Question 6 (1 point)


A highway engineer is researching de-icing compounds for clearing ice from streets in winter. She wants a


compound that has +2 ions and 1 ions in it. Which would work?


aluminum combined with sulfur


potassium combined with iodine


magnesium combined with chlorine


silicon combined with oxygen


Question 7 (1 point)


When CaCl, dissolves in water, which is true?


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