Phase Change Unit (Amplify)

freedom of movement

the way molecules in a substance move around relative to each other

molecular attraction

a pull between two molecules that is always the same for a substance

molecule

a group of atoms joined together in a particular way

phase

a noticeably different form or state of the same substance

refute

to provide evidence that goes against a claim

scale

the relative size of things

temperature

a measure of how hot or cold something is

What is the molecular attraction of a gas?

Low molecular attraction

What's a solid?

Firm and stable in shape; not liquid or fluid.

What's a liquid?

A substance that flows freely but is of constant volume, having a consistency like that of water or oil.

What's a gas?

A substance or matter in a state in which it will expand freely to fill the whole of a container, having no fixed shape (unlike a solid) and no fixed volume

What are molecules?

A group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction.

What is condensation?

Water which collects as droplets on a cold surface when humid air is in contact with it.

What is evaporation?

The process of turning from liquid into vapor.

What causes a solid to melt?

Melting is a process that causes a substance to change from a solid to a liquid. (When energy is added to the system)

What is it called when a gas turns into a solid?

Deposition

What is it called when a liquid turns into a solid?

Freezing

What is it called when molecules move around each other?

Liquid

What is the process of a solid turning into a gas?

Sublimation

kinetic energy

the energy that an object has because it is moving