Science

Question 1

1A substance that turns blue litmus paper red is

Easy

A. neutral water B. an acid C. a salt D. a base

Question 2

2Soap solution is acidic.

Easy

A. True B. False

Question 3

3A substance that turns red litmus paper blue is

Easy

A. a base (alkali) B. a salt C. an acid D. sugar

Question 4

4The pH of a neutral solution is ___.

Easy

Your answer (fill in the blank)

Question 5

5Vinegar contains

Medium

A. acetic (ethanoic) acid B. citric acid C. nitric acid D. hydrochloric acid

Question 6

6A pH of 7 is neutral.

Easy

A. True B. False

Question 7

7Bee stings are acidic. They can be treated with

Medium

A. lemon juice B. acid C. vinegar D. baking soda (a weak base)

Question 8

8The reaction between an acid and a base is ___.

Easy

Your answer (fill in the blank)

Question 9

9Acids react with carbonates to produce

Hard

A. only hydrogen B. oxygen C. a salt, water and carbon dioxide D. only a salt

Question 10

10Neutralisation produces a salt and water.

Easy

A. True B. False