05-05-2012, 11:23 AM
Acids and Alkalis
[attachment=21338]
Learning Objectives
To know that solutions can be sorted by whether they are: acid, alkali or neutral.
To understand that an alkali reacts with an acid to cancel it out.
To know that indicators show you how acidic or alkaline a solution is.
Neutralisation
Acids and alkalis react with each other. The alkali cancels out the acid in the reaction. This is called neutralisation
Salts
The salt made depends on the acid and alkali used.
The salt contains the metal atom from the alkali, and part of the acid molecule.
The salts of sulphuric acid are known as sulphates.
The salts of hydrochloric acid are known as chlorides.
The salts of nitric acid are known as nitrates.
Alkalis
Many everyday substances are alkalis.
They feel soapy.
They are corrosive.
[attachment=21338]
Learning Objectives
To know that solutions can be sorted by whether they are: acid, alkali or neutral.
To understand that an alkali reacts with an acid to cancel it out.
To know that indicators show you how acidic or alkaline a solution is.
Neutralisation
Acids and alkalis react with each other. The alkali cancels out the acid in the reaction. This is called neutralisation
Salts
The salt made depends on the acid and alkali used.
The salt contains the metal atom from the alkali, and part of the acid molecule.
The salts of sulphuric acid are known as sulphates.
The salts of hydrochloric acid are known as chlorides.
The salts of nitric acid are known as nitrates.
Alkalis
Many everyday substances are alkalis.
They feel soapy.
They are corrosive.