What Words Mean

Question 1

Heteroatom

Answer 1

Anything other than H and O

Question 2

Volatile?

Answer 2

How readily a substance vaporizes

Question 3

Saturated vs. Unsaturated molecule?

Question 4

High substituted molecule?

Question 5

Inductrion

Answer 5

A change in electron density due to electron-withdrawing or donating groups on the molecule.

Question 6

what fragments are shown on mass spec?

Answer 6

Only fragments with a charge

Question 7

More resonance makes the molecule more or less stable?

Answer 7

More

Question 8

More stable equals lower or higher energy?

Answer 8

Lower

Question 9

Increased pi bonds (density) indicates…

Answer 9

Increased frequance

Question 10

NH2 shifts oxygen connected higher or lower on IR??

Answer 10

Lower!

Question 11

Homotopic

Answer 11

Can be exchanged by both rotation and mirror plane. Always chemically equivalent. Usually a carbon with two H and both other substituents are exact

Question 12

Enantiotopic

Answer 12

Can only exchange through mirror images but are not identical. Always chemically equivalent in achiral environment. When an H is replaced with a Z it makes a chiral centre

Question 13

Diastereotopic

Answer 13

Cannot exchange through any symmetry element. When an H is changed to Z it makes a chiral centre and there is already and chiral centre present in the molecule