Materials are made of matter and have a physical shape. We classify materials into two main groups: man-made and natural.
What are man-made materials?
We use natural materials to make man-made materials. Paper is made from wood and resin. Man-made metals are made by combining natural metals. Glass is made by melting sand and mixing it with minerals. Petroleum is used to make many different materials.
• Plastic is a waterproof material and can be moulded .
• Nylon and polyester fibres are made from petroleum.
• Petrol for cars is also made from petroleum.
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