Section 1: Physical properties of matter Chapter 2: Matter Properties and changes

A) Physical Properties

1) Matter: anything that has mass and takes up space

2) Physical Properties: Properties that can be observed or measured without changing an object

a) Observable Properties: Size, Color and Smell

b) Measureable Properties: Melting and Boiling Point, Attraction to Magnets

3) Texture: How the surface feels,eg. rough, smooth, waxy, powdery

4) Malleability: ability of a substance to be hammered into thin sheets or shaped

5) Ductility: ability of substance to be pulled into thin threads without breaking

6) Brittle: Object break easily (opposite of malleable and ductile)

7) Density: the amount of mass that fits in a given volume (mass / volume) d=m/v

8) Buoyancy: The ability to float in a liquid or rise in a gas

a) Objects with a density lower than 1 float in water

a) Why do you think that happens?

b) Objects with a density greater than 1 sink

c) Gases with density lower than air rise

B) Physical Changes: change the physical properties of an object, but it does not become a different substance.

B) Physical Changes: change the physical properties not the substance.

1) Example Paper cut into tiny bits 1) Example Paper cut into tiny bits. each piece is still paper, the size changed

2) Example Erosion of large rocks and mountains turned into smaller pieces

3) Aluminum rolled into sheet, changed its shape

4) Copper pulled in threads for wiring