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Mixtures

Mixtures and solutions

TermDefinition
Mixture 2 or more substances that are physically put together but may be separated from each other; substances have not changed permanently, still have their own properties
Heterogeneous physical mixture of matter where the different substances can be seen with either the nakd eye or under a microscope
Homogeneous physical mixture of matter where one substance completely dissolves into the other and it appears to be only 1 substance; looks the same under a microscope
Solution a homogeneous mixture where 2 or more substances are put together and the particles of one spread out and dissolve into another
Colloid heterogeneous, physical mixture where the particles of one substance connect with another but can still be seen separately under a microscope
Suspension heterogeneous, physical mixture where one substance will separate from the others over time due to gravity, mass, and buoyancy. SHAKE to mix
Solute the smaller part of a solution, usually a solid, that is dissolved
Solvent the larger part of a solution, usually a liquid, that does the disolving
Diluted solution a solution that has a small amount of solute and is considered weak in taste
Concentrated solution a solution that has a large amount solute and is considered strong in taste
Insoluable a substance that cannot be dissolved
Saturated the point at which a solvent can no longer dissolve the solute at a given temperature and pressure
Rate of Dissolving the amount of time it takes a solute to dissolve completely
Universal Solvent Water
Ways to change the rate of dissolving 1. Stirring solution 2. Raise the temperature of solution 3. Make solute particles smaller
Filtration used to separate solid particles from a liquid or gas ; you pour the mixture through a filter paper in a funnel & the solid particles will be trapped in the filter allowing the particles of the liquid or gas to pass through
Sifting used to separate smaller size solids from larger solids; the mixture is put into a container that has a screen material at the bottom (sieve) with holes to separate them. You shake & the smaller particles go through the screen opening leaving the larger particles on top of the screen.
Chromatography Used to separate and analyze 2 or more solutes in a solution. A few drops of the solution are put on a piece of filter paper, which is then put in a neutral solvent. The substances in the solution that dissolve most easily travel the furthest up the paper. Substances that don’t dissolve easily do not travel very far.
Floatation Used to separate solids that are buoyant from the remaining liquid in a mixture . The solids are stirred and when they float to the top, they are skimmed off the surface and put into a different container.
Evaporation/Distillation Used to separate a substance that has dissolved in a liquid solution. You heat the solution to one of the substance’s boiling point. That material will turn into a gas and evaporate, leaving the other materials behind.
Magnetic Attraction Used to separate iron, cobalt, or nickel materials from a mixture; you stir a magnet through it and it pulls out the magnetic material
Alloy a type of solution that has at least 1 metal dissolved in it
Created by: ndouglas66