Acids And Bases

Question 0

Bases

Answer 0

Indigestion tablets, toothpaste, soap, shampoo, bread soda, window cleaner.

Question 1

Acids in the lab

Answer 1

Hydrochloric acid-also found in the stomach

Sulphuric acid- also found in car batteries

Question 2

Bases in the lab

Answer 2

Sodium hydroxide -NaOH

Limewater- Ca(OH)2

Question 3

Acid

Answer 3

Lemons, vinegar, vitamin C, grapes, rhubarb, fizzy drinks, tea, apples.

Question 4

pH

Answer 4

We can tell how acidic or basic a substance is by measuring something called pH.

Question 5

Alkali

Answer 5

A base that dissolves in water is called an alkali

E.g.Drain cleaner (sodium hydroxide)

Question 6

Neutral

Answer 6

If something is neither an acid nor a base, and has a pH of 7, then it is neutral.

Question 7

Neutralisation

Answer 7

If an acid and base are mixed together in the right concentrations, then they neutralise each other.
Salt and water are produced.

Question 8

Indigestion

Answer 8

Excess stomach acid, take an antacid (anti-acid) which is a base

Question 9

A bee sting

Answer 9

Is acidic : rubbing a base e.g. Bread soda or soap will neutralise it

Question 10

A wasp sting

Answer 10

Is alkaline: this needs to be treated with an acid e.g. Vinegar

Question 11

Titration

Answer 11

An experiment to neutralise an acid (hydrochloric acid) with a base (sodium hydroxide) is called titration.

Question 12

The products of the titration

Answer 12

Salt and water.

Question 13

Indicator paper

Answer 13

Changes colour to tell us if something is an acid or s base

E.g. Litmus is a dye on indicator paper.

Question 14

Acids turn blue litmus paper

Answer 14

Red

Question 15

Bases turn red litmus paper

Answer 15

Blue

Question 16

Universal indicator paper

Answer 16

Thos changes different colours for different pH values, its compared to the key on the pack.

Question 17

Datalogging

Answer 17

This is where you use a pH sensor connected to a computer to measure pH.

Question 18

Test for hydrogen

Answer 18

Lit splint will pop

Question 19

Test for carbon dioxide

Answer 19

Limewater will turn milky