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Physical changes involve changes in the arrangements and spacing of particles but no new substances are formed. Which of the following is an example of a physical change?
- A Baking a cake
- B Milk going sour
- C Petrol burning
- D Water evaporating
That's Correct!
It's Wrong!
Water evaporating is an example of a physical change because it involves a change in the arrangement and spacing of water particles without the formation of any new substances. During evaporation, water molecules gain enough energy to break their intermolecular bonds and escape into the air as water vapor. However, the chemical composition of water remains the same before and after evaporation. Therefore, no new substances are formed, making it a physical change.
