4A.6 Types Of Reaction

Question 1

what is addition reactions

Answer 1

it is when two molecules combine to form one molecule

Question 2

what is an example of addition reaction

Answer 2

ethene and bromine (C2H4 + Br2 ——> C2H4Br2

Question 3

what are substitution reactions

Answer 3

when one atom or group replaces another atom or group (displacement)

Question 4

what is an example of substitution reactions

Answer 4

C2H4Br + KOH (aq) ——> C2H4OH + KBr (aq)

C2H4Br + OH ——> C2H4OH + Br

Question 5

what is oxidation reactions

Answer 5

when a compound gains oxygen or loses a hydrogen

Question 6

why dont we not show the inorganic regent in oxidation reactions

Answer 6

because it is very complicated

Question 7

how are the oxygen atoms produced by the oxidation agent represented in oxidation reactions

Answer 7

as [O}

Question 8

what is an example of oxidation reactions

Answer 8

C2H5OH + {O} ——> CH3CHO + H2O

Question 9

what is a reduction reaction

Answer 9

it is when a substance loses oxygen and gains a hydrogen

Question 10

what is an example of a reduction reaction

Answer 10

C2H4 +H2 —–> C2H6

Question 11

what is a polymerization reaction

Answer 11

it is when alot of small molecules react together to form one large molecule

Question 12

how do we represent a molecule after polymerization

Answer 12

–[–H H -C-C- H H–]–n

Question 13

what is the type to break a covenant bond

Answer 13

1. homolytic fission

2. heterolytic fission

Question 14

what is homolytic fission

Answer 14

the breaking of a covalent bond, here each of the bonded electrons would leave with one species, forming a free radical

Question 15

what is a free radical

Answer 15

a species that contains an unpaired electron

Question 16

heterolytic fission usually occurs between which atoms

Answer 16

it occurs between identical atoms or with atoms with similar electronegativity,

Question 17

what is heterolytic fission

Answer 17

the breaking of a covalent bond where both electrons bonded pair are taken by a single atoms

Question 18

homolytic fission usually occurs between which atoms

Answer 18

atoms that have very different electronegativity

Question 19

the bonded pair gets taken by which atom in heterolytic fission

Answer 19

the one with the higher electronegativity

Question 20

in heterolytic fission, the atom that takes both electrons forms a…

Answer 20

negative ion

Question 21

in heterolytic fission, the atom that doesn’t take any electrons forms a…

Answer 21

positive ion

Question 22

what is an electrophile

Answer 22

it is a substance that is attracted to region of high electron density.

Question 23

what is an example of an electrophile

Answer 23

the positive ion produced in heterolytic fission