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Chemistry CBSE Live product
Class 8
Nature of matter: Elements, compounds and mixtures
Pure substance and their properties
6.
Nature of compounds and mixtures
Question:
5
m.
Answer the following question
:
Explain the nature of compounds.
i.
A compound is produced only when the
elements does not combine in a fixed propotion
elements does not combine in a fixed ratio
elements combine in a fixed colour
elements combine in a fixed ratio
.
ii.
Physical methods
can break the components of a compound
can break a compound into elements
cannot break down a compound
can break down a compound
.
This is because a compound comprises
various elements that are physically combined
various elements that are mixed physically
various elements that are not combined
various elements that are chemically combined
.
A compound can be separated into its constituent
elements by chemical methods
elements by filteration
elements by magnetic separation
elements by physical methods
.
Example:
Salt
Hydrogen
Carbon
Iron
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