Question

**Please help
Physical changes

are only caused through burning a material.

cannot be detected by the naked eye.

do not change the identity of the substance.

change the identity of a substance.

Answer 1

Hmm...Not sure what they mean by identity. One sort of physical change would be if you change something's state of matter. Solid to liquid, liquid to gas, etc.

Answer 2

It doesn't really change the IDENTITY of the substance, just the state it is in.

Answer 3

If you burn something, that will be a chemical change, and you are changing the identity of that substance.

Answer 4

Do not change the identity. Because whenever you grow taller your identity doesnt change just you height