Acube 20 cm could contain how many millimeters of fluid

Does the energy in a solid increase or decrease when changing to a liquid?

Based on its chemical properties, identify the position of each chemical family on the periodic table.

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.