States of Matter (OCR GCSE Chemistry A, Combined (Gateway Science Suite)): Flashcards
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Practise the cards
13 cards from this deck
Particle arrangement in solids
Particle arrangement in solids
Very close, regular pattern, vibrate around fixed position
Particle arrangement in liquids
Particle arrangement in liquids
Close, randomly arranged, move around each other
Particle arrangement in gases
Particle arrangement in gases
Far apart, randomly arranged, move quickly in all directions
Why are solids incompressible?
Why are solids incompressible?
Particles very close together, no space to move closer
Why are gases compressible?
Why are gases compressible?
Large spaces between particles, can be pushed closer
What is sublimation?
What is sublimation?
Direct change from solid to gas without liquid stage
Give an example of sublimation
Give an example of sublimation
Solid carbon dioxide (dry ice)
Energy change during melting & boiling
Energy change during melting & boiling
Energy transferred TO substance by heating
Evaporation vs boiling location
Evaporation vs boiling location
Evaporation: surface only; Boiling: throughout liquid
Energy change during condensing & freezing
Energy change during condensing & freezing
Energy transferred FROM substance to surroundings
Effect of stronger forces between particles
Effect of stronger forces between particles
More energy needed, higher melting & boiling points
State when temperature melting point
State when temperature melting point
Solid
State when temperature boiling point
State when temperature boiling point
Gas