- Water is a kind of substance
- Sugar is a kind of pure substance
- Sugar dissolves in water when they are combined
- Hence, sugar dissolving in water is an example of one substance dissolving in another substance

- Sugar dissolving in water is an example of one substance dissolving in another substance
- A solution is formed by one substance being dissolved in another substance
- Hence, sugar will form a solution when it dissolves in water

- Sugar will form a solution when it dissolves in water
- When one substance is dissolved in another substance then the molecules of that other substance exist in solution
- Therefore, sugar molecules exist in solution when it forms solution with water

Hence, sugar molecules exist in solution when it forms solution with water
Q: Sugar is made up of many molecules. When sugar is dissolved in water, what happens to these molecules?
Context:
- Water is a kind of substance 
- When one substance is dissolved in another substance then the molecules of that other substance exist in solution 
- A solution is formed by one substance being dissolved in another substance 
- Sugar is a kind of pure substance 
- Sugar dissolves in water when they are combined