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10 questions
Pressure is the _____ per unit area.
Select the correct units for pressure.
N
N/m2
Pa
m/s
Temperature is the average _______ energy of the particles in a substance.
The temperature at which particles have no kinetic energy is called ________ ____.
To change from degrees Celsius to Kelvin you add ___.
A piece of tin is at a temperature of 3.7°C. State the value of this temperature in Kelvin.
Increasing the temperature of a gas will _______ the pressure it exerts.
increase
decrease
not affect
Why does increasing the temperature of a gas increase the pressure it exerts?
It increases the number of particles in the gas.
It increases the speed of collisions between the particles and the container.
It increases the size of the particles in the gas.
It increases the number of collisions between the particles and the container.
If the temperature of a gas is kept constant but the volume is decreased, the pressure will _______.
increase
decrease
remain constant
If the volume of a gas is kept constant but the temperature is decreased, the pressure will _______.
increase
decrease
remain constant
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