metal oxides + acid d. crowley, 2007. metal oxides + acid f to know what happens when an acid reacts...

Metal Oxides + AcidMetal Oxides + Acid

D. Crowley, 2007D. Crowley, 2007

Metal Oxides + AcidMetal Oxides + Acid

To know what happens when an acid reacts with a metal oxide

To know what happens when an acid reacts with a metal oxide

Chemical ReactionsChemical Reactions

Today you are going to undertake an experiment with acid + metal oxide

Using your sheet, list three things we may expect to see if a chemical reaction has taken place…

Temperature change Fizzing pH change Colour change Gas given off

Today you are going to undertake an experiment with acid + metal oxide

Using your sheet, list three things we may expect to see if a chemical reaction has taken place…

Temperature change Fizzing pH change Colour change Gas given off

ReactionsReactions

So far, we have seen lots of reactions Using the sheet, see if you can note the correct

answers

metal + oxygen → metal oxide

metal + water → metal (hydr)oxide + hydrogen

metal + acid → salt + hydrogen

Today we are going to look at metal oxides + acid…

So far, we have seen lots of reactions Using the sheet, see if you can note the correct

answers

metal + oxygen → metal oxide

metal + water → metal (hydr)oxide + hydrogen

metal + acid → salt + hydrogen

Today we are going to look at metal oxides + acid…

Metal OxidesMetal Oxides Metal oxides are the compounds that form when a

metal reacts with oxygen - they are all bases (alkali)

metal + oxygen metal oxide

copper + oxygen copper oxide

magnesium + oxygen magnesium oxide

sodium + oxygen ______ _____

iron + oxygen ____ _____

Metal oxides are the compounds that form when a metal reacts with oxygen - they are all bases (alkali)




sodium + oxygen ______ _____







sodium + oxygen sodium oxide














iron + oxygen iron oxide






iron + oxygen iron oxide

ExperimentExperiment

Today you are going to react a metal oxide with acid, forming a salt + water

The metal oxide we are going to use is copper oxide

Metal oxides are bases (alkali) - what do you think will happen when you add this to an acid?

Today you are going to react a metal oxide with acid, forming a salt + water

The metal oxide we are going to use is copper oxide

Metal oxides are bases (alkali) - what do you think will happen when you add this to an acid?

NeutralisationNeutralisation Add small amounts of copper oxide in a beaker

Add 25cm3 sulphuric acid, and stir

Keep adding, until some un-reacted copper oxide remains at the bottom

Filter the solution, removing the un-reacted copper oxide

Transfer the filtrate to an evaporating basin

Heat gently, until about one third of the water has evaporated

Leave the solution to cool, and examine the crystals…

Add small amounts of copper oxide in a beaker

Add 25cm3 sulphuric acid, and stir

Keep adding, until some un-reacted copper oxide remains at the bottom

Filter the solution, removing the un-reacted copper oxide

Transfer the filtrate to an evaporating basin

Heat gently, until about one third of the water has evaporated

Leave the solution to cool, and examine the crystals…

NeutralisationNeutralisation

As the metal oxide is a base, it has neutralised the acid, leaving a salt + water

Write down in your own words what the copper crystals looked like, followed by a word (and symbol) equation

As the metal oxide is a base, it has neutralised the acid, leaving a salt + water

Write down in your own words what the copper crystals looked like, followed by a word (and symbol) equation

metal oxides + acid d. crowley, 2007. metal oxides + acid f to know what happens when an acid reacts...

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