Answer:
dissolving sugar in water is a physical change.
cooking a hamburger is a chemical change.
boiling an egg is also a chemical change.
burning a match is a chemical change.
Step-by-step explanation:
1. because we can evaporate water to separate water and sugar.
2. cooking anything with heat or fire is a chemical change.
3. egg became hard boiled can not change back into liquid stuff or raw.
4. anything that gets burned down is a chemical change.