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23 Cards in this Set
- Front
- Back
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1. single substance
2. composed of particles of 2 or more substances 3. distributed evenly amongst each other |
Solution
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A combination of two or more substances each of which keeps its own characteristics
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Mixture
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these do not settle, cannot be filtered, and do not scattered light
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solutions
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the substance in which the solute is dissolved
the substance with greater volume is this |
solvent
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the substance that is dissolved
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solute
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soluble
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able to dissolve, in the solvent
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insoluble
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unable to dissolve
forms mixture that is not homogeneous not a solution |
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examples of solution
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Liquid solutions: salt water, tap water, soft drinks, gasoline, many cleaning supplies
Gases: air, Solids: steel, alloys (brass) |
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having the same appearance and properties throughout the mixture
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homogeneous mixtures
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Are particles in solutions small or large? settle and can be filtered or never settle and cannot be filtered?
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small, won't settle out & cannot be filtered. They don't scatter light
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measure of the amount of solute dissolved in a solvent is
expressed as grams per milliliter of solvent |
concentration
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concentrated vs dilute
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in the same amount of solvent
higher amounts of solute=concentrated less solute is dilute |
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a solution that contains all the solute it can hold at a given temperature is
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saturated
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a solution contains less solute that it can hold at a given temperature is said to be
More solute can be dissolve in this type of solution |
unsaturated
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the amount of solute needed to make a saturated solution
using a given amount of solvent at a given temperature |
solubility
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what is solubility expressed in:
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grams of solute per 100 ml of solvent
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solubility of solids usually increase or decrease as temp gets higher?
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increases
more solute can dissolve at higher temps but not always |
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solubility of gases usually increase or decrease as temp gets higher?
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decreases as temp increases-solubility of gases is lower at higher temp
bubble of gas appear in hot water long before water begins to boil |
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Factors that affect how fast the solid will dissolve
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1. mixing-shaking or stirring causes solute particles to separate and spread among the solvent particles
2. Heating-solvent particles separate solute particles 3. Crushing: solute increases the amount of contact btw solute and solvent |
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a mixture in which particles of a material are dispersed throughout a liquid or gas but are large enough to settle out is
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suspension
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1. particles are insoluble (don't dissolve in liquid & gas)
2. separated by passing through filter 3. particles fairly large-scatter or block light-difficult to see through but will settle |
suspensions
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Different components of suspension are seen easily so they are
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heterogeneous mixtures
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Examples of suspensions
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medicines: antacid,
dirty air snow globe |
