- No chemical reaction occurs: When sugar is dissolved in water, the sugar molecules disperse and become evenly distributed throughout the water. However, the molecular structure of both sugar and water remains unchanged. There are no chemical reactions taking place between the two substances.
- Reversibility: Dissolving sugar in water is a reversible process. If you evaporate the water from the sugar-water solution, you can recover the original sugar. This further supports the idea that the change is physical rather than chemical.
In summary, mixing sugar in water is a physical change because it involves the dispersion of sugar molecules without altering their chemical structure and because the process is reversible.
