Question

(i) Smoke and fog are aerosol how they differ from each other?
(ii) Name the element which melts when kept on the palm.
(iii) What is meant by pure substances. Give examples.​

Answer 1

Answer:

(i) Smoke and fog are aerosol how they differ from each other?

(ii) Name the element which melts when kept on the palm.

(iii) What is meant by pure substances. Give examples.

Answer 2

Answer:

1) In smoke and fog, dispersion medium is same, i.e., air but they differ in dispersed phase. ... In smoke, solid carbon particles are dispersed in air while in fog, liquid water particles are dispersed in air.

2) element gallium

3) The substances that are free from any kind of mixture and contain only one kind of particle are pure substances. Examples of pure substances are iron, aluminum, silver and gold.

Explanation:

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