Indicators And The PH Scale

Question 1

what are indicators

Answer 1

coloured dyes that change colour when mixed with acids and alkalies

Question 2

what plants do indicators come from

Answer 2

red cabbage and beetroot

Question 3

what is litmus

Answer 3

an indicator that changes red in acids and blue in alkalies

Question 4

what is the PH scale

Answer 4

the measure of the strengths of acids and alkalies, which runs from 1 to 14

Question 5

what is numbers 1-6

Answer 5

acids

Question 6

what is numbers 7

Answer 6

neutral

Question 7

what is numbers 8-14

Answer 7

alkalies

Question 8

how can you find the ph number

Answer 8

by using a universal indicator or by using a ph meter

Question 9

example of ph 1

Answer 9

stomach acid

Question 10

example of ph 2

Answer 10

lemon juice

Question 11

example of ph 3

Answer 11

vinegar

Question 12

example of ph 4

Answer 12

fizzy drinks

Question 13

example of ph 5

Answer 13

skin

Question 14

example of ph 6

Answer 14

milk

Question 15

example of ph 7

Answer 15

pure water and blood

Question 16

example of ph 8

Answer 16

indigestion powder

Question 17

example of ph 9

Answer 17

toothpaste

Question 18

example of ph 11

Answer 18

washing powder

Question 19

example of 13,14

Answer 19

oven cleaner