1) 1. Which is the chemical change? a) Water turning to steam when boiled b) An ice cube melting c) Wood burning d) Melting chocolate 2) Which is the physical change? a) Process of digestion b) Melting candle wax c) Acid and metal reacting d) Bread being toasted 3) Which is true about physical changes? a) They are always reversible b) They are usually easily reversible c) The changes are usually permanent and so irreversible d) New substances are made 4) Which is true about chemical changes? a) They are always reversible b) They are usually easily reversible c) The changes are usually permanent and so irreversible d) No new substances are made

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