Acids and Bases

Question 1

name some natural acids

Answer 1

.citric acid (e.g lemons)
.ethanoic acid (vinegar)
.hydrochloric acid (stomach acid)
.methanolic acid (ant and nettle stings)
.tannic acid (tea and red wine

Question 2

name the three most common labatory acids

Answer 2

.hydrochloric acid
.nitric acid
.sulfuric acid

Question 3

what is a base

Answer 3

a substance that can neutralise an acid

Question 4

what is an alkali

Answer 4

a base that can dissolve in water and has a ph more than 7 (soulble)

Question 5

name some bases and alkalis found at home

Answer 5

.soap
.soda crystals
.oven cleaner
.toothpaste
.indigestion remedies

Question 6

how can we tell how acidic or alkaline a substance is

Answer 6

using an indicator that changes colour depending whenever it’s an acid or an alkaline

Question 7

name two indicators used to tell how acidic or alkaline a substance is

Answer 7

.litmus paper
.universal indicator

Question 8

what does the strength