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Type: Multiple-Choice
Category: Reactions
Level: Grade 11
Score: 1
Author: AmandaPainter
Last Modified: 2 months ago

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Grade 11 Reactions

Which of the following must always be true for any kind of chemical reaction?
  1. The masses of the products and the reactants are equal.
  2. The mass of the products is greater than that of the reactants.
  3. The number of atoms in the reactants must change when products are formed.
  4. The reactants require the absorption of heat for a reaction to occur.
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