Question

Write some terms related with occurrence of metal in detail

Answer 1

Answer:

Key Terms

• mining: The activity of removing solid valuables from the earth.

• alloy: A metal that is a combination of two or more elements, at least one of which is a metal.

• native metal: Any metal that is found in its metallic form, either pure or as an alloy, in nature.

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Answer 2

Very few metals can resist natural weathering processes like oxidation, which is why generally only the less reactive metals, such as gold and platinum, are found as native metals.

Native metals were prehistoric man’s only access to metal, because smelting is thought to have been discovered around 6500 BC.

Combining different ratios of metals as alloys modifies the properties of pure metals to produce desirable characteristics.

The aim of making alloys is generally to make them less brittle, harder, resistant to corrosion, or have a more desirable color and luster.

Metals are often extracted from the Earth by means of mining, resulting in ores that are relatively rich sources of the requisite elements.

Terms

miningThe activity of removing solid valuables from the earth.

alloyA metal that is a combination of two or more elements, at least one of which is a metal.

native metalAny metal that is found in its metallic form, either pure or as an alloy, in nature.