Exercise condition:

Read the statement and select the correct answer:
1. Anne, in her craft class, made a doll by mixing Plaster of Paris (POP) and water.
Statement 1: The setting of a doll is a reversible change.
Statement 2: The setting of a doll is an irreversible change.
2. Salt dissolved in water can be separated from its solution because it is a change that can be
Statement 1: Reversed by heating and melting of salt.
Statement 2: Reversed by evaporation.
3. Decaying of food is considered a chemical change because
Statement 1: It is possible to get original food from spoiled food.
Statement 2: It is a permanent, irreversible change.
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