pH and indicators

Question 1

What does the pH scale show?

Answer 1

used to describe how acidic or alkaline a solution is

Question 2

pH < 7 is?

Answer 2

acidic

Question 3

pH = 7 is?

Answer 3

neutral

Question 4

Ph > 7 is

Answer 4

alkaline

Question 5

What is an indicator?

Answer 5

a substance that changes colour to tell you about the pH of a solution

Question 6

methyl orange in acidic turns what colour?

Answer 6

red

Question 7

methyl orange in neutral turns what colour?

Answer 7

yellow

Question 8

methyl orange in alkaline turns what colour?

Answer 8

yellow

Question 9

phenolphthalein in acidic turns what colour?

Answer 9

colourless

Question 10

phenolphthalein in neutral turns what colour?

Answer 10

colourless

Question 11

phenolphthalein in alkaline turns what colour?

Answer 11

pink

Question 12

red litmus in acidic turns what colour?

Answer 12

red

Question 13

red litmus in neutral turns what colour?

Answer 13

stays red

Question 14

red litmus in alkaline turns what colour?

Answer 14

blue

Question 15

blue litmus in acidic turns what colour?

Answer 15

red

Question 16

blue litmus in neutral turns what colour?

Answer 16

stays blue

Question 17

blue litmus in alkaline turns what colour?

Answer 17

blue

Question 18

if universal indicator turns red what pH level is it?

Answer 18

0-2

Question 19

if universal indicator turns orange what pH level is it?

Answer 19

3-4

Question 20

if universal indicator turns yellow what pH level is it?

Answer 20

5-6

Question 21

if universal indicator turns green what pH level is it?

Answer 21

neutral-7

Question 22

if universal indicator turns light blue what pH level is it?

Answer 22

8-10

Question 23

if universal indicator turns dark blue what pH level is it?

Answer 23

11-13

Question 24

if universal indicator turns purple what pH level is it?

Answer 24

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