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CHEMISTRY [2 Mark Question Answer]

Elements, Compounds and Mixtures · ICSE STD 8 (ICSE - English Medium). 3 questions.

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[2 Mark Question Answer]

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3 questions · timed · auto-graded

Question 12 Marks
Why is iron sulphide a compound ?
Answer
Iron sulphide is a compound which can be broken into the elements iron and sulphur they both have different properties. The properties of compound are entirely different from there of its constituents elements.
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Question 22 Marks
How is sodium chloride different from its constituent elements ?
Answer
The properties of sodium chloride are completely different from those of sodium and chlorine. Sodium is a soft, highly reactive metal. Chlorine is a poisonous non$-$metallic gas while sodium chloride is a very useful non poisonous compound which is added to our food to get minerals and also to add taste to it.
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Question 32 Marks
Define : Compounds
Answer
Compounds are pure substances composed of two or more elements in definite proportion by mass and has properties, entirely different from those of its constituents elements.
Compound, are made up of different types of atoms combined chemically.
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[2 Mark Question Answer] - CHEMISTRY STD 8 Questions - Vidyadip