When
you
heat
solid
water
,
it
changes
into
a
liquid
.
Water
____________________
.
When
you
heat
liquid
water
,
it
changes
into
water
vapour
.
Water
____________________
.
When
you
cool
liquid
water
,
it
changes
into
a
solid
.
Water
____________________
.
When
you
cool
water
vapour
,
it
changes
into
a
liquid
.
Water
____________________
.