:] help w/ science home work!please!?

Question

can some one pick a question and answer it.[[or more]]
here i go:
1)A hot dog is cooked....is that a physicall change or a chemical change and y?

2)salad dresing and mayo r being mixed....physical oor chemical change...y?

3)water boiling?physical or chemical....Y?

Answer 1

I believe the first is physical. All it does is get hotter. I do not believe any electrons or protons are moving around.

Answer 2

2) Physical, if you let the mixture sit for a while it will settle out
3) Physical, you are not changing the chemical composition