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14 February, 07:56

Which statement describes a chemical change? (1) Alcohol evaporates. (2) Water vapor forms snowflakes. (3) Table salt (NaCl) is crushed into powder. (4) Glucose (C6H12O6) and oxygen produce CO2 and H20.

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  1. 14 February, 09:18
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    (4) a chemical change results in the formation of new chemical substances, breaking and creating bonds between atoms. (4) is the only option were you end with different chemical substances (carbon dioxide and water) to what you started with (glucose and oxygen).
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Home » Chemistry » Which statement describes a chemical change? (1) Alcohol evaporates. (2) Water vapor forms snowflakes. (3) Table salt (NaCl) is crushed into powder. (4) Glucose (C6H12O6) and oxygen produce CO2 and H20.
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