Acids And Alkalis

Question 1

Acid

Answer 1

A substance that has a pH lower that 7

Question 2

Corrosive

Answer 2

A substance which reacts with materials and makes them dissolve

Question 3

Irritant

Answer 3

Something that reddens the skin

Question 4

Hydrogen

Answer 4

An atom which is in all acids

Question 5

Alkali

Answer 5

Has a pH higher than 7

Question 6

Soapy

Answer 6

The effect produced when an alkali is added to water

Question 7

Hydroxide

Answer 7

The particle which is always in an alkali

Question 8

Indicator

Answer 8

a dye that can change colour when placed in environments with different pH values

Question 9

Litmus

Answer 9

An indicator which tells us if something is and acid or an alkali

Question 10

Neutral

Answer 10

When a substance is neither an acid or an alkali

Question 11

Strong acid/alkali

Answer 11

Contains a lot of hydrogen (acid) or a lot of hydroxide particles (alkali)

Question 12

Weak acids/alkalis

Answer 12

contains only a few hydrogen particles (acid) or a few hydroxide particles (alkali)

Question 13

Universal indicator

Answer 13

A mixture of dyes which create A range ofcolours depending on the strength of acidity or alkalinity being tested

Question 14

pH number

Answer 14

The scale of 1-14 which shows alkalinity or acidity

Question 15

Neutralisation

Answer 15

When an acid and alkali combine resulting in products with pH of 7

Question 16

Titration

Answer 16

A lab method allowing accurate volumes of liquids to be measured

Question 17

Water

Answer 17

A molecule of water contains 2 hydrogen particles and 1 oxygen particles

Question 18

Neutral

Answer 18

When a substance is neither acidic nor alkakine

Question 19

Salt

Answer 19

A substance formed when an acid reacts with a base

Question 20

Equation

Answer 20

A way of summarising a chemical reaction with the reactants on the left off the arrow and the products on the right

Question 21

Base

Answer 21

Something which neutralises an acid