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Atomic structure puzzles
Teaching notes
This resource consists of three puzzles, designed to challenge students at different levels.
These activities can be used for revision, for homework or to consolidate the work done
in a lesson.
The third activity includes the opportunity to use greater problem solving and thinking
skills. Students are asked to identify the strategies they have used. This could form part
of a discussion session of problem solving. The teacher should be able to link it to
scientific approaches to investigative/experimental work.
Answers provided on p.5.
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Page 1 of 5
Atomic structure puzzles
Atomic structure crossword 1
1
2
3
4
5
6
7
8
9
10
11
13
12
14
15
16
17
18
19
20
21
22
23
24
25
26
27
Clues across
A type of bond between atoms. Electrons are
shared.
Atoms are the b_____________ b_______ of
chemistry, as cells are to biology.
Consists of two or more atoms from different
elements, chemically bonded to each other.
Atoms with a full outer energy shell are described
as ………. .
Element with chemical symbol Mg.
27
15 The number of protons in the nucleus of an atom.
5
19 A particle that has almost no relative mass and a
6
A vertical column containing elements with similar
properties.
A chart in which all the elements are arranged according
to their number of protons.
Opposite charged particles from different atoms are
attracted and held together in this type of bonding.
Maximum number of electrons in the first energy level or
shell.
The central part of an atom.
20
10
Metal with chemical symbol Al.
12
Name given to the elements that all contain eight
electrons in their outer energy shell.
Element that has only one proton.
Element that has only two electrons.
3
7
8
9
11
21
Clues down
1
2
4
negative charge.
Two or more atoms joined together by a chemical
bond.
Compound with chemical symbol H2O.
22 Gas with chemical symbol O2.
23 A charged particle. Made when an atom gains or
13
14
24 Where the electrons are grouped in energy levels
16
25
17
loses an electron.
26
around an atom.
The smallest part of an element.
……… number = number of protons + number
of neutrons.
Element with chemical symbol Na.
18
Particles found in the nucleus of an atom but that have
no charge.
Particles found in the nucleus of an atom with relative
mass of 1 and a positive charge.
A substance that cannot be split into another by any
chemical means.
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Page 2 of 5
Atomic structure puzzles
Quick atomic structure crossword 2
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
Clues across
1
4
Metal that has the symbol Cu.
12 An atom has two protons, two electrons
and two neutrons. What is its atomic
mass?
Sodium, neon and chlorine are all examples
of ………… .
Clues down
6
Oxygen gas is composed of pairs of atoms
which are bonded together. This is known
as a …………. of oxygen.
1
What is made when atoms of different
elements join together to form a new
substance, e.g. water?
7
How many protons does magnesium have if
it has 12 electrons?
2
A particle that has a relative mass of 1 and
no charge.
8
A particle that has a relative mass of 1 and a 3
positive charge.
Name for the central part of an atom.
9
Where electrons are found around the
nucleus.
A particle that has almost no relative mass
and a negative charge.
5
10 Chemical substance that has the symbol C.
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11 The smallest parts of elements.
Page 3 of 5
Atomic structure puzzles
Problem solving crossword
G
R
P
C O V A L E N T
U
R
P
B U I L D I
O
C O M P O U N D
I
A
C
L
H
H
T
U
Y
E
A T O M
D
E
L
B
I
R
L
I
L
N
M O L E C U L E
I
G
M
M
U
E
E
M
N
A
N
T O M
I
T
O
W
N G B L O C K S
I
C
S T A B
I
M A G N
O
C N U M B
E
L
U
E
T
G
R
W A
O
S
N
M A S S
E S I
N
U
C
L E
E
U M
S
E R
P
R
L E C T R O N S
T
T E R
O X Y G E N
N
E
S O D I
S H E L L S
U M
Clues (in alphabetica order by answer)
A
B
C
D
E
F
G
H
I
J
K
L
M
N
Name given to the elements that all contain eight
electrons in outer energy shell. (2 words 5, 5)
Atoms are the b_____________ b_______ of
chemistry, as cells are to biology. (2 words 8, 6)
Particles found in the nucleus of an atom with
relative mass of 1 and a positive charge. (7)
Atoms with a full outer energy shell are described
as ………. . (6)
Element with chemical symbol Mg. (9)
O
A chart in which all the elements are arranged
according to their number of protons (2 words
8, 5)
The smallest part of an element. (4)
T
Maximum number of electrons in the first energy level or
shell. (3)
U
The central part of an atom. (7)
V
Metal with chemical symbol Al. (9)
W
Where the electrons are grouped in energy levels
around an atom. (6)
Element that has only one proton. (8)
A particle that has almost no relative mass and a negative
charge. (9)
A type of bond between atoms. Electrons are shared.
(8)
A substance that cannot be split into another by any
chemical means. (7)
Particles found in the nucleus of an atom but that
have no charge. (8)
Compound with chemical symbol H2O. (5)
Gas with chemical symbol O2. (6)
A charged particle. Made when an atom gains or
loses an electron. (3)
The quantity of protons in the nucleus of an atom.
(2 words 6, 6)
……… number = number of protons + number
of neutrons. (4)
Element with chemical symbol Na. (6)
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P
Q
R
S
X
Y
Z
Aa
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Opposite charged particles from different atoms are
attracted and held together in this type of bonding. (5)
Two or more atoms joined together by a chemical bond.
(8)
A vertical column containing elements with similar
properties. (5)
Consists of two or more atoms from different elements,
chemically bonded to each other. (8)
Element that has only two electrons. (6)
Page 4 of 5
Atomic structure puzzles
Answers to Atomic structure crossword 1 and Problem solving crossword
G
C
M
I
O
O
H
Y
D
R
O
G
E
N
R
P
C O V A L E N T
U
R
P
B U I L D I
O
M P O U N D
I
A
C
L
H
T
U
E
A T O M
E
L
B
I
L
I
L
N
L E C U L E
I
M
M
U
E
M
N
A T O M
I
T
O
W
N G B L O C K S
I
C
S T A B
M A G N
O
I C N U M B
E
L
U
E
T
G
R
W A
O
S
N
E
M A S S
S
E S I
N
U
C
L E
E
U M
S
E R
P
R
L E C T R O N S
T
T E R
O X Y G E N
N
S H E L L S
O D I U M
Answer to Quick atomic structure crossword 2
P
C O P P E R
N
O
N
E L E M E N T S
E
U
U
P
L
C
T
M O L E C U L E
L
R
U
C
T W E L V E
R O T O N
T
U
N
D
E N E R G Y L E V E L S
O
C A R B O N
T
F O U R
M
S
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