2. The percent composition of a compound was found to be 63.5 % silver, 8.2% nitrogen, and 28.3 % oxygen. Determine the compound's empirical formula.

Which element forms an ionic bond with flourine? 1) fluorine 2) carbon 3) potassium 4) oxygen

The number to the right of an element's symbol (ex. c-12) identifies the of an isotope.

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.