Internal Energy & Energy Transfers (AQA GCSE Physics Combined Science): Flashcards
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What is latent heat?
What is latent heat?
Energy required to change the state of a substance
What is required when a change of state happens?
What is required when a change of state happens?
Energy
What happens to temperature during a change of state?
What happens to temperature during a change of state?
No change in temperature
Internal energy during heating changes of state
Internal energy during heating changes of state
Increases
Why doesn't temperature change during a change of state?
Why doesn't temperature change during a change of state?
Energy is used to break bonds between particles
Internal energy during cooling changes of state
Internal energy during cooling changes of state
Decreases
Why is energy released during cooling changes?
Why is energy released during cooling changes?
To make bonds between particles
What does latent heat change?
What does latent heat change?
State only, not temperature
Examples of heating changes of state
Examples of heating changes of state
Boiling and melting
Examples of cooling changes of state
Examples of cooling changes of state
Condensation and freezing