Question

Decide whether each example is a physical change or a chemical change. Tell me if my answers are right or wrong. **Answers are not beside the questions so deal with it sorry!!**

1. Water boiling into steam
2. An ice cream melting
3. A bicycle rusting in the rain
4. A banana turning brown
5. Tearing paper into pieces
6. A candle wick burning
7. Water freezing into ice
8. A carton of milk going sour
9. A loaf of bread cut into slices
10. Burning toast in the toaster

Answer 1

My Answers:

1. Physical
2. Physical
3. Chemical
4. Physical
5. Physical
6. Chemical
7. Physical
8. Chemical
9. Physical
10. Chemical

Answer 2

You're correct except for the banana. Bananas turn brown because sugars (or something, lol) oxidize in air, or because they make ethane when they are ripening and the reaction keeps going (answers depending on whether or not you've opened the banana).

Answer 3

@SapphireMoon so is #4 right or wrong, should it be both physical and chemical.

Answer 4

4 is wrong, @Firejay5. It should be a chemical change (oxidation).

Answer 5

@SapphireMoon Are the rest of the answers correct besides #4? I have changed that answer to Chemical Change

Answer 6

Yeah they're all fine.