Question

What is the esson
chemical composition?
Classify the following changes as physical or chemical?
(1) Decay of vegetables
(ii) Formation of clouds
(ili) Burning of a candle
Give reasons for your answer
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Answer 1

Answer:

Chemical composition refers to the arrangement, type, and ratio of atoms in molecules of chemical substances. ... The molecular mass of a substance is the sum of the average masses of the atoms in one molecule of a substance. Calculations for formula mass and molecular mass are described.