What must occur in order for a matter to change states? A: Heat must be added or removed B: A chemical change must occur C: Other substances must be added D: The temperature must change
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During a change in the state of matter A: Heat must be added or removed.
This statement can be illustrated based on the explanations of phase changes:
Melting - Solid to Liquid
Explanation: Heat is added to the solid as it melts.
Freezing - Liquid to Solid
Explanation: Heat is removed from the solid as it freezes.
Evaporation - Liquid to Gas
Explanation: Heat is added to the liquid as it evaporates.
Condensation - Gas to Liquid
Explanation: Heat is removed from the Gas as it condenses.
Sublimation - Solid to gas
Explanation: Heat is added to the solid as it sublimates.
Deposition - Gas to Solid
Explanation: Heat is removed from the gas as it deposits.