What happens to the particles in a gas when the gas is compressed?
If we compress a gas without changing its temperature, the average kinetic energy of the gas particles stays the same. There is no change in the speed with which the particles move, but the container is smaller. Thus, the pressure of a gas becomes larger as the volume of the gas becomes smaller.
What is the particle model of gas?
The particles in a gas are separated by much larger spaces than the particles in a liquid or a solid. Therefore, a gas is mostly empty space. Since the particles are moving constantly in all directions, they spread throughout their container, no matter what volume or shape their container is.
How do gas particles behave when there is a change in temperature?
In gases the particles move rapidly in all directions, frequently colliding with each other and the side of the container. With an increase in temperature, the particles gain kinetic energy and move faster.
Which property of a gas means it can be used in car tyres?
The coefficient of thermal expansion should be low. This is because when tyres roll they get heated up and transfer this heat to the medium contained by the tyre causing it to expand. This inturn causes additional stresses on the tyre. Nitrogen expands lesser than air so nitrogen is used in racing cars.
What is the best way to describe the particles that make up a gas?
Particles in a:
- gas are well separated with no regular arrangement.
- liquid are close together with no regular arrangement.
- solid are tightly packed, usually in a regular pattern.
Why are gas particles so far apart?
Gas In a gas, particles are in continual straight-line motion. The kinetic energy of the molecule is greater than the attractive force between them, thus they are much farther apart and move freely of each other. In most cases, there are essentially no attractive forces between particles.
How do you explain the particle model?
The particle model describes how the particles that make a solid, liquid or gas are arranged and how they move. In the particle model the particles are constantly moving and colliding with one another. The particles have kinetic energy which is passed on to each other during collisions.
Which particle has maximum kinetic?
Solid particles have the least amount of energy, and gas particles have the greatest amount of energy. The temperature of a substance is a measure of the average kinetic energy of the particles.
What happens to particles during freezing?
Freezing occurs when a liquid is cooled and turns to a solid. Eventually the particles in a liquid stop moving about and settle into a stable arrangement, forming a solid. This is called freezing and occurs at the same temperature as melting.
Which property of air is used to fill Tyres?
Compressibility. The reason why tires are filled with air instead of being solid rubber is to absorb shocks and it can do that by being a compressible gas, able to expand and contract as required.