Mixtures <ul><li>By the end of the lesson you should be able to: </li></ul><ul><li>Describe a composite material and give ...
Types of mixtures Hairspray Salad dressing Hair gel Shaving foam Milk of Magnesia Salty water Example Liquid dispersed in ...
Colloids Aerosols, foams, gels and emulsions are all colloids. A colloid is a mixture in which one substance is mixed as f...
Composites In a way composite materials are mixtures.  They are mixtures of different materials.  An example is reinforced...
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Mixtures

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Mixtures

  1. 1. Mixtures <ul><li>By the end of the lesson you should be able to: </li></ul><ul><li>Describe a composite material and give an example of one </li></ul><ul><li>Describe the difference between a solution and suspension </li></ul><ul><li>Explain what a colloid is and give examples </li></ul>
  2. 2. Types of mixtures Hairspray Salad dressing Hair gel Shaving foam Milk of Magnesia Salty water Example Liquid dispersed in a gas Aerosol Liquid dispersed in a liquid Emulsion Liquid dispersed in a solid Gel Gas dispersed in a liquid Foam A fine powder mixed with a liquid but not dissolved Suspension A substance that has dissolved in something else Solution What is it? Name
  3. 3. Colloids Aerosols, foams, gels and emulsions are all colloids. A colloid is a mixture in which one substance is mixed as fine drops or bubbles in another substance. Bubbles of gas Liquid A foam is gas bubbles in a liquid
  4. 4. Composites In a way composite materials are mixtures. They are mixtures of different materials. An example is reinforced concrete. It is a mixture of concrete and steel mesh. By combining two materials to make a composite you can often get the benefit of the properties of both.
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