Acids and alkalis

Question 1

What is universal indicatpor used for

Answer 1

to find out whether a solution is acid, alkali or neutral depending on the colour it changes

Question 2

Two examples of acids found at home

Answer 2

lemon juice and vinegar

Question 3

Two examples of alkalis found at home

Answer 3

baking soda and bleach

Question 4

name two acids found in the lab

Answer 4

hydrochloric acid and sulfuric acid

Question 5

name two alkalis found in the lab

Answer 5

sodium hydroxide and calcium hydroxide

Question 6

What else can be used as an indicator

Answer 6

red cabbage

Question 7

what colour does universal indicator or PH paper turn in an alkali

Answer 7

blue

Question 8

what colour does universal indicator or PH paper turn in an acid

Answer 8

red

Question 9

what colour does universal indicator or PH paper turn in an neutral

Answer 9

green

Question 10

what type of solutions have a PH scale of less then 7

Answer 10

acidic solutions

Question 11

what type of solutions have a PH scale of more then 7

Answer 11

alkaline solutions

Question 12

what type of solutions have a PH scale equal to 7

Answer 12

neutral solutions

Question 13

what do very acidic solution have a PH scale less than

Answer 13

2

Question 14

what do very alkaline solution have a PH scale more than

Answer 14

12

Question 15

what does burning fossil fuels produce

Answer 15

carbon dioxide

Question 16

what does burning sulfur produce

Answer 16

sulfur dioxide and if dissolved in water makes acid rain

Question 17

what happens when an acid and an alkali react in the correct proportions

Answer 17

they neutralise and for a solution with a PH scale of 7

Question 18

What happens when hydrochloric acid is neutralised with sodium hydroxide

Answer 18

sodium hydrochloride aka table salt

Question 19

what word equation can represent neutralisation

Answer 19

acid + alkali - salt +water