Metals And Non-Metals Flashcards
Physical properties of metals
Conductor
Ductile
Strong
Malleable
Sonorous
Waterproof
Magnetic
Shiny
Hard
Conductor:
E.g. a saucepans
Conducts heat
Used in wire to conduct electricity
Gives out light
Ductile
Can be shaped into long, thin wires
Malleable
Shaped into jewellery
Sonorous
Makes a nice sound when you hit it
Strong:
Lasts a long time (durable)
Use of gold:
Making jewellery
Use of copper:
Electrical cables
Saucepans
Electrical wires
Use of calcium:
Compounds of this metal are essential for healthy bones and teeth
Use of aluminium:
Making aeroplanes
Saucepans
Casing of compasses
Use of iron:
Making buildings
Saucepans
Framework of skyscrapers
Use of mercury:
This is a liquid metal found in thermometers
Use of steel:
Saucepans
Springs
Framework of skyscrapers
Saw blades
Use of bronze:
Bells
Use of brass:
Bells
Casing of compasses
Use of tungsten:
The filament in light bulbs
Use of lead:
Flashing - the joins on roofs are waterproof with sheets of lead
What is steel?
An alloy of iron
What is bronze?
An alloy of copper and tin
What is brass?
An alloy of copper and zinc
Symbol for gold
Au
Symbol for copper
Cu
Symbol for calcium
Ca
Symbol for aluminium
Al
Symbol for tin
Sn
Symbol for zinc
Zn
Symbol for tungsten
W
Symbol for lead
Pb
Symbol for mercury
Hg
How can we classify elements?
Metals
Non-metals
Semi metals or metalloids
What do we mean by physical properties?
They are features and characteristics that define a material.
All materials have…
Specific sets of properties which can make them useful for certain jobs and useless for others.
Steel
Pure iron is changed into alloys of steel where small amounts of carbon and other metals are added to the iron.
What is an alloy?
An alloy is a mixture of 2 or more metals
How many non-metals are there?
21
Use of sulfer
A yellow solid that is used in the pharmaceutical industry and fertilisers
Symbol of sulfur
S
Physical properties of non-metals
Usually liquids or gases
Brittle (in a solid state)
Low melting point
Poor electrical conductors
Poor heat conductors
Symbol for Oxygen
O