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Week 6 Vocabulary

Across
matter is neither created nor destroyed during a chemical change
a substance that is produced during a chemical reaction
a number written before a chemical formula to show how many atoms or molecules of that substance are involved in the reaction
Down
describes a chemical reaction using chemical formulas, subscripts, and coefficients
a substance that is present at the beginning of a chemical reaction
tells how many atoms of that element you have (Can't change from one side to the other)