The weather officials have been reminding us of an important event that's going to affect how soon or how late the Sun will rise and set. What's the name of this event?

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.

What conclusion can you draw from this experiment about the components of the black ink?

What is the mass of 0.750 mole of aluminum oxide, al2o3?