PRESSURE

Question 1

Pressure at any point in any liquid or gas acts ______ in all directions.

Answer 1

EQUALLY

Question 2

Absolute zero

Answer 2

-273 degrees celcius

Question 3

Celcius to kelvin conversion

Answer 3

C = K-273

Question 4

How does increasing temperature increase pressure?

Answer 4

1) particles gain more KE energy
2) move around faster
3) particles collide (with walls and other particles) more FREQUENTLY
4) particles collide with more FORCE
5) more force is exerted onto walls of container = increased pressure

Question 5

Gas laws unit

Answer 5

KELVIN

Question 6

Pressure + temperature law:

Answer 6

P1/T1=P2/T2 (at constant volume)

Question 8

How does decreasing the volume affect the pressure?

Answer 8

Assuming the temperature is the same:
1) when volume is decreased, gas is compressed
2) same number of particles are colliding in a smaller space; collide more frequently per unit area
3) particle still collide with same force, so greater force per unit area exerted onto walls and other particles
4) pressure increases ( P = F/A)

Question 9

BOyl’es law (volume and pressure in gases)

Answer 9

P1V1 = P2V2