Question

Why is decomposition of sugar irreversible? Why?

Answer 1

Explanation:

Sugar crystals do not melt, but instead decompose in a heat sensitive reaction termed 'apparent melting', according to new research. ... “The loss of crystalline structure in sucrose, glucose, and fructose has been shown to be due to the kinetic process of thermal decomposition

Answer 2

Answer:

Heating sugar melts it from solid to liquid state and it is a physical change. This change is reversible and does not involve formation of any new substances. ... then The change is irreversible and is thus a chemical change.

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