____________________
-
If
we
cool
water
vapour
,
it
condenses
into
a
liquid
.
____________________
-
If
we
freeze
water
,
the
liquid
changes
into
a
solid
called
ice
.
____________________
-
If
we
heat
ice
,
it
melts
and
changes
back
into
a
liquid
.
____________________
-
If
we
heat
water
,
the
liquid
changes
into
a
gas
called
water
vapour
.
