Question

Which of the following are physical changesBurning a matchMixing orange juice and waterFreezing a piece of iceMagnetizing a screwdriver

Answer 1

Let's remember the concept of physical change:

A physical change is a change to a sample of matter in which some properties of the material change, but the identity of the matter does not.

- Mixing orange juice and water, freezing a piece of ice, and magnetizing a screwdriver are physical changes because they are not changing the state of matter.

- Burning a match is not a physical change, it is a chemical change and that's because it is changing their composition.