Today is Tuesday,October 6th, 2015

Pre-Class:Today we are reviewing.

Have your questions ready!

Today’s Agenda

• Review– In the form of worksheets– In the form of a game

Review Game Rules

• I will ask a question to the class.• Each participant (that’s you) writes down the

answer silently.– Not each group…each individual.

• After a few moments, I will say, “Compare answers.”

• Each of you will look at what the other wrote.

Review Game Rules

• Did you each get the right answer?– 2 points.

• Did one of you get the right answer?– 1 point.

• Neither of you?– For shame. 0 points.– And eternal guilt.

Review Game Rules

• The List of Do Nots:– Do not talk to each other, make noises, gesture,

give answers (my discretion here) between when the question has been read and when I say, “Compare answers.”• Doing so will result in a disqualification for that round.

Don’t believe me? Try it.

– Do not fall asleep when I’m getting scores.• If you’re not paying attention, I’m not giving you points.

Review Question 1

• What unit do scientists use to measure frequency? Hint: It’s on most radios…– Hertz (Hz).

Review Question 2

• If the atomic number of silver is 47 and the mass number is 85, how many protons does the typical silver atom have?– 47 protons.

Review Question 3

• If the atomic number of silver is 47 and the mass number is 85, how many neutrons does the typical silver atom have?– 38 neutrons.

Review Question 4

• Find calcium on your periodic tables. How many valence electrons does it have?– 2 valence electrons (both in the s sublevel).

Review Question 5

• What is calcium’s valence shell principal quantum number?– n=4

Review Question 6

• What is calcium’s valence shell electron configuration?– 4s2

Review Question 7

• BONUS NON-CHEMISTRY QUESTION• You may wager any/all of your points.• Category: Movies

• What is the only movie sequel to win an Academy Award for Best Picture?– The Godfather – Part II

Review Question 8

• From the following list, pick the two elements that have the same outermost energy level (n number):

• Copper, Bismuth, Neon, Helium, Silver, Neodymium, Uranium– Bismuth (Bi) and Neodymium (Nd)

Review Question 9

• Of the following, which has the highest ionization energy:

• Gallium, Phosphorous, Potassium, Titanium, Aluminum.– Phosphorous (P)

Review Question 10

• Of the following, which TWO are part of the Pauli Exclusion Principle?A. Only two electrons per orbitalB. Fill energy levels from lowest to highestC. One electron per orbital until each have oneD. Electrons in the same orbital must spin in

opposite directionsA. Only two electrons per orbital.D. Electrons in the same orbital must spin in opposite directions.

Review Question 11

• BONUS NON-CHEMISTRY QUESTION• You may wager any/all of your points.• Category: Sports

• Between MLB Baseball, NHL Hockey, and NFL Football, only one city has a team in each league with the same two main uniform colors. Which?– Pittsburgh (Pirates, Penguins, Steelers are all black

and gold)

Review Question 12

• How many valence electrons do halogens have?– 7

Review Question 13

• Halogens:A. Lose electron(s) to become anionsB. Lose electron(s) to become cationsC. Gain electron(s) to become anionsD. Gain electron(s) to become cations

C. Halogens gain an electron which creates an anion.

Review Question 14

• What is the noble gas electron configuration of nickel?– [Ar] 4s2 3d8

Review Question 15

• How many sublevels are there in the n=5 energy level AND what are their letters?– 4: s, p, d, f

Review Question 16

• More electronegative atoms:A. Attract electrons strongly by themselvesB. Repel electrons strongly by themselvesC. Attract electrons strongly in compoundsD. Repel electrons strongly in compoundsE. Attract electrons weakly in compounds

C. More electronegative atoms attract electrons strongly in compounds.

Review Question 17

• Without using a calculator, calculate the approximate atomic mass of a vanadium atom if 90% of its atoms have a mass of 50 amu and 10% of its atoms have a mass of 52 amu. Will the atomic mass be closest to:

• 50; 51; 52– 50. A non-weighted average would be 51, but

with 90% of atoms weighing just 50 amu, the weighted average must be closer to 50.

Review Question 18

• BONUS NON-CHEMISTRY QUESTION• You may wager any/all of your points.• Category: Animals

• What is the world’s fastest animal?– Peregrine falcon (up to 200 mph dives – called

“stoops”)

Review Question 19

• What specific ionic charge would you expect to find on an atom of boron?– 3+

Review Question 20

• If you increase frequency, what happens to wavelength and energy?A. Energy goes up, wavelength goes downB. Energy goes up, wavelength goes upC. Energy goes down, wavelength goes downD. Energy goes down, wavelength goes up

A. If frequency is increased, energy increases while wavelength decreases.

Review Question 21

• How many electrons are present in the valence shell of helium?– 2.

Review Question 22

• How many electrons are present in the valence shell of scandium?– 2.

Review Question 23

• Which element is this?• [Xe] 6s2 5d1

– Lanthanum.

Review Question 24

• Which subatomic particle best determines the chemical behavior of an atom?– Electrons.

Review Question 25

• What is the name for the energy required to remove an electron from an atom that has already lost one?– Second ionization energy.

Review Question 26

• How many electrons in any given atom could have the following set of quantum numbers?

• n=4, l=2, ml=2

• 2.• n=4 tells you we are looking at 2n2 = 32 e-.• l=2 tells you it’s a d sublevel (4d), so 10 e-.• ml=2 tells you it’s one of the 5 d orbital

orientations, meaning 2 e-.

Review Question 27

• What is the frequency of radiation whose wavelength is 650 nm? C = 2.998 x 108 m/s

• 650 nm = 0.00000065 m• c = • 2.998 x 108 = 0.00000065• = 4.6 x 1014 Hz