Unit 2 – Matter & The Periodic Table
1
2
3
4
5
6
7
8
9
10
11
13
12
14
15
16
17
18
19
Across
Down
3 arrangement of elements in order of their atomic
numbers in groups and periods
4 form of matter that has no definite shape or volume
9 smallest unit of an element that maintains its properties
10 subatomic particle with positive charge
11 horizontal row of elements that increases by atomic
number from left to right
13 sum of all the protons and neutrons in the nucleus
16 state of meter that has a definite volume but not shape
17 conducts heat and electricity poorly
18 a vertical column of elements in the periodic table that
share similar properties
19 an atom's central region made of protons and neutrons
1 subatomic particle with negative charge
2 has properties of both metals and nonmetals
5 abbreviation of the name of an element
6 number of protons in the nucleus of an atom; or electrons
7 average of all the masses of naturally occurring isotopes of an
element
8 region around nucleus where electrons are likely to be found
12 subatomic particle that has no charge and located in nucleus
14 state of matter with a fixed volume and shape
15 shiny and conducts heat and electricity well
gas
atom
solid
atomic mass
nucleus
nonmetal
periodic table
electron
mass number
neutron
chemical symbol
atomic number
proton
group
electron cloud
liquid
metal
period
metalloid
L
R
W
L
X
B
F
V
X
W
E
W
W
O
E
M
X
U
O
K
Z
O
L
D
O
M
E
T
A
L
U
P
Q
Z
M
J
W
F
B
S
T
Z
Q
Y
A
X
D
Y
B
C
H
D
I
U
Q
I
L
E
Y
Y
O
H
P
N
Y
G
V
B
S
E
D
D
M
O
O
T
X
T
F
E
T
G
Z
G
D
J
Z
V
Y
W
Q
U
A
J
L
S
Y
F
I
X
O
X
D
A
L
R
V
N
I
E
V
V
V
L
P
Q
G
A
U
B
S
F
H
J
S
M
L
M
U
E
G
S
L
M
K
D
S
Z
O
M
T
E
Z
A
L
W
I
J
P
L
D
E
P
L
C
P
O
C
V
Y
U
C
L
E
L
K
U
I
A
G
S
K
O
T
T
I
G
A
W
T
S
T
M
O
S
W
M
C
A
A
Q
X
C
A
Q
I
S
G
W
T
F
M
B
D
R
Q
G
S
F
N
U
U
B
T
R
T
I
H
D
O
P
S
U
J
O
O
U
M
B
O
W
Y
O
N
M
E
J
O
E
T
M
Q
N
N
C
R
M
O
T
A
R
V
J
J
N
N
P
W
A
J
P
M
F
D
E
N
X
F
I
Z
O
H
V
V
B
O
L
V
Z
M
E
D
S
R
E
I
V
M
H
R
W
K
V
F
B
T
C
V
O
K
F
Y
A
Y
R
Y
S
N
R
C
P
H
C
C
E
F
H
G
V
X
O
C
V
L
L
M
M
E
I
T
N
U
I
M
D
J
C
F
H
B
B
D
W
Q
L
N
D
Y
Q
L
F
Y
O
X
U
S
O
A
E
H
G
Z
L
T
M
F
O
I
Y
H
Y
C
B
R
P
E
D
P
M
W
D
S
Y
S
K
Y
V
A
D
U
O
L
C
N
O
R
T
C
E
L
E
O
B
M
I
S
Y
T
R
L
B
A
M
G
N
D
R
N
S
G
A
S
A
V
U
W
E
R
C
R
N
W
Y
Q
R
J
C
R
J
C
R
J
E
M
D
L
D
R
B
Z
R
N
T
B
V
O
E
V
C
D
D
O
Y
L
I
D
B
U
K
J
F
N
V
X
X
J
A
Q
F
D
A
X
S
C
E
U
H
W
U
M
H
B
T
Q
P
G
B
V
I
C
B
X
I
U
P
V
G
Z
R
P
U
F
T
R
O
K
M
R
B
C
O
W
Z
Q
L
H
N
H
atom
atomic mass
atomic number
chemical symbol
electron
electron cloud
gas
group
liquid
mass number
metal
metalloid
neutron
nonmetal
nucleus
period
periodic table
proton
solid
Z
R
N
L
W
L
Z
C
X
H
B
T
F
Y
O
M
N
L
E
T
E
G
V
J
A
V
L
N
Q
X
G
A
J
A
E
R
A
M
C
N
W
H
N
P
S
W
I
G