Acids, Bases, and pH

Question 1

what is an acid

Answer 1

a substance with hydrogen, has a pH less than 7, sharp tasting sour substance, in concentrated forms they are poisonous are corrosive

Question 2

what is a base

Answer 2

a substance that contains hydroxide, has a pH greater than 7, in concentrated forms they are poisonous and corrosive, bitter taste and feel slippery and soapy

Question 3

what does alkaline mean

Answer 3

it is a descriptive word for bases, a substance that dissolves in water to give a basic solution containing hydroxide ions

Question 4

what does neutral mean

Answer 4

neither an acid or base, has a pH of 7

Question 5

what is pH

Answer 5

potiental of hydrogen, a measure of how basic or acidic something is

Question 6

what is a neutralization reaction

Answer 6

acid + base —> salt + water

Question 7

what colour does litmus paper turn in acid and base

Answer 7

red in acids, blue in bases

Question 8

what colour does bromthymol blue turn in acids? bases?

Answer 8

yellow in acids, blue in bases

Question 9

what colour does phenopthalian turn in acids? bases?

Answer 9

colourless in acids, pink in bases

Question 10

what colour does phenol red turn in acids? bases?

Answer 10

yellow in acids, red/pink in bases

Question 11

what colour does methyl orange turn in acids? bases?

Answer 11

red in acids, orange/yellow in bases