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*A substance made of 2 or more elements chemically combined
-Elements(periodic table of elements... like C is for Carbon)
CO2, H2O, NaCl (salt), Baking Soda
If it has a chemical formula it is a compound |
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*Two or more substances, elements, compounds or both, that are together in the same place but are not chemically combined
*Beach Sand, Salt water
*Solutions, Supensions, and Colloids are all mixtures
* Mixtures can be homogeneous or heterogeneous |
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*Homogeneous: has the same uniform appearance and composition throughout- food coloring and water
-Many homogeneous mixtures are commonly referred to as solutions. Does not separate |
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*Heterogeneous: consists of visibly different substances or phases- the three phases or states of matter are solid, liquid, and gas
- Separates out, Suspensions |
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* Homogeneous mixture
* Solute and solvent are evenly distribued throughout
*Particles are too small to filter
* Solutions do not separate upon standing (Saline Solution, Salt Water) |
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*Solubility: the measure of how well a solute can deissolve in a solvent at a given temperature
*Temperature, pressure, and the type of solvent effect solubility
*Solute: substance being dissolved
*Solvent: what dissolves the solute
-Salt Water-
*water= solvent
*salt= solute |
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*Concentration: the amount of one material dissolved in another material
- Concentraion changes as more solute is added and/or taken away from a solution |
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*Saturated solution: A mixture that contains as much solute in it as possible (the solute won't dissolve any more)
Unsaturated solution: A mixture can dissolve more solute when added |
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*Heterogeneous mixture
*Particles settle to the bottom when undisturbed
*Particles can be recovered by filtration
*Clay in water, muddy water |
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*May be milky or cloudy in appearance
*Don't separate on standing
Can't recover particles through filtraion
*Hair gel, mayonnaise, whipped cream, jello, milk |
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