheet 2.3B
Ionic and covalent bonds
1
What is the difference between an ionic bond and a covalent bond?
(Which type of bond involves sharing electrons?)
________________________________________________________________________________
________________________________________________________________________________
2
Which type of elements form ionic bonds and which type of elements form covalent bonds?
(Think about metals and non-metals.)
________________________________________________________________________________
________________________________________________________________________________
3
Which of the following are symbols for atoms, and which are symbols for molecules?
Two have been done for you.
Na
C
N2
H2O
Cl
Cl2
Atoms
Molecules
C
N2
N
O
CO2
Cambridge Lower Secondary Science 9 – Mary Jones, Diane Fellowes-Freeman and Michael Smyth © Cambridge University Press 2021
15
CAMBRIDGE LOWER SECONDARY SCIENCE 9 UNIT 2: PROPERTIES OF MATERIALS
4
Draw a diagram to show the structure of an atom of lithium and an ion of lithium.
Give the symbols for the lithium atom and lithium ion.
The atomic number of lithium is 3 and the mass number is 7.
5
Draw a diagram to show the structure of an atom of nitrogen.
The atomic number of nitrogen is 7 the mass number is 14.
Cambridge Lower Secondary Science 9 – Mary Jones, Diane Fellowes-Freeman and Michael Smyth © Cambridge University Press 2021
16
CAMBRIDGE LOWER SECONDARY SCIENCE 9 UNIT 2: PROPERTIES OF MATERIALS
6
Draw a diagram to show the structure of an atom of hydrogen.
The atomic number of hydrogen is 1 and the mass number is 1
7
The compound ammonia has the formula NH3.
Complete the diagram to show the structure of a molecule of ammonia.
Cambridge Lower Secondary Science 9 – Mary Jones, Diane Fellowes-Freeman and Michael Smyth © Cambridge University Press 2021
17
CAMBRIDGE LOWER SECONDARY SCIENCE 9 UNIT 2: PROPERTIES OF MATERIALS
Name ___________________________________
Date _____________
Worksheet 2.3C
Ionic and covalent bonds
1
What is the difference between an ionic bond and a covalent bond?
________________________________________________________________________________
________________________________________________________________________________
2
Which type of elements form ionic bonds and which type of elements form covalent bonds?
________________________________________________________________________________
________________________________________________________________________________
3
Which of the following are symbols for atoms, and which are symbols for molecules?
Na
Atoms
C
N2
H2O
Cl
Cl2
N
O
CO2
Molecules
Cambridge Lower Secondary Science 9 – Mary Jones, Diane Fellowes-Freeman and Michael Smyth © Cambridge University Press 2021
18
CAMBRIDGE LOWER SECONDARY SCIENCE 9 UNIT 2: PROPERTIES OF MATERIALS
4
Draw a diagram to show the structure of an atom of lithium and an ion of lithium.
Give the symbols for the lithium atom and lithium ion.
5
Draw a diagram to show the structure of an atom of nitrogen.
6
Draw a diagram to show the structure of an atom of hydrogen.
7
The compound ammonia has the formula NH3. Draw a diagram to show the structure
of a molecule of ammonia.
Cambridge Lower Secondary Science 9 – Mary Jones, Diane Fellowes-Freeman and Michael Smyth © Cambridge University Press 2021
19