Acids and Bases

Question 1

Bases

Answer 1

Indigestion tablets 
Toothpaste 
Soap
Shampoo
Bread soda 
Window cleaner

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

Tell how acidic or basic a substance is by measuring something called pH

Question 5

Alkali

Answer 5

A base that dissolves in water eg. drain cleaner (sodium hydroxide)

Question 6

Neutral

Answer 6

If something is neither an acid not a base and has a pH of 7.

Question 7

Neutralisation

Answer 7

If an acid and bases are mixed together in the right concentration, then they neutralise each other. A salt and water is produced.

Question 8

Indigestion

Answer 8

Excess stomach avid takes an antacid (anti-acid) which is a base

Question 9

Wash sting

Answer 9

It’s alkaline. This needs to be treated with an acid eg. Vinegar

Question 10

Bee sting

Answer 10

It’s acidic. Rubbing a base eg. Bread soda

Question 11

Titration

Answer 11

An experiment to neutralise an acid (hydrochloride acid) with a base (sodium hydroxide)

Question 12

The products of titration

Answer 12

Salt and water

Question 13

Indicator paper

Answer 13

An indicator changes colour to tell us if something is an acid or a base

Eg. Litmus is the dye on the indicator paper

Question 14

Acids turn blue paper

Answer 14

Red (acid)

Question 15

Bases turn red paper

Answer 15

Blue (base)

Question 16

Universal indicator paper

Answer 16

This changes colour for different pH values, it is compared to the key on the pack.

Question 17

Data logging

Answer 17

This is when you use a pH sensor connected to the 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

Question 20

Acids in lab

Answer 20

Hydrochloride acid (stomach) 
Sulphuric acid (car batteries)