Definitions

Question 1

What is a ph of a substance

Answer 1

A value that indicates the level of acidity/alkalinity in the substance

Question 2

Describe a Ph scale

Answer 2

a numeric scale with a range of 0-14 with 0-6 being acidic, 7 being neutral and 8-14 being alkaline

Question 3

What is an indicator

Answer 3

A chemical that produces a colour change depending on the Ph of a substance it exists in an acidic medium or an alkaline medium, the colour of the two forms are different

Question 4

list two forms indicators are available in

Answer 4

paper, soultion

Question 5

Blue litmus paper in an acidic solution

Answer 5

red

Question 6

red litmus paper in a basic solution

Answer 6

blue

Question 7

Universal pH paper in basic solution

Answer 7

changes colour of ph paper depending on its pH

Question 8

methyl orange indicator

Answer 8

acid- red alkali- yellow

Question 9

phenolphthalein

Answer 9

acid- colourles alkali- pink

Question 10

Universal indicator

Answer 10

available in paper/solution. A mixture of indicators and is able to produce colour change at each pH level

Question 11

Ph meter

Answer 11

comtains a combination of electrode that is sensitive to H+ concentration, it is inserted and will give you a Ph value to 2 decimal places