Structure 1.5

Question 1

Rules of the ideal gas model

Answer 1

1. The particles in a gas have negligible volume compared with the volume the gas occupies.
2. There are no intermolecular forces between the particles except when the molecules collide.
3. Gas particles have a range of speeds and move randomly. The average kinetic energy of the
   particles is proportional to the temperature.
4. The collisions of the particles with the walls of the container and with each other are elastic:
   kinetic energy is conserved.

Question 2

What is the relationship between the volume of ideal gas particles and the volume the ideal gas occupies?

Answer 2

The particles in an ideal gas have negligible volume compared to the total volume the gas occupies.

Question 3

What are the intermolecular forces between ideal gas particles?

Answer 3

There are no intermolecular forces between ideal gas particles, except when they collide with each other.

Question 4

How do ideal gas particles move, and what is the relationship between their kinetic energy and temperature?

Answer 4

Ideal gas particles move randomly and have a range of speeds. Their average kinetic energy is proportional to the temperature.

Question 5

What happens during collisions between ideal gas particles and container walls?

Answer 5

The collisions are elastic, meaning kinetic energy is conserved during collisions between ideal gas particles and with the container walls.

Question 6

When do real gases particularly deviate from the ideal gas model?

Answer 6

When conditions bring the gas closer to forming a liquid, low temp and high pressure

Question 7

What is volume measure in in the ideal gas equation?

Answer 7

m^3

Question 8

STP conditions

Answer 8

273.15K , 100kPa

Question 9

Converting volume in cm^3 to m^3

Answer 9

1x10^-6

Question 10

Boyles law

Answer 10

For a fixed mass of gas at constant temperature, the pressure is inversely proportional to the
volume

Question 11

Graph of P against 1/V when T is constant

Answer 11

Straight line (positive)

Question 12

Graph of P against T when Volume is constant

Answer 12

A straight line with a y intercept of absolute 0 (the origin)

Question 13

Graph of V against T when P is constant

Answer 13

Straight line, which can be extrapolated to find an x int of absolute 0 (left of y axis)

Question 14

Charles’s Law

Answer 14

For a fixed mass of gas at constant pressure, the volume is directly proportional to the absolute
temperature (this

Question 15

Why do real gases deviate from the ideal gas model?

Answer 15

1. The particles themselves occupy some volume
2. There are some attractive forces between the particles