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Trail mix, club soda, concrete, salt water, sand, juice, air, mayonnaise, pudding: mixtures like these are everywhere. You see them, eat them, drink them, breathe them, even walk on them.
Mixtures may be made from any combination of solids, liquids, and gases. Air is a mixture of several gases, while mud is a mixture of dirt and water—a solid and a liquid. Can you guess what club soda is? It’s a mixture of water and carbon dioxide—a liquid and a gas.