What Triggers a Chemical Reaction?

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Chemical reactions are happening all around us every second of every day, but what exactly causes these changes to occur? Using easy-to-understand analogies, this video explains how the concepts of enthalpy and entropy determine the ways elements and compounds interact with one another to create new substances.

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CCSS: Adaptable
NGSS: Adaptable
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Instructional Ideas
  • Watch this video during an introductory lesson on chemical reactions
  • Following a viewing of this video, have students observe different examples of exothermic and endothermic reactions
  • Pupils can watch this video and then complete the assessment as a homework assignment in your flipped classroom
Classroom Considerations
  • This resource is only available on an unencrypted HTTP website. It should be fine for general use, but don’t use it to share any personally identifiable information
  • Fun animations help to both engage viewers and visually support the scientific content being presented
  • Key vocabulary terms are displayed on the screen during the video
  • A short assessment is included with four multiple choice and three free-response questions
  • None