6. Greenhouse Gases

Question 1

What is the VSEPR theory?

Answer 1

Valence Shell Electron Pair Repulsion Theory.

It is based on the idea that the shape of a molecule or polyatomic ion is determined by repulsion among pairs of electrons associated with a central atom.

Only valence electrons of the central atom can influence the molecular shape in a meaningful way.

Question 2

What is the Pauling scale?

Answer 2

The Pauling Scale is used to determine the electronegativty of each element.

Question 3

What is the formula for finding alkalinity?

Answer 3

Question 4

Define alkalinity

Answer 4

The toal concentration of basic sites and is the measure of the ability of seawater to neautralise acidity.

Question 5

Name these shapes~~

Answer 5

1. Linear
2. Trigonal Planar

(Remember triangle-trigonal)

Question 6

What are these shapes called?

Answer 6

4. Tetrahedral

(Tetra- 4regions)

5. Trigonal Bipyramidal

(Tri- 3 , Bi- 2 3+2=5)

Question 7

What is this?

Answer 7

6. Octahedral

(Not 8, but 6)

Question 8

What shape are these?

Answer 8

Bent (A)

Bent (B)

(Remember, linear that is bent in middle)

Question 9

Identify these shapes

Answer 9

Trigonal pyramidal

See-saw

Question 10

What shapes are these?

Answer 10

T-shaped

Linear (B)

Question 11

Name these shapes

Answer 11

Square pyramidal

Square planar