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Two samples of a similar substance from different containers were investigated. The curve below represents the variation of temperature with time when heated separately. a) Explain...

Two samples of a similar substance from different containers were investigated. The curve below represents the variation of temperature with time when heated separately.

a) Explain the variation in the curves.
Sample I
Sample II
b) Common salt is sprinkled on roads during winter in temperate countries.

Answers

(a) (i) particles gaining kinetic energy, temperature increasing.
(ii) Particles rearranging themselves as they change from liquid to gas
and all the heat supplied used for this rearrangement and no temperature rise occurs.

(b) Melting point of naphthalene

Kavungya answered the question on March 28, 2019 at 13:18

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