Answer the following question by entering the numeric value with appropriate units. if the length of one side of a square is 12.0 m, what is the perimeter of the square?

Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.