CaCl2(aq) + 2K(s) --> 2KCl(aq) + Ca(s) In the above reaction, what is/are the spectator ion(s)?
a. Ca+2
b. Cl-
c. K+
d. K+ and Cl-
e. Ca+2 and K+

Which statement correctly describes metallic bonds? a. they form when certain atoms lose electrons and other atoms gain electrons. b. they involve an attraction between anions and cations. they always involvpoth a metal and a nonmetal. d. they can only form between atoms of the same element. e. they form because electrons can move freely between atoms.

Why is carbon ideal for making different compounds?

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.