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Solutions Unit
Solubility, Saturation, Molarity, Polarity, Solutions, pH
27
Chemistry
10th Grade
05/09/2010

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Term
3 Identifying Characteristics of a pure substance
Definition
1. One kind of atom/matter
2. Cannot be decomposed into sim. subs.
3. definite phys./chem. props.
Term
types of matter classified as a pure substance
Definition
1. elements
2. compounds
Term
Heterogeneous mixture types
Definition
Colloid,Emulsion, Suspension
Term
Homogeneous mixture types
Definition
alloy, amalgam, tincture
Term
characteristics that make a mixture homogeneous
Definition
a solutions has a solvent and a solute and when the solute dissolves in the solvent it becomes homogeneous
Term
Colloid
Definition
mixture consisting of tiny particles suspended in a liquid, hetero, MILK
Term
suspension
Definition
spontaneously separates overtime (hetero) SAND & WATER
Term
alloy
Definition
a substance made by melting 2+ elements together, at least one of them a metal (homo) BRONZE
Term
emulsion
Definition
any mixture of 2+ immiscible liquids in which 1 liquid is dispersed in the other (hetero) OIL & VINEGAR DRESSING
Term
tincture
Definition
medicinal mixture that contains alcohol (homo) MOUTHWASH
Term
amalgam
Definition
an alloy of mercury (homo) DENTAL FILLINGS
Term
Molarity
Definition
measure of concentration in mols of solute per liter of solution
Term
3 factors that increase rate of dissolving
Definition
Mixing, Surface Area, Temperature
Term
Temperature (Increasing dissolving)
Definition
solubility of solid increases as temp increases
Term
Surface area (increasing dissolving)
Definition
surface area is increased when decreasing size of solute
Term
Mixing (increasing dissolving)
Definition
brings fresh solvent into contact with undissolved solid
Term
On a molecular level oil doesn't mix with water why?
Definition
the oil cannot mix with the H20 because it is nonpolar and therefore doesn't have a partial positive/negative charge and no pull so the polar water doesnt have anything to "latch onto"
Term
Describe what is happeninng at the molecular level when salt dissolves water
Definition
The 2 H's on the H20 are positive and the Cl on the salt is negative, and the O on the H20 is negative and the Na on the salt is postive so the opposite charges attract causing the ionic bond of NaCl to be broken
Term
hydrochloric acid nomenclature
Definition
HCl (aq)
Term
Nitric Acid (nomenclature)
Definition
HNO3
Term
Sulfuric Acid (nomenclature)
Definition
H2SO4
Term
Acetic Acid (nomenclature)
Definition
HC2H3O2
Term
Strong vs. Weak Acid
Definition
Strong- completely disassociates in H20, forming H+ and an anion
Weak- doesn't completely disassociate in H20 to give H+ and the anion
Term
Strong vs. Weak base
Definition
Strong- disassociates 100% into the cation and OH-
Weak-do not furnish OH-ions by disassociation, instead, they react with H20 to generate OH- ions
Term
Acids
Definition
Sour Tasting, Typically gases or liquids, donates H+ (donating a proton), reacts w/ metal to create hydrogen gas
Term
Bases
Definition
Typically solid form, slippery in solution, conduct electricity, increases OH- in a solution, anything that accepts a proton
Term
Titration (used for?)
Definition
determine the unknown concentration of a reactant
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