5 Solids, liquids and gases Flashcards
How do gases move?
The particles in gas are spread out and are constantly moving in a random, haphazard way.
What do gases exert when the hit the walls of a container?
A force. The combined effect of the huge number of collisions results in the pressure that is exerted on the walls of the container.
What happens to the volume when the pressure is doubled?
It is halved.
What is the equation for Boyles law?
P1 x V1 = P2 x V2
What do more collisions per second mean?
A greater average force on the wall - a greater pressure.
Why is there a temperature called absolute zero?
- As we cool the gas, the pressure keeps decreasing.
- The pressure of the gas cannot become less than zero.
- Suggesting that there is a gas further down than 0 celsius.
What is the kelvin temperature of a gas proportional to?
The average kinetic energy of its molecules.
How do you convert K to C?
+273
How do you convert C to K?
-273
What is the equation for a fixed mass at a constant volume?
P1 = P2
— —
T1 T2
What does T have to be in?
Kelvin.
