Thank you very much, Miss Fong. For example, salt is a pure substance made only of sodium chloride. None of these examples is a chemically pure substance. Sea water is not pure because it is a ...

If you’re looking for a quick way to melt ice—especially over large areas like a driveway—then rock salt is probably the best ...

A little water helps expose the sodium so it can react with the chlorine gas. The reaction releases a lot of heat as the ionic compound sodium chloride is formed. A sodium and chlorine atom are near ...

"When the weather turns cold, windy and snowy, many of us prefer to stay indoors and keep warm at home," Darci Webber writes.