High levels of cholesterol can first lead directly to
a. strokes
b. arteriosclerosis
c. heart attacks
d. heart failure

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.