Let’s remember

!!!

1. Matter can be made from:

PlasticGlassPaperWood

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2. MATERIALS PROPERTIES

Smooth-roughSoft- hard

Transparent- opaqueRigid- flexible

Waterproof- absorbentFloat- sink

Which is transparate?

Whis is rigid?

Whis is waterproof?

Which thing can sink?

3. Heating and cooling

Some materials change when we heat or cool them.

These changes can be REVERSIBLE or IRREVERSIBLE

Which of these might be reversible?

TASKNumber the pictures.

This is reversible or irreversible change?

4. Things change shape

StretchSqueeze

BendForce

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5. Things can move