P6 Flashcards
Description of particles in a solid
Held next to eachother in fixed position and are least energetic
Description of particles in a liquid
Move about at random and are in contact with eachother, they are more energetic than particles in a solid
Description of particles in a gas
Moves about randomly and far apart from eachother and are most energetic
What happens when a substance changes state
Its mass stays the same because the number of particles stays the same
What is the pressure of a gas caused by
The random impacts of gas molecules on surfaces tha are in contact with the gas
Why does The pressure of the gas increases when the temp of a gas in a sealed container is increased
-the molecules move faster creating more impact on the container
What is evidence of the random motion of gas molecules
The unpredictable motion of smoke particles in air
