Answer pls. use correct symbols, full sentences

Electric charge is what ? a. kinetic energy b. radiation c. discovery d. electricity

The name of the ion, s2-, is: sulfurous ion sulfide ion sulfur ion sulfate ion

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.