2.8 Gas Laws

Question 1

Describe solids in terms of the arrangement and movement of the particles.

Answer 1

Particles are arranged very close together and vibrate (move) in the one spot.

Question 2

Describe liquids in terms of the arrangement and movement of the particles.

Answer 2

Particles are arranged close together and they swap places with their nearest neighbouring particles.

Question 3

Describe gases in terms of the arrangement and movement of the particles.

Answer 3

Particles are arranged far apart and they move very fast/ randomly in all directions.

Question 4

What is pressure?

Answer 4

The force exerted on a surface per one metre squared

Question 5

What is the unit of pressure?

Answer 5

Nm-2

Pascals, Pa

Question 6

What is the equation involving pressure, force and area?

Answer 6

Pressure= force/ area
P= F/A

Question 7

What is the general gas equation?

Answer 7

p1 x V1/ T1 = p2 x V2/ T2

Question 8

What is absolute zero?

Answer 8

-273°C is 0 on the Kelvin temperature scale.

At absolute zero, all particle motion stops and this is therefore the lowest possible temperature.

Question 9

How to you convert degrees celsius into kelvin?

Answer 9

Add 273

Question 10

How to you convert kelvin into degrees celsius?

Answer 10

Subtract 273