Class 8 · Science · Curiosity

8. Nature of Matter: Elements, Compounds, and Mixtures

Try question 1

Water (H₂O) is

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Answer and explanation

Answer: B. a compound

Hydrogen and oxygen are chemically combined in a fixed ratio.

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Try question 2

Air is

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Answer and explanation

Answer: C. a mixture

Air is a mixture of nitrogen, oxygen and other gases in no fixed ratio.

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Try question 3

The chemical symbol of iron is

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Answer and explanation

Answer: C. Fe

Fe comes from the Latin word ferrum.

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