EXAM 4 JEOPARDY

Personal questions

100

How many siblings do I have? Double points if you can say if they're older or younger than me.

2 little sisters

200

What has been your favorite and least favorite part of SI so far?

Answers may vary

300

Name one weird fact about me. Must be actually weird not "you have 2 cats"

Literally any weird thing you've noticed or that I've told you

Answers may vary, has to actually be a weird fact.

400

Including this one, how many SI sessions have I held this semester so far? (Closest guess gets the point, every group answers.)

23! Good lord.

500

What is my research about? Bonus 200 points if you know what professor I do research with

Biochemistry/structural biology with Dr. May

Makin molecules

400

Isopropyl alcohol is a commonly used antiseptic you might have used to clean a cut before sticking a bandaid over it. Its chemical formula is C3H8O. Draw the Lewis structure of isopropyl alcohol.

Hint: Oxygen will not make more than 1 bond to C, and this molecule is completely SYMMETRIC.

   H  H  H

H2C  C  C H2

        O   

        H

Geometry without the math

100

What bond angle does a trigonal planar molecule have?

120

200

What hybridized orbitals does a molecule with a molecule with a linear shape have?

sp

300

When would the bond angle of your VSEPR molecule have a less than sign (<) in it?

WHY is this angle less than the expected bond angle?

When the central atom has a lone pair on it. WHY is it less than the expected bond angle? Because lone pairs of electrons are more repulsive than atoms!

The name's Bond. Chemical Bond.

100

How many electrons are involved in a triple bond?

Six

200

a) What does electronegativity even mean? 

b) What is the difference between a pure covalent bond and a polar covalent bond?

a) the ability of an atom to attract electrons to itself

b) polar covalent bonds happen because of a difference in electronegativity between the bonded atoms.

300

Which bond is the shortest? A carbon carbon single bond, double bond, or triple bond?

Triple bond.

400

What are the main concepts of Valence Bond Theory?

1) Valence electrons reside in orbitals (s, p, d, f..) or in hybrids of these orbitals

2) Bonds result from the overlap of these 2 orbitals w/ 1 e- each (half-filled orbitals.)

3) The shapes of molecules are based on the geometries of overlapping orbitals.)

IMF (in my feels)

100

What intermolecular force exists between all substances?

London Dispersion forces (or Dispersion forces)

500

Order the following atoms in order of increasing Boiling Point:

SO₂,SO₃,CF₄

SO₃,CF_4,SO₂