Solids, Liquids and Gases - Ideal gas molecules

Question 1

What is absolute temperature

Answer 1

absolute zero ( the lowest theoretical temperature) measured in Kelvinv

Question 2

what motion do molecules have and how do they exert force within a container

Answer 2

molecules in a gas have random motion and they exert force, hence a pressure, on the walls of the container

Question 3

what temperature in Celsius is absolute zero

Answer 3

-273 degrees Celcius

Question 4

what is Kelvin compared to Celsius

Answer 4

Kelvin is the celsius + 273

So absolute zero in kelvin(K) is 0

Question 5

why does an increase in temperature cause an increase in the average speed of a gas molecule

Answer 5

As more (thermal) energy is supplied to the particles giving them more kinetic energy and therefore a higher average speed

Question 6

How is the kelvin of a gas related to its kinetic energy

Answer 6

They are directly proportional

Question 7

what is the relationship between pressure and volume at constant temperature + pressure and Kelvin temperature at constant volume

Answer 7

They are inversely proportional

Question 8

what is the relationship between the volume and temperature of a fixed mass of gas at a constant volume

Answer 8

V1 V2
— = —
T1 T2

Question 9

what is the relationship between the pressure and volume of a fixed mass of gas at constant temperature

Answer 9

P1 x V1 = P2 x V2