topic 1 - particles and substances

How are the particles arranged in a gas

Widely spaced and randomly arranged, takes the shape of the container

How are the particles arranged in a liquid

Close together but randomly arranged, takes the shape of the container

How are the particles arranged in a solid

Tightly packed in a fixed, regular arrangement

What is the change from gas to liquid

Condensing

What is the change from liquid to gas

Boiling

What is the change from liquid to solid

Freezing

What is the change from solid to liquid

Melting

What is the change from solid to gas

Sublimation

What is the change from gas to solid

Deposition

When heated particles ……… kinetic energy

Gain

When cooled particles ………….. kinetic energy

Lose

Define diffusion

The movement of particles from a high concentration to a low concentration

Define solvent

The liquid in which the solute dissolves

Define solute

The solid which dissolves in the solvent

Define Solution

The combination of the solvent and the solute

Define saturated solution

When no more solute can be dissolved in a solvent

What is an atom

The smallest part that makes up all matter

What is a molecule

A combination of 2 or more different atoms, chemically bonded together

What is an element

A substance containing just one type of atom

What is a compound

A combination of two or more different elements chemically bonded together

What is an ion

An atom or group of atoms which have a change due to the gain or loss of electrons