Matter & Particle Theory

Matter Anything that has a volume and mass

The Particle Model A Scientific model that says that matter is made of particles (discontinuous) Based on the following:

1. Matter is made of particles that are extremely small. 2. Particle are in constant motion. 3. Temperature increases, movement of particles increase 4. Particles may be held together by forces of attraction.

Phases of Matter Particle model can be used to explain the phases of matter.

1. Solids Particles are very close together, Strong forces of attraction Very little movement, just vibrate Definite structure and shape

2. Liquid Particles very close Weaker forces than solid Slide over each other Definite volume, indefinite shape

3. Gas Particles very far apart No forces of attraction Lots of space between particles No definite shape, nor volume

Atomic Model Particles that make up matter are either ATOMS or MOLECULES Example: a molecule of water is made up of 2 types of atoms Water molecule

Organization of Matter Copy: FLOW CHART ON BOARD Write out definitions & examples of ELEMENT, COMPOUNDS, SOLUTIONS, COLLOIDS on your chart Read p. 21-22 Do. P. 13-14 Workbook