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Unit - 3.1 Elements, Compounds and Mixtures — CHEMISTRY STD 8 — Question

ICSE BoardEnglish MediumSTD 8CHEMISTRYUnit - 3.1 Elements, Compounds and Mixtures2 Marks
Question
(a) Define pure substance.
(b) State characteristics of pure substance.
✓

Answer

(a) Pure substances are substances that are made up of only one kind of particle and have a fixed or constant structure.
(b) Characteristics of pure substances :-
• Pure substances are homogeneous in nature.
• They have fixed melting and boiling points.
• They are made up of the same kind of particles.

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