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Chemistry CBSE Live product
Class 8
Nature of matter: Elements, compounds and mixtures
Elements and its properties
9.
Nature of elements
Question:
3
m.
Answer the following question
:
Write a short note on nature of elements.
i.
Elements are made of
only one kind of mixture
only one kind of compound
only one kind of atom
only one kind of molecule
.
ii.
Nature:
Impure substance
Heterogeneous substance
Pure substance
Mixture
.
iii.
Separation:
Can be broken down into simpler substance by physical methods
Cannot be broken down into simpler substance by both physical and chemical methods
Can be broken down into simpler substance by both physical and chemical methods
Can be broken down into simpler substance by chemical methods
iv. Example:
Oxygen, carbon, iron
Gold, silver, salt
Sulphur, iodine, sugar
Sodium, chlorine, water
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