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TYPES OF SOLUTIONS

Chemistry 51 Chapter 8 1 TYPES OF SOLUTIONS A solution is a homogeneous mixture of two substances: a solute and a solvent. Solute: substance being dissolved; present in lesser amount. Solvent: substance doing the dissolving; present in larger amount. Solutes and solvents may be of any form of matter: solid, liquid or gas. Some Examples of SOLUTIONS Type Example Solute Solvent Gas in gas Air Oxygen (gas) Nitrogen (gas) Gas in liquid Soda water CO2 (gas) Water (liquid) Liquid in liquid Vinegar Acetic acid (liquid) Water (liquid) Solid in liquid Seawater Salt (solid) Water (liquid) Liquid in solid Dental amalgam Mercury (liquid) Silver (solid) Solid in solid Brass Zinc (solid) Copper (solid) SOLUTIONS form between solute and solvent molecules because of similarities between them.

Solutions containing ions are conductors of electricity and those that contain molecules are non-conductors. Substances that dissolve in water to form ions are called electrolytes. The ions formed from these substances conduct electric current in solution, and can be tested using a conductivity apparatus (diagram below).

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