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why we burn gold and put it in water it will sizzle?

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why we burn gold and put it in water it will sizzle?

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why is metal waterproof

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can you melt wood

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Plastic is made from naturally-occurring materials

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what's the steps for paper with tree?

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Aluminum - why was aluminum once scarcer than gold?

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Aluminum - why was aluminum once scarcer than gold?

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There was no pure sample of aluminum before the 19th century.

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why is metal found underground?

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how many types of rock are there

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what is metal made out of ?

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why when gold is very hot it will sizzle in water?

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why when gold is very hot it will sizzle in water?

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is copper metal?

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how is cardboard made?

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why is gold yellow

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what is the making step for paper?

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is there more material that we dont know still?

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Plastic – a modern material

Perhaps the most significant modern material – in all its forms – has been plastic. Plastic is a general word used to describe a range of synthetic products, made from natural materials such as oil or coal. Celluloid was the first plastic, made in 1870 from wood (cellulose) by US inventor John Hyatt. But it was the invention of Bakelite in 1909, the world’s first synthetic plastic by the US chemist Leo Baekeland that started the modern plastics industry.

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how do you identify types of rocks?

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is bronze a type of metal

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Is metal the same as copper?

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why is carboard in sizes

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who disvoered copper

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can metal be inside rocks

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what is the hardest material in the world?

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what is the hardest material in the world?

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what is rock made of

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was gold yellow at first

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is metal same as iron?

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how is metamorphosis rocks made if ignites and semimetal rocks are joined even when they are hard

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Is gold a type of metal?

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why is dimaond so rare

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Humans first used metals about 5,000 years ago. The first metals people used were those that occurred naturally on the surface or were easy to mine and make into tools or jewellery, e.g. copper, silver and gold. Later they learned to make alloys such as bronze (from tin and copper); they learned to extract iron from ores and then to make steel.

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what is copper made of

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is diamond a rock