What causes a phase?

What causes a phase?

The current phase a substance depends on how much energy the particles have. Energy is added or removed from a substance as heat. When we add heat we increase the energy of the particles so they move around more and expand. When we remove heat we remove energy so the particles mover around less and contract.

How do you explain phase changes?

A phase changeA physical process in which a substance goes from one phase to another. is a physical process in which a substance goes from one phase to another. Usually the change occurs when adding or removing heat at a particular temperature, known as the melting point or the boiling point of the substance.

Why is phase change considered a physical change?

Phase changes are changes that occur when substances are melted, frozen, boiled, condensed, sublimated, or deposited. They are also physical changes because they do not change the nature of the substance.

What are the factors responsible for change of state of matter?

Temperature and pressure are the two factors which are responsible for change in state of matter.

Is phase change a reaction?

Explanation: A phase change does not involve changing the identity or makeup of that species. When you take solid ice and melt it (add enough energy to it) it changes to water, which is now a liquid. A chemical change would involve reactions taking place that would change the whole identity of that species.

What is the main cause of any change in state?

During a change of state, a substance must gain energy from the environment or lose energy to the environment but the total amount of energy is conserved. Removing enough energy from a gas causes a gas to change into a liquid or a solid. Adding enough energy to a liquid or a solid causes it to change into a gas.