P3 Thermal Physics Flashcards
Describe the particle arrangement of a sold
Tightly packed in a regular arrangement. Particles cant move but vibrate on the spot
Describe the particle arrangement of a liquid
Close together, but irregular arrangements. They can flow past each other
Describe the particle arrangement of a gas
Separated with no regular arrangement. Particles can move freely
How does density compare in solids, liquids and gases?
Solids are the most dense, then liquids then gases
How does temperature affect the motion of particles
As temperature increases, particles have more kinetic energy, so vibrate/mive more.
What is brownian motion
The constant and random movement of particles in a fluid, resulting from collisions between the particles
Evaporation
The escape of higher energy particles from the surface of a liquid to form a gas
What happens when gases cool
They lose energy and condense back into a liquid
What happens if the volume of a fluid is decreasedl
The pressure inceases
What happens if the temperature of a gas in increased
The pressure will increase
Thermal expansion
When a material is heated, the particles have more kinetic energy so move more, resulting in more space between molecules and resulting the expansion of materials
Which state of matter experiences the most thermak expansion
Gases bc the particles have most freedom to move
