Heating & Cooling Graphs (AQA GCSE Physics Combined Science): Flashcards

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Heating & Cooling Graphs
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What does a heating graph show?

Temperature vs time as substance heats up

What does a cooling graph show?

Temperature vs time as substance cools down

Melting point

Temp where solid turns to liquid

Melting point of ice

0°C0°C

Boiling point

Temp where liquid turns to gas

Boiling point of water

100°C100°C

Straight lines on heating/cooling graphs mean

Changing state, no temp change

Condensation point

Temp where gas turns to liquid

Freezing point

Temp where liquid turns to solid

State changes that absorb energy

Melting and evaporating

State changes that release energy

Freezing and condensing

Sublimation

Solid goes straight to gas

Example of sublimation

Dry ice (solid CO2CO_2)

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