Particle Model & Pressure (AQA GCSE Physics Combined Science): Flashcards
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Practise the cards
11 cards from this deck
Cause of gas pressure
Cause of gas pressure
Particles constantly moving and hitting container walls
How gas particles move inside container
How gas particles move inside container
Randomly in all directions
What gas particle collisions with walls create
What gas particle collisions with walls create
Pressure
Effect of increasing temperature on gas pressure
Effect of increasing temperature on gas pressure
Pressure increases (particles move faster, hit walls harder)
Effect of adding more gas on pressure
Effect of adding more gas on pressure
Pressure increases (more collisions)
Effect of making container smaller on pressure
Effect of making container smaller on pressure
Pressure increases (more frequent collisions)
What gas molecules gain when heated
What gas molecules gain when heated
Kinetic energy
What happens when gas in balloon is heated
What happens when gas in balloon is heated
Balloon expands (pressure stays roughly same)
Meaning of random motion in gases
Meaning of random motion in gases
Cannot predict where single particle will go
What can be predicted about gas particles
What can be predicted about gas particles
Only average behaviour of all particles
Direction gas pressure acts on wall surface
Direction gas pressure acts on wall surface
At right angles to the wall