Gas Pressure (Year 7: Particles)

Which state of matter would be described as having a fixed shape, high density and is not compressible?

• A Solid

• A Liquid

• A Gas

What causes pressure in a contained gas?

• How fast the particles are moving.

• The direction the particles are moving in.

• How frequently the gas particles collide with the walls of their container.

• How frequently the gas particles avoid the walls of their container.

What effect does INCREASING volume have on the pressure exerted by a gas?

• The pressure will decrease

• The pressure will increase

• The pressure will stay the same

• The pressure will disappear

What effect does INCREASING temperature have on the pressure exerted by a gas?

• The pressure will decrease

• The pressure will increase

• The pressure will stay the same

• The pressure will disappear

What effect does INCREASING altitude have on gas pressure?

• The pressure will decrease

• The pressure will increase

• The pressure will stay the same

• The pressure will disappear

Which of the following is NOT a change of state?

• Boiling

• Melting

• Heating

• Freezing