Neutralisation Reactions

Question 1

When acids are added to water they

Answer 1

Form positively charged hydrogen ions H+

Question 2

The presence of H+ ions is what makes a solution

Answer 2

Acidic

Question 3

When alkalis are added to water, they form

Answer 3

negative hydroxide ions (OH–)

Question 4

The pH scale is

Answer 4

a numerical scale which is used to show how acidic or alkaline a solution is, in other words it is a measure of the amount of ions present in the solution

Question 5

A neutralisation reaction occurs when an

Answer 5

acid reacts with an alkali

Question 6

When these substances react together in a neutralisation reaction

Answer 6

, the H+ ions react with the OH– ions to produce water

Question 7

Not all reactions of acids are neutralisations. For example,

Answer 7

when a metal reacts with an acid, although a salt is produced there is no water formed so it does not fit the definition of neutralisation.

Question 8

The ionic equation is

Answer 8

H+ + OH- -> H2O

Question 9

that acids are substances that contain

Answer 9

hydrogen ions in solution

Question 10

The more hydrogen ions the

Answer 10

stronger the acid, but the lower the pH

Question 11

Universal indicator is

Answer 11

a mixture of different indicators which is used to measure the pH

Question 12

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