Physical Properties Notes (6.6) The student knows matter has physical properties that can be used...

Physical Properties Notes

(6.6) The student knows matter has physical properties that can be used for classification.

• Compare metals, nonmetals, and metalloids using physical properties such as luster, conductivity, or malleability

Physical Properties

• Appearance – Color, size, shape, texture

• Buoyancy – Tendency to float

• Boiling Point – Temp where it changes from liquid to gas

• Conductivity – Ability to conduct heat, sound or electricity

• Density –Amount of matter in a given volume D=m/v

• Ductility – Ability of a substance to be pulled into a thin strand, such as wire.

• Hardness – Ability to resist being scratched

• Luster- How it reflects light• Magnetism – Ability to attract iron• Malleability – Ability to be pressed or

pounded into thin sheets• Mass – Amount of matter in an object• Melting point – Temp where a substance

changes from a solid to a liquid.

• Odor

• Solubility – Ability of a substance to dissolve

• State of Matter – Solid, liquid or gas

• Temperature – Amount of energy in matter

• Volume – Amount of space an object takes up.

Metals, Nonmetals, & Metalloids

• Elements are classified as metals, nonmetals, and metalloids based on their properties.

• Metal – element that is shiny, ductile, malleable and a good conductor

• Nonmetal- element that is not shiny, ductile, malleable and is not a good conductor

• Metalloid – an element that has properties of both metals and non metals.

• Zig zag line (stair step) on periodic table separates the metals and nonmetals

• 6 elements that border the zig zag are metalloids

http://www.cwu.edu/~cots/images/periodic_table.jpg

Metals Non metals Metalloids

Shiny Mostly dull Varying ability to conduct electricity

Malleable (can be flattened into sheets)

Brittle, not malleable or ductile

Can be used to make semiconductors – conduct electricity only under certain conditions.

Ductile (can be shaped into wires)

Poor conductors of heat & electricity

Good conductors of heat & electricity

Many are gases at room temp.

Most are solid at room temp.