Presentation on theme: "Describe four physical differences between the dogs."— Presentation transcript:
Describe four physical differences between the dogs.
Physical Property: A characteristic of a substance that can be observed without changing it into another substance. Chemical Property: A characteristic of a substance that describes its ability to CHANGE into different substances. Examples: color, melting point, flexibility Examples: combustion, rust, chemical weathering (acid rain)
Physical Properties of Minerals Hardness: Moh’s Scale of Hardness p. 106 Luster: Metallic or Non-Metallic? Glassy, greasy, opaque… Color: Least reliable
Physical Properties of Minerals Effervesence: Reaction to weak acids Calcite and Dolomite (when powdered) Cleavage or Fracture: Breaks along planes of atomic weakness Density (Specific Gravity):
Cleavage Cubic Octahedron
Physical Properties of Minerals Streak: Color of mineral in powdered form Odor: Ex: sulfur Magnetism