Saturday, December 20, 2014

common material basics from mikecurtis check their website

List of Common Materials        source:http://www.mikecurtis.org.uk/ks2_materials.htm
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SUBSTANCE

Description

USE/PROPERTY
Iron
Grey metal
Cheap and strong but rusts easily. The only magnetic metal.
Sulphur
Yellow solid
Soft and crumbly. Burns to make a gas with a chocking smell.
Brass
Yellow metal
An ALLOY of copper and zinc. Used to make water taps. (Often covered with a shiny layer of CHROME metal)
Copper
Pink Metal
Used to make water pipes and electric wires.
Mercury
Grey metal
The only liquid metal. Very heavy and very poisonous. Used by dentists for 'fillings'.
Aluminium
Pale grey metal
Low density (very light). Used to make saucepans and kitchen foil.
Gold
Yellow metal
Very heavy precious metal. Does not corrode. Used for jewellery and electrical contacts.
Perspex
Colourless,
transparent
Often used instead of glass as it is strong and light but scratches and melts easily.
Glass
Pale green,
transparent
Very hard (does not scratch easily) but easy to break.
Zinc
Grey metal
Plated over iron to stop it rusting (called GALVANIZED iron and is used for buckets, water tanks)
Lead
Grey metal
Soft and bendy. Melts easily. Used on roofs. Used to used in pencils.
Tin
Grey metal
Placed in a very thin layer on the inside of 'tin' cans to stop the iron going rusty.
GMaterials can be placed into groups:
   
MetalsShiny, conduct electricity and heat, strong, often heavyGirders, Bicycle frames, Electric wires, Tools, Saucepans and good quality cuttlery.
CeramicsSubstances made from pottery. They have been 'fired' at some stage in their manufacture.
They look attractive, do not burn or melt but are usually brittle and break easily
Tiles, kitchen plates, good quality cups
Plastics
Plastics usually melt or burn easily,.
They are not very strong but can easily made into different shapes.
They arecheap to produce and are good electrical insulators
Washing up bowls, covering to electric wire, plugs, cheap cuttlery, containers for food
Glass:Glass looks attractive and can eaily be made into different shapes.
Transparent, Is not effected by liquids.
Brittle but hard. (Breaks easily but will not easily scratch)
Windows, mirrors, glasses, bottles
Wood
Cuts easily and can be polished so it is shiny.
Looks attractive
Furniture, building materials

Grey /black solid
Formed from carbon. Used in pencils instead of lead (which is poisonous).
Properties of materials
A property of a material is something about it that we can measure, see or feel

Examples of different properties

Strong
Weak
Heavy
Light in weight
Rough
Smooth
Shiny
Dull
Hard
Soft
Flexible
Brittle
Magnetic
Non-magnetic
Transparent
Opaque
Conduct electricity
Electrical insulator
Conductor of heat
Thermal (heat) insulator
Burns when heated
Does not burn
Melts easily 
Does not melt easily