Pressure in Liquids and Ideal Gases

Question 1

Pressure at a point in a gas or liquid which is at rest:

Answer 1

Acts equally in all directions

Question 2

Why do molecules in a gas exert pressure on the walls of the container
How does temperature increase pressure

Answer 2

The molecules in the gas have a random motion and when they collide with the walls of the container they exert a force and hence a pressure
As temperature increases, the particles gain more kinetic energy and move faster (the average kinetic energy increases), colliding with the walls of the container more frequently

Question 2

Pressure is proportional to

Answer 2

Temperature given the volume is constant

Question 3

Absolute zero is at
Why

Answer 3

-273C
The particles have no kinetic energy

Question 4

Increase in temp

Answer 4

Increase in speed

Question 5

Kelvin temperature of gas is directly proportional to

Answer 5

Average kinetic energy of its molecules

Question 6

At a constant temp, pressure is

Answer 6

inversely proportional to volume

Question 7

At a constant volume, pressure is

Answer 7

directly proportional to temperature IN KELVIN