Sam: I’m Sam Watt from NIU STEM Outreach and this is the Sound of Science on WNIJ. I have a question from Andy today and Kate Powers, our resident chemist, will help me answer. Kate, Andy wants to know why we put salt on our sidewalks and roads to melt ice in the winter?
Kate: That’s a great question Andy. It does seem kind of magical that a solid, salt, turns another solid, ice, into a liquid. Sam, to start answering Andy’s question I have a question for you: what happens when you put table salt into water?
S: Um, I suppose it disappears right? It dissolves?