P1 - Kinetic Theory Flashcards
why does 1kg of a gas have a larger volume than 1 kg of a solid?
There are strong forces of attraction between the particles in a solid holding the particles close together. In a gas the forces are very small so the particles can spread out.
Why does the temperature of a liquid decrease as the liquid evaporates?
the particles with most energy leave the liquid and the mean energy of the remaining particles decreases so the temperature goes down.
Why does sweating cool you down?
To evaporate the sweat requires energy which is taken from the skin/body.
How can you speed up evaporation?
Increase the surface area; use wind/draughts to allow particles with high energy to escape from the liquid
Describe the arrangement of particles in solids, liquids and gases.
In solids, particles vibrate around fixed positions. In liquids they are arranged in a pattern, in gases they move at high speed in any direction.
What is the ideal weather for drying clothes outside?
Warm/sunny and windy
Why does the mirrorget misty when you have ahot shower?
water evaporates and goesinto the air, mirror is colderthan the air, water particleshit mirror and lose energy,condensation is caused
