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Is Matter Around Us Pure? — Science STD 9 — Question

CBSE BoardEnglish MediumSTD 9ScienceIs Matter Around Us Pure?5 Marks
Question
List five characteristics by which compounds can be distinguished from mixtures.
✓

Answer

MIXTURES
COMPOUNDS
i
A mixture can be separated into constituents by the physical processes.
i
A compound cannot be separatwd into its constituents by the physical processes.
ii
A mixture shows the properties its contituents.
ii
The properties of a compound are entirely different from those of its constituents.
iii
Energy is usually neither given out nor absorbed in the preparation of a mixture.
iii
Energy is usually given or absorbed during the preparation of a compound.
iv
The composition of a mixture is variable.
iv
The composition of a compound is fixed.
v
A mixture does not have a fixed melting point, boiling point, etc.
v
A compound has a fixed melting boiling point etc.

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