Ch. 15 Chem Test
Terms
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- Properties of Water
-
High specific heat capacity
High boiling and freezing points
Low vapor pressure
High surface tension - Solute
- Gets dissolved
- Solvent
- Does the dissolving
- Electrolyte
- Solute that will separate into ions when melted or dissolved (so it will conduct electricity)
- Alloy
- Solid solution
- Emulsion
- Colloid consisting of a liquid within a liquid
- Solution (Examples of)
- Kool-aid, brass, air
- Colloid (Examples of)
- Whipped cream, milk, blood, mayo
- Suspensoin (Examples of)
- Muddy water, oil + vinnegar, dressing
- Polar molecules will dissolve in...
- water (which is a polar solvent)
- Most substances become ____ as temp. increases
- more soluble
- Gases become _____ as temp. increases
- less soluble
- Molarity formula
- Moles solute / Liter solution
- Molality formula
- Moles solute / kg solvent
- Molality is/is not affected by temp.
- is not
- Colligative properties
- freezing point depression, boiling point elevation
- Change in temp. formula
- k x molality x # particles
- New B.P. formula
- pure B.P. + change in temp.
- New F.P. formula
- pure F.P. - change in temp.
- Lewis Dot polar vs. nonpolar
-
Polar - lone pairs and/or the molecule is asymmetrical
NonPolar - no lone pairs and the molecule is symmetrical - Dilution
- M1V1 = M2V2
- % by volume (v/v)
- volume of solute x 100 / volume of solution
- % by mass - volume (m/v)
- grams solute x 100 / volume of solution
- % by mass (m/m)
- grams solute x 100 / total grams solution
- ppm
- grams solute x 10^6 / total grams solution