Revision questions

What are the oxidation numbers of the named element in the following compounds  

Use standard electrode potentials to predict whether copper metal could reduce aqueous iron(III) ions to iron(II) at room temperature. 

Using standard electrode potentials, predict if reactions could occur in the following situations. Write balanced redox equations for those reactions that could occur at room temperature. 

When an aqueous solution of iron(III) ions is reacted with sulfur dioxide gas (this forms an acid solution), aqueous iron(II) ions and the sulfate ion (SO ) are produced. Write a balanced overall redox equation for the reaction. 

Tarnished silver jewellery occurs because the silver metal reacts with hydrogen sulfide in the presence of air to form silver sulfide (Ag2S). The silver object can be cleaned by dipping it into an aqueous solution of sodium chloride, contained in an aluminium metal container. 

Why are most of other categories of materials being replaced by polymeric materials  

What do you see as the challenges polymers will face in the near future  

What are the basic differences between step growth and chain growth processes  

What are the advantages and disadvantages of different polymerisation techniques  

Why might it be necessary to modify an existing commercial polymer  

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Direct Teaching In this type are included the use of computers for simulations, instructional games, revision questions and exercises. 

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