nD0evorheingky
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Which statement describes a chemical change?. 1 alcohol evaporates. 2. water vapor forms snowflakes. 3. table salt is crushed into powder. 4. glucose (C6H12O6) and oxygen produce CO2 and H20.

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Johhnyboii
(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).
taskmasters
"glucose (C6H12O6) and oxygen produce CO2 and H20" is the statement among the statements given that describes a chemical change. During a chemical change, normally new substances are produced. The correct option among all the options that are given in the question is the last option or option "4".

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