Metals and Non-Metals

Properties of MetalsAlmost all metals on the periodic

table that are lustrous, malleable, ductile and are good conductors of heat and electricity.

Examples:

Properties of Metals cont’d…Appear on the left side of the

periodic table.Metals generally have a high density and high melting point.

Most metals are solid at room temperature except??

Uses of MetalsBecause they are good conductors of heat

and electricity, metals are very useful.Examples:

Copper wire used in electrical circuits.Iron used in pots and pans.Aluminum used as a heat sink in computers.

Tungsten used in light bulbs.

Properties of Non-MetalsNon-metals tend to have low lustre (dull), be brittle and are not ductile or malleable.

Most are poor conductors of heat and electricity.

Examples:

Properties Cont’d…Non-metals can be either solids or gases at room temperature, but one is a liquid, which one??

Uses of Non-MetalsBecause they are poor conductors of

heat and electricity, non-metals can also be very useful.

Example:Argon gas used as an insulator between panes of glass in windows.

Neon and phosphorus can be used as light sources.

Metals and Non-MetalsLooking at the periodic table in the back of

the text book:Metals are coloured BLUENon-Metals are coloured YELLOW

What about the GREEN ones?

MetalloidsSome elements found on the

periodic table have properties of both metals and non-metals

These elements are called metalloids.

Examples:

Where are the Metalloids?Represented by a downward staircase on the periodic table,

starting at boron and ending at polonium.

Becoming a Metal Detective (page 213)

Investigation 5-B: Physical Properties of Metals and Non-Metals

Purpose – what is being investigated? (copy from text)

Hypothesis – answer the question in the text

Observations: - copy the following chart:

ELEMENT

SYMBOL

LUSTRE(y/n)

MALLEABILITY(y/n)

CONDUCTIVITY(y/n)

MAGNETIC(y/n)

COLOUR

Analysis – answer question #1

Conclusion – answer questions #2, #3

Type your report and follow the guidelines on the LAB

REPORT FORMAT handout.

Due Date: Monday, March 3