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SCH4U Chemistry

Chapter 5: Energy Changes

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SCH4U Chemistry

Exothermic Process

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Exothermic Process

  • Heat leaves the system; surroundings gain heat.
  • ΔH is negative.
  • Products have lower enthalpy than reactants.
  • Energy appears on the product side of a thermochemical equation.
  • Examples: freezing, condensation, combustion.