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Science
Patterns of Reactivity
Metals in water
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Cards (5)
The general equation for metals in water:
M
e
t
a
l
+
Metal\ +
M
e
t
a
l
+
W
a
t
e
r
→
M
e
t
a
l
H
y
d
r
o
x
i
d
e
+
\ Water\ \rightarrow\ Metal\ Hydroxide\ +
Wa
t
er
→
M
e
t
a
l
Hy
d
ro
x
i
d
e
+
H
y
d
r
o
g
e
n
\ Hydrogen
Hy
d
ro
g
e
n
How did you know a reaction had happened?
Look for
bubbling
/
fizzing
or
effervescing
or change in
colour
/
smell
Which metals did not react?
Copper
,
zinc
and
aluminium
What’s is the word equation for potassium and water?
P
o
t
a
s
s
i
u
m
+
Potassium\ +
P
o
t
a
ss
i
u
m
+
W
a
t
e
r
→
P
o
t
a
s
s
i
u
m
H
y
d
r
o
x
i
d
e
+
\ Water\ \rightarrow\ Potassium\ Hydroxide\ +
Wa
t
er
→
P
o
t
a
ss
i
u
m
Hy
d
ro
x
i
d
e
+
H
y
d
r
o
g
e
n
\ Hydrogen
Hy
d
ro
g
e
n
What's the balanced symbol equation for the reaction between Potassium and water?
2
K
+
2K\ +
2
K
+
2
H
2
O
→
2
K
O
H
+
\ 2H_2O\ \rightarrow\ 2KOH\ +
2
H
2
O
→
2
K
O
H
+
H
2
\ H_2
H
2
