Reaction Types Reaction Types Mr H J Graham BSc PGCE Mr H J Graham BSc PGCE

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Types Of Chemical Types Of Chemical ReactionReaction

Reaction Types Reaction Types Mr H J Graham BSc PGCE Mr H J Graham BSc PGCE

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Synthesis ReactionsSynthesis Reactions

In a synthesis reaction, two or more In a synthesis reaction, two or more substances combine to form a new substances combine to form a new compound. This type of reaction is compound. This type of reaction is represented by the following equation.represented by the following equation.

A + B ---------A + B --------- AB ABA and B represent the reacting elements A and B represent the reacting elements

or compounds AB the productor compounds AB the product

Reaction Types Reaction Types Mr H J Graham BSc PGCE Mr H J Graham BSc PGCE

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Synthesis Reaction 1Synthesis Reaction 1

Aluminium and bromineAluminium and bromine Forms aluminium bromideForms aluminium bromide 2Al + 3Br2Al + 3Br22 >>>>>> 2AlBr >>>>>> 2AlBr33

Watch the .MOVWatch the .MOV and then describe the and then describe the reaction in your booksreaction in your books

Reaction Types Reaction Types Mr H J Graham BSc PGCE Mr H J Graham BSc PGCE

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Synthesis Reaction 2Synthesis Reaction 2

Sodium reacting with chlorineSodium reacting with chlorine Forms sodium chloride (common salt)Forms sodium chloride (common salt) 2Na + Cl2Na + Cl2 >>>>>>>>> 2 >>>>>>>>> 2NaCl2NaCl Watch the .MOV fileWatch the .MOV file

Reaction Types Reaction Types Mr H J Graham BSc PGCE Mr H J Graham BSc PGCE

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Synthesis Reaction 3Synthesis Reaction 3

Zinc reacting with oxygenZinc reacting with oxygen Forms zinc oxide (sun block)Forms zinc oxide (sun block) 2Zn + O2Zn + O2 >>>>>>>>> 2 >>>>>>>>> 2ZnO2ZnO Watch the .MOV fileWatch the .MOV file

Reaction Types Reaction Types Mr H J Graham BSc PGCE Mr H J Graham BSc PGCE

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Single Replacement Reaction Single Replacement Reaction

In a single replacement reaction (displacement reaction) one element replaces a similar element

These reactions can be represented by

AB + C >>>>>> AC + B

Reaction Types Reaction Types Mr H J Graham BSc PGCE Mr H J Graham BSc PGCE

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Single Replacement Reaction 1 Single Replacement Reaction 1

The famous Thermite reaction is highly exothermic. Aluminium is simply heated with rust

2Al + Fe2O3 >>>>>> Al2O3 + 2Fe + HEAT

Watch the .MOV…..and then describe the reaction

Reaction Types Reaction Types Mr H J Graham BSc PGCE Mr H J Graham BSc PGCE

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Single Replacement Reaction 2 Single Replacement Reaction 2

The reduction of copper oxide by carbon, produces copper

2CuO + C >>>>>>>>> Cu + CO2

Watch the .MOV…..and then describe the reaction

Reaction Types Reaction Types Mr H J Graham BSc PGCE Mr H J Graham BSc PGCE

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Single Replacement Reaction 3 Single Replacement Reaction 3

How can you make silver crystals ?

Watch the .MOV…..and then describe the reaction

Reaction Types Reaction Types Mr H J Graham BSc PGCE Mr H J Graham BSc PGCE

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Decomposition Reactions Decomposition Reactions

In a decomposition reaction, single compounds undergo reactions that produce two or more simpler substances

AB >>>>>>>>>> A + B

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Decomposition Reactions 1Decomposition Reactions 1

What happens when Nitrogen Tri-iodide NI3 is tickled with a feather?

Watch the .MOV…..and then describe the reaction

Reaction Types Reaction Types Mr H J Graham BSc PGCE Mr H J Graham BSc PGCE

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Decomposition Reactions 2Decomposition Reactions 2

What happens during the electrolysis of Water

Watch the .MOV…..and then describe the reaction

Reaction Types Reaction Types Mr H J Graham BSc PGCE Mr H J Graham BSc PGCE

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