save my exams - organic chemistry

Question 1

Homologous series

Answer 1

A homologous series is a group of organic compounds that have the same functional group, general formula, chemical properties but different number of carbons atoms

Question 2

methane and state at room temp

Answer 2

ch4 - gas

Question 3

ethane and state at room temp

Answer 3

c2h6-gas

Question 4

propane and state at room temp

Answer 4

c3h8-gas

Question 5

butane and state at room temp

Answer 5

c4h10-gas

Question 6

pentane and state at room temp

Answer 6

c5h12-liquid

Question 7

As a homologous series is ascended

Answer 7

size of the molecule increases
an effect on the physical properties, such as boiling point and density

Question 8

Hydrocarbons

Answer 8

compounds that are made up of carbon and hydrogen atoms ONLY

Question 9

general formula

Answer 9

formula that represents a homologous series of compounds using letters and numbers
Eg. the general formula of alkanes is CnH2n+2

Question 10

Systematic nomenclature

Answer 10

can be used to name organic compounds and therefore make it easier to refer to them

Question 11

alkane with one carbon atom

Answer 11

ch4 methane

Question 12

alkane with two carbon atoms

Answer 12

c2h6 ethane

Question 13

alkane with three carbon atom

Answer 13

c3h8 propane

Question 14

alkane with 4 carbon atom

Answer 14

c4h10 butane

Question 15

alkane with 5 carbon atoms

Answer 15

c5h12 pentane

Question 16

alkane with 6 carbon atoms

Answer 16

c6h14 hexane

Question 17

aliphatic compounds

Answer 17

Straight, branched and cyclic organic molecules,as long as they do not contain a benzene ring

Question 18

Straight-chain

Answer 18

organic molecules are those in which the carbon atoms are connected to each other in one continuous chain

Question 19

Branched

Answer 19

Branched organic molecules have side groups attached to the main chain of carbon atoms

Question 20

Cyclic

Answer 20

Cyclic organic molecules are those in which the carbon atoms are connected to each other in a ring shape

Question 21

Structural isomer

Answer 21

ompounds that have the same molecular formula but different structural formulae

Question 22

three different types of structural isomerism

Answer 22

Chain isomerism
Positional isomerism
Functional group isomerism