Physical and Chemical Changes

AP Chemistry· difficulty 1/5

A balanced chemical equation reflects which conservation law(s)?

  • A

    All three (mass, atoms, charge)

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  • B

    Atoms only

  • C

    Mass and electric charge

  • D

    Mass and atoms

Explanation

Atoms: each element appears in equal numbers on both sides. Mass: follows from atom conservation. Charge: net charge of both sides must match.

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