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Metals and Non-metals
Earth is an abundant source of material. Man has intensively studied the properties of these materials extensively and found new methods of using them. The air we breathe, the water we drink, stones and rocks, almost everything that is around us, are all useful to man for ..
Metals and Non-metals
The progress of the civilization was first benchmarked by man's increasing knowledge and usage of metallic deposits in the earth's crust. Early man used stones, bones and wood to fulfill their requirements of hunting, cooking and buildin..
Metals, Non-metals and their Extraction
Introduction - Earth is an abundant source of materials. The air we breathe, the water we drink, stones and rocks, almost everything that is around us, are all useful to man for some purpose or the othe..
Metals and non-metals
Elements can be further divided into metals and non-metals..
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