Question

Which of the following is an example of a physical change, but

not a chemical change?
a
a water pipe freezes and cracks on a cold night
b
a tree stores energy from the Sun in its fruit
a log gives off light and heat as it burns
d
a penny left outside slowly turns green

Answer 1

A water pipe freezes and cracks on a cold night

Answer 2

A

Step-by-step explanation:

Water freezing and thawing involves no chemical change. It has a chemical formula of H2O whether it is ice or water.