What is potential energy?
the energy of change
the energy of position or composition
the energy of mass or volume
the energy of motion

Enzymes affect the reactions in living cells by changing the

6. using 3 – 4 sentences explain (in your own words) why water expands when it freezes? 7. using your knowledge of colligative properties explain whether sodium chloride or calcium chloride would be a more effective substance to melt the ice on a slick sidewalk. use 3 – 4 sentences in your explanation.

Elements in group 2 are all called alkaline earth metals. what is most similar about the alkaline earth metals?