CaCl2 is used to lower the freezing point of water in applications such as the prevention of ice formation on roads and as a de-icer. (i) (ii) In lecture 2, six classifications of materials were discussed (metals, ceramics/glasses, semiconductors, polymers /plastics, composites, and biomaterials). Which classification of materials does CaCl2 belong to? Explain your answer in one or two sentences. What type(s) of bonding are found in solid CaCl2?