b) Classify the following into elements, compounds and mixtures. (3)
(a) Lithium
(b) Soil (c) Salt solution
(d) Gold
(e) Calcium carbonate
(1) Blood
(g) Silicon
(h) Coal (i) Air
() Soap
(k) Methane
(1) Carbon dioxide
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Answer:
Explanation:
Elements →
The elements are regarded as the building blocks of the universe.
Silicon,gold,lithium,etc...
Compounds →
It is a pure substance made up of two or more elements chemically combined in a fixed proportion by mass.
Calcium carbonate ,methane,carbon dioxide ,etc...
Mixture →
It is a substance containing two or more substance in any proportion.
Sugar ,soil,air,coal,soap,blood,etc...
Hope this helps you to figure out...
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