1. What is Matter?
Matter is anything you can see or touch. It is the atoms everything is made of.
Matter comes in different PHASES (forms)
Solid – has it’s own shape, molecules really close
Liquid- takes the shape of area and little packed molecules
Gas- takes shape of area and very loose packed molecules
Plasma – high energy molecules slightly packed together

2. Examples of Phases

3. Changing Phases Matter can change from one phase to another.
Melting – solids change to liquid
Freezing – liquid changes to solids
Boiling/Evaporation – liquids change to gas
Condensation- gas changes to liquids
Sublimation – solid changes to gas

4. Examples of Phase Changes

5. How do we group Matter? Physical Properties Chemical Properties
Characteristics that can be measured and observed.
Mass, Volume, Density, Color, Shape, Texture, Hardness
Chemical Properties
Characteristics that can allow a substance to change into a new and different substance
Flammability, chemical reaction (dissolving, rusting, molding, combining)

6. Examples of Properties

8. Pure substances
Pure substance are NOT mixtures, they are ALWAYS THE SAME elements (atoms) or compounds put together in the SAME AMOUNT.

9. Elements Matter!
Elements are pure substances made of only ONE KIND of atom.

10. Compounds Matter too!
Pure substances made of more than one element but always in the SAME AMOUNT.

11. Chemical Classification of Matter