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Properties of Metals
• This presentation shows the main properties of metals and their meanings.
Malleable
• This property means that metals can be hit without shattering.
• They can be hammered into shape, even when cold and not break into lots of small pieces.
Shiny
• Most metals are silvery in colour, except copper and gold.
• Some go dull over time.
• All metals are shiny when freshly cut.
Conductors
• They are very good conductors of heat and electricity.
• This is why they are used for pots and pans and in electrical circuits to carry the current.
Ductile
• This property means that metals can stretched very thinly without them breaking.
• This is why they can be drawn out into wires.
Sonorous
• This property refers to the sound that metals make when they are hit.
• Metals make a ringing sound when they are struck.
Physical Properties of Non-Metals
Thermal Insulator
• Thermal insulators do not let heat pass through them.
• Wool is made out of non-metal elements like Carbon, Nitrogen, Oxygen and Sulphur
Brittle
• This means that it is likely to break if you drop it.
Electrical Insulator
• Non-Metals are poor electrical conductors.
• They therefore make good electrical insulators because they cannot conduct electricity
• The PVC coating on electrical wires is made of the non-metals Carbon, Hydrogen and Chlorine.
Dull
• Non-Metals do not have a shiny surface like metals.
• They are usually dull in appearance
Physical Properties of Non-Metals
• Thermal insulator
• Brittle
• Electrical insulator
• Dull