Lesson 1.3
Changing in Matter       

Key Concepts
  • What is a physical change?
  • What is a chemical change?
  • How are changes in matter related to changes in energy?
Vocabulary
  • physical change
  • chemical change
  • law of conservation of mass
  • energy
  • temperature
  • thermal energy
  • endothermic change
  • exothermic change
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