acids

Question 1

what ions do acids release

Answer 1

h+ hydrogen ions

Question 2

what ions do alkalis release

Answer 2

hydroxide oh-

Question 3

ph of an acidic solution

Answer 3

0-6

Question 4

ph of an alkali solution

Answer 4

8-14

Question 5

An acid with a pH of 3 is diluted by a factor of 10. What is the new pH?

Answer 5

4

Question 6

strong alkali colour

Answer 6

dark purple

Question 7

what colour does litmus turn an alkali

Answer 7

blue

Question 8

What colour change happens in
phenolphthalein as it goes from acidic to alkaline?

Answer 8

colourless to pink

Question 9

What colour is methyl orange in acid?

Answer 9

red

Question 10

how is a concerntrated acid different to a diluted acid

Answer 10

more acid is dissolved per dm3

Question 11

describe a strong acid

Answer 11

An acid that completely dissociates in solution

Question 12

give an example of a strong acid

Answer 12

hydrochloric acid

Question 13

formula for sulphuric acid

Answer 13

H2SO4

Question 14

describe a weak acid

Answer 14

particularly dissociated in a solution

Question 15

what’s an alkali

Answer 15

a base that’s soluble in water

Question 16

acid reacts with metal

Answer 16

salt + hydrogen

Question 17

acid+ metal oxide or hydroxide

Answer 17

salt + water

Question 18

acid + metal carbonate

Answer 18

salt + water + carbon dioxide

Question 19

always soluble salt

Answer 19

nitrates

Question 20

what’s a precipitate

Answer 20

formed from an insoluble salt