1) Which of the following is not a state of matter? a) Solid b) Liquid c) Energy d) Gas 2) When water freezes, it changes from a — a) Gas to liquid b) Liquid to solid c) Solid to gas d) Gas to solid 3) Which state of matter has no definite shape but has definite volume? a) Solid b) Liquid c) Gas d) Plasma 4) Which of these is a compound? a) Oxygen b) Hydrogen c) Water d) Iron 5) Which of the following is a mixture? a) Salt b) Sugar c) Air d) Water

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