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Metal Oxides and Acids

In this worksheet, students will look at how metal oxides react with acids and what is produced by these reactions.

'Metal Oxides and Acids' worksheet

Key stage:  KS 3

Year:  Year 9 Science worksheets

Curriculum topic:   Chemistry: The Periodic Table

Curriculum subtopic:   pH: Metal and Non-metal Oxides

Difficulty level:  

Worksheet Overview

Metal oxides contain atoms of a metal combined with atoms of oxygen. The black powder copper oxide is an example of a metal oxide. 

Pile of black powder isolated on white - stock photo 

Copper Oxide Powder



Metal oxides react with acids to produce a salt and water. This can be shown in an equation:


Acid + Metal oxideSalt + Water


The salt produced from these reactions is dependent on the acid that is used. Metal oxides form chloride salts when reacting with hydrochloric acid, nitrate salts when reacting with nitric acid and sulfate salts when reacting with sulfuric acid.


An example of each type of salt formed is shown in the equations below:


Chloride Salts

hydrochloric acid + sodium oxidesodium chloride + water

2HCl+ Na2O2NaCl + H2O

Sulfate Salts

sulfuric acid + calcium oxidecalcium sulfate + water


Nitrate Salts

nitric acid + copper oxidecopper nitrate + water

2HNO3+ CuOCu(NO3)2 + H2O


It is important to learn the formulae of the acids, as they are the three most commonly used acids in the science lab.  Use this information in this activity.

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