14.01-14.20-Particle Model Flashcards
What 2 states have similar densities?
Solid and liquids
In gases by how many times do the spaces between atoms increase by?
x10
What is conserved during a change in state?
Mass
What will heating a system do?
.Change the energy stored within a system
.Raise its temperature
.Produce changes in state
Define Specific heat capacity
The energy required to raise the temperature of 1kg of substance by 1 degree celsius
Define specific latent heat
The energy required to change the state of 1kg of a substance without a change in temperature
Give a way you could reduce unwanted energy transfer
Thermal insulation
What does increasing the pressure of gas cause it to do?
.Causes it to compress-(Smaller volume)
What does doing work on a gas do?
Increase its temperature
What does increasing the temperature of a gas do to its particles?
Increase the velocity
What is the temperature of absolute 0
-273 degrees celsius
What happens to the particles at absolute 0?
.There is no motion
How can gases be expanded or compressed?
By pressure changes
What does the pressure of a gas produce?
A net force at right angles to any surface
Whats the correlation between changing the volume of gas and the particles colliding?
Increase-Less collisions
Decrease-More collisions
