mowing the lawn *\nchemical change\nphysical change\ncorroding metal *\nchemical change\nphysical…
mowing the lawn *\nchemical change\nphysical change\ncorroding metal *\nchemical change\nphysical change\nbleaching your hair *\nchemical change\nphysical change
Answer
Brief Explanations:
- Mowing the lawn only changes the shape and size of the grass, without forming new substances, so it is a physical change.
- Corroding metal involves a chemical reaction between the metal and substances in the environment (such as oxygen and water), forming new substances like metal - oxides, so it is a chemical change.
- Bleaching hair uses chemicals to react with the pigments in the hair, changing their chemical structure, so it is a chemical change.
Answer:
- mowing the lawn: physical change
- corroding metal: chemical change
- bleaching your hair: chemical change