Metals & Non-metals

Today’s Objectives:

• Describe the appearance of metals and non-metals

• Test the conductivity of metals and non-metals

• Understand the properties of metals and non-metals

Metals and non-metals

Vs.

Copper ChlorineSpot the difference! Make a list of the

differences between these two elements

Activity:• You will be given 6 different substances

• You need to determine if they are metals or non-metals

and then test their properties. Your results must be

presented in a table (which is shown on the next slide).

• Then with your results make 4 general rules (2 for metals

and 2 for non-metals) that can be used to identify objects

as metals or non-metals.• For example:

• All metals (are/are not) malleable• …• Non metals (do/do not conduct electricity)• …

SubstanceMetal or

non-metal?Appearance

Is it flexible or brittle?

Is it hard or soft?

Does it conduct

electricity?

Metals and Non-Metals

Properties Summary

Metals• High melting point• Shiny• Malleable• Hard (high density)• Conduct electricity• Conduct heat

Non-metals• Low melting point• Dull• Brittle• Soft (low density)• Do not conduct electricity

• Do not conduct heat

Why is it made of metal?Water pipes are made of copper because …

Alloy wheels are made from aluminium because…

Jewellery is made out of gold because …

Review

Properties of metals?

DuctileStrong

Brittle

Malleable Insulator

Conductor

Sonorous

Low melting point

High boiling point