1. Properties of Magma

2. Physical and Chemical Properties
All substances are made up of Elements
Elements substance that cannot be broken down into other substances
Compounds substance made up of 2 or more elements
Physical or chemical properties can be used to identify a substance or predict how it behaves

3. Physical Properties
Characteristic of a substance that can be observed or measured without changing the composition of the substance
Examples
Density
Hardness
Melting point
Boiling point
Magnetic

4. Chemical Properties
Any property that produces a change in the composition of matter
Examples
Combustion
Formation of rust
Mineral forming from magma
Can tell reaction by change of color, gas produced or new solid is formed!

5. Viscosity Is a physical Property The resistance of a liquid to flow
Greater the viscosity (friction), slower it flows
Why?

6. Viscosity of Magma Depends upon Silica and Temperature Silica
The more silica, the higher the viscosity (friction)
Temperature
Higher the temperature, the lower the viscosity
Pahoehoe: low viscosity, fast moving
Aa: High viscosity, slow moving