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Type: Multiple-Choice
Category: Macromolecules
Level: Grade 9
Score: 2
Author: JVance
Last Modified: 5 months ago

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Macromolecules Question

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Grade 9 Macromolecules

The energy needed to start a chemical reaction is called the
  1. lightning.
  2. heat energy.
  3. reaction energy.
  4. activation energy.
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