State the reason
Classify the following into element, compound or mixture
i. He and H2
ii. CO and Co
ii. Waters
iv. Gold and brass V. Iron and steel
Oss unit. Why is it needed?
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Explanation:
Elements →
The elements are regarded as the building blocks of the universe.
Sodium, Silver, Tin and Silicon are elements.
Compounds →
It is a pure substance made up of two or more elements chemically combined in a fixed proportion by mass.
Calcium carbonate, Methane and Carbon dioxide are compounds.
Mixture →
It is a substance containing two or more substance in any proportion.
Soil, Sugar, Coal, Air, and seawater are mixtures.
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