Which of the following is not an assumption about an ideal gas? a. there are no intermolecular forces of attraction. b. the molecules do not collide with each other. c. the molecules have no kinetic energy. d. the molecules occupy no volume.

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.