Question 1

what is a functional group?

Accepted Answer

a functional group gives a 'family' of organic compounds their characteristic reactions

Answer

a functional group gives a series of compounds their characteristic physical properties

Question 2

What is a homologous series?

Accepted Answer

A family of organic compounds with the same functional group

Answer

A family of inorganic compounds with different functional group

Question 3

What is the general formula for alkenes?

Accepted Answer

CnH2n+2

Answer

CnH2n

Question 4

What is the general formula for alkanes?

Accepted Answer

CnH2n

Answer

CnH2n+2

Question 5

what is combustion?

Accepted Answer

fuel burning in oxygen to form carbon dioxide and water

Answer

fuel burning in carbon dioxide to form oxygen and water

Question 6

what is an addition reaction?

Accepted Answer

a reaction in which a double bond breaks to form a single bond and two new bonds are made with the Cs that had the double bond

Answer

a reaction in which a single bond breaks to form a double bond and two new bonds are made with the Cs that had the single bond

Question 7

what is the test for alkenes?

Accepted Answer

orange bromine water turns colourless

Answer

colourless bromine water turns orange

Question 8

alkene + hydrogen

Accepted Answer

alkane

Answer

alcohol

Question 9

alkene + halogen

Accepted Answer

alkane minus two Hs and two of the halogen atoms

Answer

alkane plus two halogen atoms

Question 10

alkene + steam

Accepted Answer

alcohol

Answer

alkene

Question 11

what is the functional group of the alkene family?

Accepted Answer

C=C

Answer

OH

Question 12

what is the functional group of the alcohol family?

Accepted Answer

OH

Answer

C=C

Question 13

what is the functional group of carboxylic acid?

Accepted Answer

H-O-C=O

Answer

Cl-O-C=O

Question 14

What is the functional group of esters?

Accepted Answer

-O-C=O-

Answer

-O=C=O

Question 15

alcohol + carboxylic acid

Accepted Answer

esters

Answer

alkane

Question 16

alcohol + sodium

Accepted Answer

sodium alkoxide + hydrogen

Answer

carbon dioxide + water

Question 17

alcohol + oxygen

Accepted Answer

carbon dioxide + water

Answer

sodium alkoxide + hydrogen

Question 18

alcohol + oxidising agent [O]

Accepted Answer

carboxylic acid + water

Answer

ester + water

Question 19

acid + metal hydroxide

Accepted Answer

salt + water

Answer

salt + water + carbon dioxide

Question 20

acid + metal carbonate

Accepted Answer

salt + water + carbon dioxide

Answer

salt + water

Question 21

acid + metal oxide

Accepted Answer

salt + water

Answer

salt + water + carbon dioxide

Question 22

why are carboxylic acids weak?

Accepted Answer

they only partially ionise

Answer

they fully ionise

Question 23

carboxylic acid + alcohol (+ acid catalyst)

Accepted Answer

ester + water

Answer

alkane + water

Question 24

esters' properties

Accepted Answer

volatile, fragrant compounds used in flavourings and perfumes

Answer

volatile, acidic

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