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1. Classify the changes involved in the following processes as physical or chemical changes:

(b) Dissolving sugar in water

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(b) Dissolving sugar in water is a physical change because no new substance is formed, and the chemical composition of sugar remains unchanged. The process is reversible by evaporation, where the water can be removed, leaving the sugar behind. This change only alters the physical state and distribution of sugar particles within the water.

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