How fast the particles are moving?
The actual average speed of the particles depends on their mass as well as the temperature – heavier particles move more slowly than lighter ones at the same temperature. The oxygen and nitrogen molecules in air at normal room temperature are moving rapidly at between 300 to 400 metres per second.
Do particles move at the same speed?
All molecules at the same speed. Molecules move at different speeds and we use the average speed.
Do particles in solids move very quickly?
Students should realize that if you heat a solid, the atoms or molecules move faster and move further apart. If you cool a solid, the molecules move more slowly and move a little closer together.
What determines the movement of particles?
Diffusion is the movement of particles move from an area of high concentration to an area of low concentration until equilibrium is reached. The rate of this movement is a function of temperature, viscosity of the fluid and the size (mass) of the particles.
How are the particles moving?
Particles move by vibrating, but do not change positions. When solids get hot, the particles vibrate more. Increased vibration pushes the particles farther apart, causing the solid to expand. We are surrounded by solids, liquids, and gases.
What is the speed of gas particles?
So the average speed of a gas molecule is about 500 m/sec. This is roughly the speed of sound in a gas 340 m/sec. So the average kinetic energy of the gas molecules is related to the temperature of the gas.
Do particles move faster in a gas or plasma?
Phases of matter
| A | B |
|---|---|
| molecules move faster than liquids in this state | gas |
| molecules move the slowest in this state | solid |
| molecules move around each other in this state | liquid |
| molecules can escape their container in this state | gas or plasma |
Do solid particles move?
Solid In a solid, the attractive forces keep the particles together tightly enough so that the particles do not move past each other. Their vibration is related to their kinetic energy. In the solid the particles vibrate in place.
How movement of particles in an object affect the speed of sound?
If a material is more dense because its molecules are larger, it will transmit sound slower. It takes more energy to make large molecules vibrate than it does to make smaller molecules vibrate. Thus, sound will travel at a slower rate in the more dense object if they have the same elastic properties.