Changes: Reversible and Irreversible

Front

Which of the following is an example of a reversible change? Burning paper, Melting ice, Cooking an egg, Rusting iron

Back

Melting ice

Front

What happens when you dissolve salt in water?

Back

The salt can be recovered by evaporating the water.

Front

Which process is irreversible? Freezing water, Condensing steam, Baking a cake, Melting wax

Back

Baking a cake

Front

Is melting chocolate and then letting it harden an irreversible change?

Back

False

Front

Burning wood creates ash and smoke, which cannot turn back into wood.

Back

True

Front

Boiling water to form steam is a reversible change.

Back

True