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Listed under:  Science  >  Matter  >  Chemical compounds  >  Inorganic compounds  >  Salts  >  Salt
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Solutions to recovering salt

A saline solution is a mixture containing salt (solute) and water (solvent). Salt can be separated from water using some physical separation techniques such as evaporation. Watch the experiments in this clip to see two methods of recovering salt from solution. Do you think these are examples of physical or chemical changes?

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The Reaction of Metals with Acid

Students use this simulation to learn that react with hydrochloric acid to produce salt and hydrogen and find out how to test for hydrogen gas. The notice that sodium reacts violently and that magnesium reacts more quickly than zinc but that the hydrogen gas test is positive for both. Word equations are provided for all reactions.