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6th Grade Science / Lesson 8 - Other Types of Mixtures

Other Types of Mixtures

What will we be learning today?

  • In this lesson, we are going to learn all about what other types of mixtures are there.

  • What Other Types of Mixtures Are There?

    What if you wanted to make tea from an instant tea mix? All you have to do is add water to the instant tea and stir. What happens to the tea particles and water as you stir?


    The tea particles are soluble in water. Soluble means "can be dissolved." As the tea particles dissolve, they spread evenly through-out the water. The result is a mixture that looks the same throughout the pitcher.


    Solution

    Tea is a special kind of mixture called a solution. A solution is a mixture of one substance dissolved in another so that the properties are the same throughout. All parts of a solution have the same properties, such as color, odor, and taste.




    Sugar water is a solution. The sugar in sugar water is an example of a solute . The solute is the substance that becomes dissolved. The water in sugar water is an example of a solvent . A solvent is the part of a solution that dissolves a substance.


    In a sugar solution, the solute (sugar) is a solid. The solvent (water) is a liquid. Instant tea is a also a solid-in-liquid solution.

     

    However, there are many other kinds of solutions. Solutions may contain any combination of solids, liquids, and gases.


    Alloy

    Most "metal" objects around you are actually solid solutions called alloys. Alloys are solutions of one or more metals and other solids. Alloys are made by heating, melting, and mixing the parts together. The solution then cools and hardens. The parts remain dissolved in each other in the solid phase


    Alloys are used to make all sorts of objects. Most gold jewelry is made from 14-carat gold, an alloy of gold, copper, and silver. Fancy silverware is made from sterling silver, an alloy of silver and copper. Pennies once were made of pure copper but now are made of an alloy of copper and zinc.


    Let's Review What We Learned Today!

  • Now complete your PDA!