Gases take up more space than solids or liquids and their particles are moving much faster. The temperature, pressure and volume of gases are all related.
Which description best fits the particles in a gas?
Vibrate slowly about a fixed point
Vibrate quickly, free to move past other particles
Move quickly and randomly in all directions
Which description best fits the relationship between a gas and its container?
Maintains a regular shape regardless of the shape of the container
Fills the bottom of the container
Fills the entire container
What causes the pressure that a gas exerts?
Collisions with the particles on the walls of the container
The charge of the particles
The size of the particles
When a gas is heated but the volume does not change, which of these statements is true?
The force per collision increases only
The number of collisions per second increases only
Both the force per collision and the number of collisions per second increase
What property of a gas is linked to its temperature?
The average kinetic energy of gas particles
The weight of the gas particles
When a gas is squashed at a constant temperature, which of these statements is true?
What will happen to the volume of a gas if the pressure on it is tripled?
Increase by a factor of 3
Stay the same
Get 3 times smaller
If the pressure of a gas is 150,000 Pa and it occupies a volume of 0.3 m3, what will the pressure become if it is squashed to a volume of 0.15 m3?
To test how the pressure of a gas varies with its volume, which other variable must be controlled?
The amount of lighting in the laboratory
Making sure the weather is the same outside
When a bicycle pump compresses a gas it becomes warmer. Why? - Higher
The person pumping has made the gas hot by the heat from her hands
The pressure has risen
Work has been done in squashing the gas