bab 6 AAAAAAAAAAAAAAA

Question 1

Which one reacts with metals + produces what

Answer 1

Acid -> hydrogen gas

Question 2

what does pH mean

Answer 2

potential of hydrogen

Question 3

In what state to acids and alkalis show their properties

Answer 3

In the presence of water

Question 4

What is an indicator

Answer 4

Colouring or a mixture of different colourings that changes colour based on the substance tested
Colour change can be used to determine if a substance if NAA

Question 5

What is the effect of Phenolphthalein after testing

Answer 5

-, -, Pink

Question 6

What is the effect of Universal indicator after testing

Answer 6

Red Green Blue

Question 7

What is the effect of Methyl orange after testing

Answer 7

Red Yellow Yellow

Question 8

What is the use of a pH scale

Answer 8

Shows the strength of acid and alkaline

Question 9

Acids and alkalis are used in sectors like

Answer 9

Agricultural, industrial, medical

Question 10

What is tartaric acid used for

Answer 10

Artificial grape flavor -???

Question 11

What is carbonic acid used for

Answer 11

Carbonated/FIzzy drinks

Question 12

What is sulphuric acid used for

Answer 12

Car battery

Question 13

What is acetic acid known as

Answer 13

Vinegar

Question 14

What is acetic acid used for

Answer 14

pickle

Question 15

What is potassium hydroxide used for

Answer 15

Soap

Question 16

What is ammonia used for

Answer 16

Fertiliser

Question 17

What is magnesium hydroxide used for

Answer 17

Antacid pills

Question 18

What is sodium hydroxide used for

Answer 18

Detergent

Question 19

How does antacid pills work

Answer 19

Neutralizes stomach acid

Question 20

What is the reaction between acid & alkali produce

Answer 20

Salt & water

Question 21

What is the process of acid + alkali

Answer 21

Neutralisation

Question 22

What happens during neutralisation

Answer 22

An acid completely loses its acidity while an alkali loses its alkali

Question 23

What is the method used for the neutralisation process

Answer 23

Titration

Question 24

What is the word equation for neutralisation

Answer 24

Acid + Alkali -> Salt + Water

Question 25

Hydrochloric acid + Sodium hydroxide

Answer 25

Sodium chloride + Water

Question 26

Sulphuric acid + Potassium hydroxide

Answer 26

Potassium sulphate + Water

Question 27

Nitric acid + Sodium hydroxide

Answer 27

Sodium nitrate + water

Question 28

How does toothpaste fight against bacteria

Answer 28

Contains alkaline substance -> neutralises acid by bacteria

Question 29

How do face cleansers and toners work?

Answer 29

Face cleansers (alkaline) -> make facial skin dry
Acidic toner -> neutralise skin

Question 30

How does hair shampoo & hair conditioner effect our hair

Answer 30

Healthy hair -> slightly acidic
Hair shampoo -> Alkaline
Hair conditioner -> Mildly acidic - neutralise residue of shampoo - make hair smooth and healthy

Question 31

How can acidic soil be treated

Answer 31

Slaked lime (alkaline) - help plants to grow well

Question 32

How do fabric softeners and detergents work

Answer 32

Detergents -> Alkaline
Fabric softeners -> acidic

Question 33

How are acidic wastes treated before discharged

Answer 33

Treated with alkali

Question 34

Ants and bee stings are acid or alkali? + how to treat

Answer 34

Acidic
Ants -> Toothpaste
Bee sting -> Calamine lotion / soda

Question 35

Are wasp stings acidic or alkali + how to treat

Answer 35

Alkaline
Vinegar

Question 36

What is the use of ammonia and formic acid in latex

Answer 36

Ammonia -> Keeps latex in liquid form (prevents bacteria that produce acid which coagulates it)
Formic acid -> Coagulate latex milk - becomes rubber

Question 37

Why does baking soda + acid makes bubbles

Answer 37

Baking soda reacts with acid to form carbon dioxide gas