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Are materials taken directly from nature that we process into other materials to make products wit.

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We prepare or refine raw materials to obtain natural materials.

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When we process raw materials they become processed materials.

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Hardness.This is the resistance of the material.Example.Steel and Diamond are hard.

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Is the resistanceof a materialto being brokenwen we strike it.

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this is the ability of a materialto be pressed or rolled into a sheet

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Iron: when the porcentage of carbon in the alloy is less than 0.1 porcent
Steel: is a material made mainly from iron with 0.1 porcent to 2 porcent carbon
Cast Iron:is made from iron and 2 porcent to 6.67 porcent carbon

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Copper:This is bright red colour material
Tin:This is a silver colourde shiny metal
Aluminium:Is very lightit is resistant to corrosion a good conductor of heat electricity is used in food packaging
Tin:it is very ductile and malleable wen it is cold, is it use as a filler metal  for soft soldering
Zinc:it is malleable and ductile, it is a good conductor of heat and electricity, it is highly resistant to corrosion and rust.

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depend of the type of woodit is hardwood or softwood the climate and humidity in the place where the trees came from

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Tensile strength :(resistance to streching)
Compressive strength:(resistance to being crushed)
Flexural Strength:(resistance to bending)
Hardness
Toughness
Thermal and Electrical conductivity:Wood is a good insulator of heat and electricity
Sound Conductivity:Used as a material to make certain musical instruments
Colour:different woods have different colours
Density:Wood is a light material

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Is the ability of a materialto be strech into a wire

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Is the abiliti of a material to be deformed (it has to be elastic)is the oposite of rigidity.

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NATURAL: WOOD ,BEECH,OAK,CHERRY,EBONY, etc.
METALS: iron,gold,silver,aluminium,copper,etc.
PLASTIC :rubber
TEXTILESwool, silk, cotton, hemp, linen, etc.
CONSTRUCTION: marble, slate, clay, plaster, etc.