Thursday, January 13, 2011

Day Four: Activity One

What is the chemicals and their structures that make up cardboard?
It is made up of a heavy wood-based paper and paper is produced by the compression of fibres.  The fibres are usually natural and based on cellulose.

What is the chemicals and their structures that make up styrofoam?
Polystyrene consists of a long chain of hydrocarbons which are connected by phenyl groups (phenyl is the name given to benzene when it is bonded to other things made of carbon). As an aromatic hydrocarbon, it burns with an orange-red flame and gives off soot. When completely oxidized, polystyrene only yields carbon dioxide and water.

What is the chemicals and their structures that make up waxes?
Paraffin wax refers to a mixture of alkanes that falls within the 20 ≤ n ≤ 40 range; they are found in the solid state at room temperature and begin to enter the liquid phase past approximately 37°C.  Waxes are insoluable in water but soluble in petroleum based solvent.



Explain why water is attracted to cardboard and not styrofoam.
Cardboard has OH type bonds so it attracts to the H2O bonds.  Then styrofoam is made up of polystyrene and that wicks water away.  There is no charge in certain molecules with styrofoam so there is no attraction to the water.

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