Mr. Weiler’s Science Lab

UNIT 3 · STUDY GUIDE QUESTION 21

Chemical-reaction vocabulary

Define chemical reaction, endothermic, exothermic, reactant, product, and precipitate.

Schematic reaction: AB + C → AC + BABCBefore: A = 1, B = 1, C = 1After: A = 1, B = 1, C = 1Bonds change. The same atoms remain inside the closed system.SIMPLIFIED SCIENTIFIC MODEL · TIME COMPRESSED · NOT TO SCALE

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