First Children Encyclopedia

(Marvins-Underground-K-12) #1

227


Freezing


Icicles are spikes of ice


that form when dripping


water freezes. You often


see them on trees in


winter. If water keeps


dripping down and


freezing, the icicle will


get longer and longer.


Changing states


Melting
chocolate

Because the warmth of your mouth makes it melt.


Melting
When you don’t eat your
ice cream quickly enough,
it melts and changes from a
solid to a liquid! Chocolate
melts too, and makes
your hands all sticky.
Most solids will melt if the
temperature is high enough.

Evaporating
In the open air, water slowly turns into
vapour – this is called evaporation.
Wet clothes dry on a line because the
water they hold evaporates.

Washing dries faster on a hot day,
when heat turns water into vapour
very quickly.

M


m


m


m


...


fr


ozen (^) fr
u
it
(^) i
n
s
id
e
Become
an expert...
230-231 Molecules
232-233 Reactions
and changes

Free download pdf