Chemistry Quiz 3 Chapter 7-8

Standard units for pressure in (atm) is

1.00 atm

Standard units for pressure in (mmHg) is

760 mmHg

Standard units of pressure for (Pa) is

101,325 Pa

Standard units of pressure for (psi) is

14.7 psi

1 torr=

1/760 atm

ideal gas law is

PV=nRT

Boyles Law is

P1V1=P2V2

Charles Law is

V1/T1 = V2/T2

Gay-Lussac’s Law

P1/T1=P2/T2 (T must be in K, P must be in the same units)

Combined Gas Law is

P1V1/T1 = P2V2/T2

Attractive forces are caused by

the attraction of an electron rich area of one compound to an electron poor area of another compound

Stronger attractive forces predict

higher boiling points and lower vapor pressures at a given temperature

Weakest intermolecular force is

London Dispersion Force

Strongest intermolecular force is

Ionic Attraction

Whats the only force between non polar molecules?

London Dispersion Forces

Dipole-Dipole Attractions are between

Polar Molecules only (molecule has a permanent dipole)

Hydrogen Bonding is between

Polar molecules only (must contain H ion bonded to electronegative atom)

Ion Dipole Force is between

A polar compound and ionic compound

Ionic Attraction is

oppositely charged ions attack eachother

Small # carbons =

lower boiling point

Branched alkenes have

lower boiling points

Hydration is when

all the water molecules surround the ion

Oils have

cis carbon-carbon double bonds

Phospholipids

amphipathic, has a glycerol backbone, 2 fatty acids

Solution is

a homogenous mixture composed of 2 or more compounds or substances (can be solids, liquids, or gases)

Solute

Minority Complex

Solvent

Majority Complex

Colloids

particles must be 1 and 1000 nm in diameter that are dispersed evenly in a substance without settling out (EX: milk or fog)

Suspension

diameter of particles > 1000nm, heterogeneous mixture, eventually particles settle (EX: blood, dressing)

Unsaturated Solution is

does not contain the maximum amount of solute that the solvent can hold (EX: sugar in coffee, more can be added if needed)

Saturated Solution

solution contains all the solute that can possibly be dissolved (EX: honey is a natural saturated solution of sugar and water particles)