C) They have more than two carbons that are bonded to only one other carbon
Building a tower out of magnetic blocks and water vapor condensing on a bathroom mirror are only physical changes.
A physical change is easily reversible. It does not involve a change in the composition of a substance.
A tower built out of magnetic blocks can easily be pulled apart and water that condensed on a bathroom mirror can easily change back to vapour by heating.
All these are possible because the both processes are only physical changes.
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Explanation:
The boiling point of alcohols also increase as the length of hydrocarbon chain increases
D.
The water must be heated and removed in distillation, so thermal energy is required.
