definitions

Question 1

base peak

Answer 1

Peak of greatest abundance in a mass spectrum.

Question 2

molecular ion peak

Answer 2

A peak produced by an ion formed by the removal of one
electron from a molecule.

Question 3

m+1 peak

Answer 3

A peak produced by a molecular ion with an increased mass
due to the presence of one carbon-13 atom.

Question 4

fragmentation ion

Answer 4

A positively charged ion produced when the molecular ion
breaks apart.

Question 5

L RES MR

Answer 5

A spectrum which does not show the spin-spin splitting
pattern.

Question 6

high res mr

Answer 6

A spectrum which does show the spin-spin splitting pattern.

Question 7

doublet

Answer 7

A signal which appears as a pair of lines of equal intensity

Question 8

triplet

Answer 8

A signal which appears as three lines in the approximate
intensity ratio (1:2:1)

Question 9

quartet

Answer 9

A signal which appears as four lines in the approximate
intensity ratio (1:3:3:1)

Question 10

transition metal

Answer 10

An element which forms at least one stable ion with a
partially filled d-subshell.

Question 11

complex

Answer 11

A central metal atom or ion with ligands bonded by
co-ordinate bonds.

Question 12

ligand

Answer 12

An ion or molecule with a lone pair of electrons which forms a
co-ordinate bond with a central metal atom or ion in a
complex.

Question 13

co ord number

Answer 13

The number of co-ordinate bonds to a central metal atom or
ion in a complex.

Question 14

monodentate

Answer 14

A ligand which uses only one lone pair of electrons to form a
co-ordinate bond with a central metal atom or ion in a
complex.

Question 15

standard electrode potential

Answer 15

The potential difference measured when a half-cell is connected
to the standard hydrogen electrode under standard conditions.

Question 16

emf

Answer 16

The potential difference measured when two half-cells are
connected.

Question 17

primary amine

Answer 17

Only one carbon atom directly bonded to the nitrogen atom
and therefore has the (-NH2) group.

Question 18

coupling

Answer 18

A reaction in which two benzene rings are linked together
through an azo (-N=N-) group.

Question 19

condensation polymers

Answer 19

Polymers formed by the elimination of small molecules such as
water or hydrogen chloride when monomers bond together.

Question 20

Biodegradable polymers

Answer 20

A polymer which can be broken down by action of micro organisms

Question 21

Monomers

Answer 21

Small molecules which join together to form a polymer