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Man-Made and Raw Materials and their Properties

 
Material Facts
Different types of materials

Raw Materials

Man-Made (Synthetic) Materials

Changed - Natural Materials

Recycled - Materials

Combined Materials

Metals

man carrying wood
 

Raw Materials : These materials are found naturally - they come from the earth. Some natural materials come from underground:

Coal
Stone
Oil
Sand
Rock
Clay
Metals
Slate

Some  natural materials come from living things:

Wool
Rubber
Leather
Cotton
Soft Wood
Hard Wood
Silk

Man-Made (Synthetic) Materials : Synthetic materials have been made by people.  The raw materials must be changed before we can use them to make new materials.

Plastic
Fleece
Cardboard
Fibreglass
Polyester
Glass
Brick
Nylon

Changed - Natural Materials which have been changed:

Trees changed into Paper

Oil changed into Paint

Sand changed into Glass

Clay changed into Brick and Crockery

Recycled - Materials that have been Recycled:

Old paper into Toilet Paper

Old Plastic Bottles into Fleece

Combined Materials:

Gravel + Sand + Water + Cement = Concrete (for building)

Properties or Characteristics of materials means what things are like:

Hard or Soft?

Stiff or Flexible?

Rough or Smooth?

Transparent or Not Transparent?

Strong or Weak?

Metals :

Metals are found underground.

Gold, Silver and platinum are pure lumps.

Iron, Tin, Lead, Aluminium and Copper are found mixed in with rocks (ores).

Steel, Brass and Bronze are mixed with otehr metals to make new metals.

Properties of Metals:

Metals are strong and tough.

Some metals are good conductors of electricity.

Metals are easy to shape.

Metals can be reused and recycled.

Metals are good conductors of heat.

Metals are shiny.

Some Metals are magnetic.

Metals make a noise when hit.

Wood

Wood comes from trees and is a Natural Material

Hardwoods come from deciduous trees (trees that loses its leaves) and Softwoods come from evergreen trees (trees that don't lose its leaves.

Properties of Wood:

Floats (boats and rafts)

Acts as an insulator

Strong but flexible (bendy)

Easily Shaped

Changing wood can make it more useful:

We burn wood to produce heat.

Wood is made into charcoal for fires

Wood is made into chipboard

Mashed wood makes paper:

Paper can be recycled and it can rot.

Paper is made from wood.

Certain types of paper have different properties and are great for doing different jobs.

 
 
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