Internal Energy & Energy Transfers (OCR GCSE Physics A, Combined (Gateway Science Suite)): Flashcards
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Practise the cards
15 cards from this deck
What is internal energy?
What is internal energy?
Energy stored by particles within a system
What two forms of energy make up internal energy?
What two forms of energy make up internal energy?
Kinetic energy and potential energy
What does the kinetic energy in internal energy represent?
What does the kinetic energy in internal energy represent?
Vibration of atoms
Where is the potential energy in internal energy?
Where is the potential energy in internal energy?
Between the particles
Effect of heating on particles
Effect of heating on particles
Increases the energy the particles have
Effect of heating on internal energy
Effect of heating on internal energy
Increases internal energy
Two effects of increasing internal energy
Two effects of increasing internal energy
Raises temperature OR produces change of state
Complete definition of internal energy
Complete definition of internal energy
Total kinetic energy and potential energy of all particles in a system
State change: Solid to Liquid
State change: Solid to Liquid
Melting
State change: Liquid to Solid
State change: Liquid to Solid
Freezing
State change: Liquid to Gas
State change: Liquid to Gas
Boiling
State change: Gas to Liquid
State change: Gas to Liquid
Condensation
State change: Solid to Gas
State change: Solid to Gas
Sublimation
What are three properties of changes of state?
What are three properties of changes of state?
Mass conserved, physical changes, reversible
What is evaporation?
What is evaporation?
Liquid turns to gas on surface only