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Naomi Wharton

on 13 February 2011

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Transcript of Mixtures

Mixtures Naomi Wharton A mixture contains two or more types of particles that are not chemically combined. Homogeneous Heterogeneous A mixture in which different materials can be distinguished easily A mixture in which two or more substances are So, what are they? or Mixtures come in different forms. Mixtures can be either homogeneous or heterogeneous. Solutions are of particles so small that they cannot be seen with a microscope and will never settle to the bottom of their container. In a solution, there is a solute and a solvent. Solute Substance being dissolved Solvent Substance doing the dissolving For example: homogeneous mixtures blended evenly throughout Why? Particles in a are large enough to scatter light. Particles in a , however, are too small.
The scattering of light by colloids is known as the . colloid solution Tyndall effect Colloids are whose particles are larger than those in solutions but never settle out. heterogeneous mixtures solution. A beam of light is visible as it passes through a , but invisible as it passes through a colloid For example: Solutions can also be or dilute concentrated. A dilute solution has a small amount of solute dissolved in the solvent. A concentrated solution has a large amount of solute dissolved in the solvent. Suspensions are , containing a fluid, in which particles settle out. heterogeneous mixtures The particles in a suspension are larger than those in solutions and colloids. For example: Mixtures Homogeneous Heterogeneous Colloids Solutions Suspensions Dilute Concentrated So, to review... milk paint cloud sealed
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