Kinetic Theory (Edexcel GCSE Physics Combined Science): Flashcards
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14 cards from this deck
4 interconnected variables in gases
4 interconnected variables in gases
Pressure, temperature, volume, kinetic energy
Relationship between temp & pressure in a gas
Relationship between temp & pressure in a gas
Directly related
Energy transfer when gas temp increases
Energy transfer when gas temp increases
Heat energy transfers to kinetic energy of particles
Equation for kinetic energy
Equation for kinetic energy
Effect of increased kinetic energy on particle speed
Effect of increased kinetic energy on particle speed
Speed increases
Effect of temp on avg particle speed
Effect of temp on avg particle speed
Average speed rises with temperature
Effect of increased speed on collisions
Effect of increased speed on collisions
More frequent collisions with walls & each other
What causes gas pressure?
What causes gas pressure?
Total force by particles on container area
Effect of temp increase on pressure (constant vol)
Effect of temp increase on pressure (constant vol)
Pressure increases
Pressure-volume relationship at constant temp
Pressure-volume relationship at constant temp
Inversely proportional
Why increased volume decreases pressure
Why increased volume decreases pressure
Particles spread out, fewer collisions with walls
Equation for pressure-volume relationship
Equation for pressure-volume relationship
If volume doubles (constant temp), pressure...
If volume doubles (constant temp), pressure...
Halves
Effect of doing work on a gas
Effect of doing work on a gas
Increases internal energy and temperature