everyday consumer products 2.2

Question 1

calculate energy change

Answer 1

Eh=cm(delta)T

Question 2

what number is c in energy change

Answer 2

4.18

Question 3

what do alcohols contain

Answer 3

carbon, hydrogen and oxygen

Question 4

general formula for alcohols

Answer 4

CnH2n+1OH

Question 5

functional group of alcohols

Answer 5

hydroxyl

Question 6

alcohol functional group structure

Answer 6

-OH

Question 7

uses of alcohols

Answer 7

fuels and cleaning

Question 8

trends in alcohols

Answer 8

• as carbon chain length increases solubility decreases

- melting and boiling points increase as the molecule have stronger intermolecular forces

Question 9

carboxylic acid general formula

Answer 9

CnH2n+1COOH

Question 10

functional group for carboxylic acids

Answer 10

carboxyl

Question 11

carboxylic acid functional group structure

Answer 11

C=O
|
O-H

Question 12

uses of carboxylic acids

Answer 12

preservatives, soaps and medicine

Question 13

trends in carboxylic acids

Answer 13

• as carbon chain length increases solubility decreases

- melting and boiling points increase as the molecule have stronger intermolecular forces

Question 14

carboxylic acids are insoluble after…

Answer 14

propanoic acid

Question 15

dilute ethanioc acid is…

Answer 15

vinegar

Question 16

how to recognise carboxylic acids

Answer 16

unpleasant smell or taste

Question 17

name 4 alcohols

Answer 17

methanol, ethanol, propanol, butanol, pentanol, hexanol, heptanol and octanol

Question 18

chemical formula for butanol

Answer 18

C4H9OH

Question 19

shortened formula for pentanol

Answer 19

CH3CH2CH2CH2CH2OH

Question 20

name 3 carboxylic acids

Answer 20

methanoic acid, ethanoic acid, propanoic acid, butanoic acid, pentanoic acid, hexanoic acid, heptanoic acid and octanoic acid

Question 21

chemical formula for pentanoic acid

Answer 21

C5H11COOH

Question 22

shortened structure formula for propanoic acid

Answer 22

CH3CH2COOH