Science 5 Test: Materials

Chocolate _______ when it is heated.

• melts

• reacts

• dissolves

• disappears

If you put water in the freezer, it becomes _______ .

• atom

• liquid

• solid

• element

Salt ______ when you stir it into water.

• reverses

• reacts

• dissolves

_________ candle wax makes carbon dioxide and water vapour.

• Reversing

• Burning

• Mixing

Melting, freezing, mixing and dissolving are _______ changes.

• physical

• chemical

• mixing

• atom

Burning and setting are examples of a _______ change.

• atom

• physical

• chemical

• reversing

The smallest unit that makes up an element is:

Separating solid suspensions from liquids is called filtration.

• TRUE

• FALSE

Salt dissolves in water to make a mixture.

• TRUE

• FALSE

Separating salt from water by heating is called evaporation.

• TRUE

• FALSE