How does heat affect molecular motion?
How does heat affect molecular motion?
When heat is added to a substance, the molecules and atoms vibrate faster. As atoms vibrate faster, the space between atoms increases. The motion and spacing of the particles determines the state of matter of the substance. The end result of increased molecular motion is that the object expands and takes up more space.
How is molecular motion of gases related with temperature?
In the kinetic theory of gasses, increasing the temperature of a gas increases in average kinetic energy of the molecules, causing increased motion.
Why do gas molecules move rapidly while solid molecules do not?
The particles are moving much faster than in a solid. When you add even more energy to the substance, you increase the kinetic energy of those particles so much, that they lose their state form, becoming a gas.
How do molecules move in gas?
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. In liquids, particles are quite close together and move with random motion throughout the container.
How do molecules move in a solid liquid and gas?
The particles in a solid are tightly packed and locked in place. The particles in a liquid are close together (touching) but they are able to move/slide/flow past each other. The particles in a gas are fast moving and are able to spread apart from each other.
Do molecules move fastest in a solid liquid or gas?
Phases of matter
| A | B |
|---|---|
| molecules move fastest in this phase | plasma |
| 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 |