The chemical changes listed are:
1. Rusting on the lock
2. Chopping wood for a fire
3. Apple rotting on the counter
4. Making cake batter and water
5. Boiling water
6. A plant going through photosynthesis
Check all that our chemical changes rust on the lock chopping wood for a fire in Apple rotting on the counter making cake batter and water boil water a plant going through photosynthesis
3 answers
Are they all chemical changes
Yes, all the listed activities involve chemical changes.