Gases and the Ideal Gas Law

Question 1

What do different states of matter rely on?

Answer 1

The different arrangements of molecules

Question 2

What are 3 properties of gases?

Answer 2

1) They expand to fill their container
2) They exert a force on the walls of their container
3) Ideal gas approximation: Interactions between molecules of a gas can be ignored

Question 3

Why do gases exert a force on the walls of their container?

Answer 3

Molecules are constantly in motion and collide with the walls

Question 4

How do you calcuate pressure?

Answer 4

p = Force / Area

Question 5

Why can interactions between gas molecules be neglected?

Answer 5

The space between molecules is much larger than the size of the molecules themselves, and are too far apart to interact with each other

Question 6

What is the Ideal Gas Law?

Answer 6

pV = nRT

Question 7

What is Boyle’s Law?

Answer 7

The pressure of a system is inversely proportional to its volume at constant temperature and number of moles

Question 8

What is Charles’s Law?

Answer 8

Volume is directly proportional to temperature at constant pressure and number of moles

Question 9

What is Amonton’s Law?

Answer 9

Pressure is proportional to temperature at constant volume and number of moles

(Increasing temp. increasing no. of collisions, increasing force and pressure on container)

Question 10

What is Avogadro’s Law?

Answer 10

Equal volumes of gas at the same temperature and pressure contain the same number of molecules

(Volume is proportional to number of moles at constant temperature and pressure)