1) When ice melts into water, what type of change is it? a) Irreversible b) Reversible 2) A piece of paper is burned and turns into ash. What type of change is this? a) Reversible b) Irreversible 3) Chocolate melts when heated and becomes solid again when cooled. What type of change is this? a) Irreversible b) Reversible 4) Which of the following is an example of an irreversible change? a) Melting butter b) Dissolving sugar in tea c) Cooking an egg 5) Which change cannot be undone? a) Melting wax b) Freezing orange juice c) Freezing water d) Burning paper

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