Unit 1
Polarity
Structures
Concepts
Formal Charge and Hybridization
100

How many grams are in 5 moles of Calcium?

~200.39 g of Calcium

100

Would the bond between O2 be polar or nonpolar?

Nonpolar

100

Draw the lewis structure in the correct VSEPR shape for: O. Include bond angles.

will check answers (linear). 180 degrees.

100

Covalent compounds are made of these type of atoms

non-metals

100

What's the bond hybridization for water?

sp3

200

Atoms with the smallest atomic radii will be found where on the periodic table?

Up and to the right

200

Draw the Lewis structure for HF and include the dipole arrow. 

Let's see!
200

Draw the lewis structure in the correct VSEPR shape for: NO2-. . Include bond angles.

will check answers (bent). 120 degrees.

200

Covalent bonds are created in order to achieve stability. How do they do it?

by sharing electrons to achieve 8 valence e-

200

What's the bond hybridization for the central atom in  BeCl?

sp

300

Ionization energy increases in the periodic table...

As you go up a group and from left to right 

300

Is it possible to have a polar trigonal planar molecule?

Yes if not all the terminal atoms are the same

300

Draw the lewis structure in the correct VSEPR shape for: PO4-3 . Include bond angles.

will check answers (tetrahedral). 109.5 degrees.

300
Explain what resonance structures are

a visual representation of the different positions a multi bond could be placed in a lewis diagram of a covalent bond

300

What's the bond hybridization for NH3

sp3

400

What does ionization energy refer to?

Energy needed rip away a valence electron from an atom

400

Why is COnonpolar but SO2 is polar?

The S has an extra lone pair which makes the shape bent. 

400

Draw the lewis structure in the correct VSEPR shape for: COH2. Include bond angles.

will check answers (trigonal planar). 120 degrees.

400

A compound will take the trigonal pyramidal shape when...

there are 4 total atoms and the middle atom has lone pairs of electrons on it

400

Draw the resonance structure for the following compound in the correct VSEPR shape: CO3-2

will check answers (trigonal planar)

500

What are the two factors in determining the strength of the attractive force between two charged particles in Coulomb's Law?

Distance and size of the charge

500

Why is water polar but carbon dioxide is not?

Water has a bent shape so the dipoles don't cancel each other out. Carbon is linear so the dipoles do cancel each other out. 

500

Draw the lewis structure in the correct VSEPR shape for: NCl3. Include bond angles.

will check answers (trigonal pyramidal). 109.5.

500

Draw a picture of an interstitial alloy involving 10 atoms. 

Let's see!

500

*Daily Double* Draw the resonance structure for the following compound in the correct VSEPR shape and include the formal charges.

linear, S =0, C = 0, N=-1