1.1 We can change the STATE of water from a
LIQUID to a SOLID by freezing it and making
ice. What happens when we heat it? Does it
2.1 We can BEND, TWIST, PRESS and STRECH
plasticine. The plasticine STAYS IN THE
NEW SHAPE when we stop applying force.
What happens to a rubber band when we
strech it? What happens when we let go?
3.1 When we BURN paper, there is a reaction
called COMBUSTION. The paper changes into
different matter and becomes ASH. Do you
think it is possible to change the ash back
4.1 If you leave your bike outside, the metal
starts outside in the rain for a long time, the
metal starts to turn BROWN and rough. This
isn't dirt - It's called rust. The metal reacts
with WATER and AIR (Oxigen) and
changesinto differnt matter
5 Chemichal changes
5.1 Sometimes matter REACTS with AIR,
WATER and OTHER ELEMENTS. These
reactions cause the matter to
CHANGE INTO DIFFERENT MATTER.
These reactions are called
6 Physical changes
6.1 Matter has different PROPERTIES,
like SHAPE, SIZE and STATE. These
propeties can change. These changes
are called PHYSICAL CHANGES.
materials in a
7.1 Do you think it is possible to
SEPARATE the different materials in a
mixture? We can separate some
materials in a mixture by SIEVING,
FILTERING or EVAPORATING.
8.1 A MIXTURE is something that
contains TWO OR MORE
DIFFERENT MATERIALS. Almost
everything around us is a
mixture, including the air we
breathe. In some mixtures we
can see the different materials;
in others it is imposibleto see
the different materials.