MARKING BRAINLIST! Find out the chemical equations.

Which fact represents evidence for the big bang theory?

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.

Can someone me with 3 and 4 plz. this is for masteries test.