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Statue: steel
Sardine tin: aluminium
Wires for an electrical circuit: copper

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Coca-cola can: aluminium
Boeing: Aluminium

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Copper: its a bright red-coloured metal that has been used to make ornaments, coins and some weapons
Tin: Is a silver coloured shiny metal that resists corrosion and it isnt toxic.
Aluminium: is a common element. It is white cheap and easy to recycle
Zinc: it is a bluish-white in colour and is one of the least common metals

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Iron: when is less than 0.1% of carbon is called iron
Steel: is a ferreous metal made mostly of iron (and from 0.1% to 2% of carbon)
Cast iron: is made of iron and 2% to 6.67% of carbon

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Cast iron

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Animal            Plant        Mineral
wool                  Linen      Marble                                   Cork        Clay
Silk           Sand

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natural                       processed
lycra                              steel
slate                               latex
silk brass

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Cow - Milk - Yogurt
Sheep - Wool - t-shirt
Petrol - Plastic - Plastic bag
Sand - Glass - Windows
Chicken - eggs - omelette

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Each format has certain characteristics or propierties that make it suited to a certain use

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Umbrella: plastic, metal
Chair: Wood, metal
Frying pan: steelk

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Shoe: cloth, plastic
Partition wall: rock,mineral
Streetlight: iron,glass
Stay cables: stee

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-They are materials taken from nature. They are process into other natural materials
We can classify them into three groups: Mineral,  Animal and plant

-We refine raw materials to obtain natural material

-When we proccess raw materials they become processed materials
We obtain products from natural and processed materials

Any material used to construct an object is called a technical material

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-Tensile strength
-Copressive strength
-Flexural strength
-Hardness
-Thoughness
-Thermal and electrical conductivity
-Sound conductivity
-Colour
-Density
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-Advanteges
Hardness and resistance
-Disadvanteges
Combustion and insect attack

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Wood/plastic chair: Some advantages are that they are more resistant and they are more simple to do them.
Some disadvantages are they can burn and they can broke easily.

Silver/aluminium earring: Some advantages are  that they are luxurious. Some disadvantages are that are expensive.

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Tensile strength (resistance to stretching)
Compressive strength
Resistance
(Hardwood)
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No resistance
No strength
(Softwood)

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Natural: pine, beech, fir,
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Man-made:cork, lime
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Wood derivatives: plywood, ebony, ash, chipboard, cardboard

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metals that contain mainly iron are called ferrous metals. Metals that dont have iron in their composition are called non-ferreous metals

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Car headlight: light bulb
mattress: feathers, pier
golf club: metal

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-Ping pong racket
-Carton box
-Paper