P3.5 Kinetic theory and gases

Question 1

What are the three states of matter?

Answer 1

Solids, liquids and gases

Question 2

What form of matter has the strongest bonds between particles?

Answer 2

Solids

Question 3

What is the temperature of a gas a measure of?

Answer 3

The average kinetic energy of the particles in the gas

Question 4

What happens to temperature as the kinetic energy of particles increases?

Answer 4

It increases

Question 5

What is pressure?

Answer 5

Force per unit area

Question 6

What is pressure measured in?

Answer 6

pascals, (Pa)

Question 7

Why does increasing temperature increase the pressure of a gas?

Answer 7

It makes the particles move faster, which means that:

• there are more collisions with the walls of the container
• the particles hit the container with a greater force

Question 8

How do you calculate pressure?

Answer 8

Force / area

1 N/ m^2

Question 9

What temperature is absolute zero in degrees?

Answer 9

-273^C

Question 10

What temperature is absolute zero in Kelvins?

Answer 10

0K

Question 11

What happens to pressure when a gas reaches absolute zero?

Answer 11

There is no more pressure because the particles stop moving

Question 12

How do you convert a temperature from Kelvin to Celsius?

Answer 12

-273

Question 13

How do you convert a temperature from Celsius to Kelvin?

Answer 13

+273

Question 14

What is the average kinetic energy of particles in a gas directly proportional to?

Answer 14

The Kelvin temperature of a gas

Question 15

What happens to pressure as the volume of a gas increases at a constant temperature?

Answer 15

It decreases

Question 16

What equation is used to calculate initial or final temperature, pressure and volume?

Answer 16

(P^1 x V^1) / T^1 = (P^2 x V^2) / T^2