Revision Unit 3

Which of the following is a reversible change?

• Freezing water

• Heating clay

• cooking an egg

• Baking a cake

Which of these are liquid?

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Which of the following is an irreversible change?

• melting ice cream

• cooling butter

• heating water

• heating clay to make pots

What can we say about glass?

• It is see-through.

• It is bendy.

• It doesn't break easily.

• It is soft.

Which of these objects dissolve in water?

• candle

• table

• salt

• spoon

Which of the following objects will melt if you put it under the heat of the sun?

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Oxygen is not solid. It is a ___________.

Which of the following can stretch and go back to its original form?

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When we heat chocolate, it will ____________.

What 2 materials is this notebook is made of?

• Paper

• metal

• cloth

• rock

• clay