What you’ll be given

• Basic PT with masses and numbers• Gas constant• That’s it…it’s a little light on the ‘complicated’

math. You should definitely know pv=nrt, density, %comp, atoms molegrams, calorimetry (q=…),

Important Vocab

• Avogadros number• effective nuclear

charge• Electron Affinity• Electron screening• group 1 aka:• group 16 aka:• group 17 aka:• group 18 aka:• group 2 aka:

• Heat of formation• heat of reaction• heisenbergs

uncertainty principle• Ionization energy• lattice energy• orbital• specific heat• Weak/strong acids• Work

Practice Problem

• What are the trends on the PT for:• Ionization Energy:• Electronegativity:• Atomic Radius:• And WHY are there those trends

At 20oc, what volume would 16 grams of N2 take up (1atm)?

• What is its density at that temperature?

Copper+ Silver Nitrate → Ag + Cu(NO3)2

• Convert names formula• Balance it• Give the net ionic equation• If 234.5 grams of copper reacted, how many

grams of Cu(NO3)2would be produced• How many nitrate ions are there?• How many atoms of copper is that?• %of Silver in Silver Nitrate

Copper+ Silver Nitrate → Ag + Cu(NO3)2

• Convert names formula

Copper+ Silver Nitrate → Ag + Cu(NO3)2

• Balance it

Copper+ Silver Nitrate → Ag + Cu(NO3)2

• Give the net ionic equation

Copper+ Silver Nitrate → Ag + Cu(NO3)2

• If 234.5 grams of copper reacted, how many grams of Cu(NO3)2would be produced

Copper+ Silver Nitrate → Ag + Cu(NO3)2

• How many nitrate ions are there?

Copper+ Silver Nitrate → Ag + Cu(NO3)2

• How many atoms of copper is that?

Copper+ Silver Nitrate → Ag + Cu(NO3)2

• %of Silver in Silver Nitrate

KrF2

• Lewis structure• # sigma and # pi bonds• Hybridization• Electronic geometry• Molecular geometry• Polarity

CH2O

• Lewis structure• # sigma and # pi bonds• Hybridization• Electronic geometry• Molecular geometry• Polarity

F2-

• Bond order?

Cl

• Dot diagram• Expanded configuration:• Quantum numbers for valence electron

Significance of each step?

• 193 mL of O2 was collected over water on a day when the atmospheric pressure was 762 mmHg. The temperature of the water was 23.0 o C. How many grams of oxygen were collected? (At 23.0 o C the vapor pressure of water is 21.1 mmHg)

Energy