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WorksheetsTemperature Pressure Gases
Total questions: 13
Worksheet time: 14mins
The pressure law states that (a) is (b) to (c) , measured in (d) .
What is the Pressure Law formula?
T1p1=T2p2
p1×T1=p2×T2
p1+T1=p2+T2
p1−T1=p2−T2
In the pressure law formula, what unit must temperature be in?
T1p1=T2p2
If P1 = 200,000 Pa and T1 = 127K and;
T2 = 254K, find P2 in Pascals.
(a)
If P1 = 2 Pa and T1 = 300K and;
P2 = 5Pa, find T2 in Kelvin.
(a)
If P1 = 1.2x105 Pa and T1 = ? and;
P2 = 3.0x105 Pa, T2 = 600K.
Find T1 in Kelvin
(a)
If P1 = 100 kPa and T1 = 27oC and;
P2 = ? Pa, T2 = 270oC.
Find P2 in Pascals
(a)
Dr Limburn takes a sealed test-tube of air with a pressure of 100 000Pa. He heats the test-tube from 20oC to 50oC. What is the new pressure of the air inside the test tube?
110 kPa
115 000 Pa
250 kPa
250 000 Pa
Mrs Thomas sails on an inflatable boat to Scotland. When she inflated the boat it had a pressure of 180kPa. By the time she reaches Scotland, the boat now has a pressure of 165kPa. If it is -5oC in Scotland, what was the temperature in Celsius when Mrs Thomas left the South Coast?
19.4oC
292.4oC
16.8oC
13.6oC
Why does the pressure increase when a gas is heated in a container?
The particles collide with the walls more frequently
The particles collide with the walls with more force
The particles collide with each other at higher speeds
The particles become less dense
Explain why smoke particles in air move about faster if the temperature of the air is increased.
The air particles have a higher kinetic energy when temperature increases
This means that they move faster
The air particles collide more frequently with the smoke particles
The air particles transfer kinetic energy to the smoke particles
When the smoke particles have more kinetic energy, they move faster
A gas cylinder is fitted with a valve that opens and lets gas out if the gas becomes too hot. Explain how the gas pressure changes if temperature increases.
The gas particles gain kinetic energy as temperature increases.
The particles collide more often with the container walls.
The particles also collide against the walls with more force.
This exerts a higher force on the walls of the container.
This increases the pressure on the container.
A gas cylinder is fitted with a valve that opens and lets gas out if the gas becomes too hot. Explain what happens when the pressure gets too high and the valve opens.
The gas pressure inside increases and becomes higher than atmospheric pressure.
This will force the valve to open and let some gas out.
This will cause the pressure in the cylinder to decrease as there are less particles.
The pressure will decrease until the gas and atmosphere have the same pressure.
The valve will then close.
