Entropy

This video sums it up very nicely:

It is worthwhile knowing the sorts of questions we may be asked about entropy as well:

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Hess's Law

We have been looking at Hess's Law over the past week. Here is a video of the key steps being explained:

Spectra Revision

Overview of IR Spectra:

Answering a typical Assessment Task:

Polyamides

The amide bond can sometimes be found in polymers, such as nylon.

Did you know that nylon gets its name from the two cities where it was jointly invented?

Acyl Chlorides

These are wonderful compounds to make as precursors for other organic compounds. We had two challenges today:

1. Explore the preparation and reactions of acyl chlorides. Why are acyl chlorides such useful organic compounds?
   
2. Esters can be made from acyl chlorides. They can also be made from carboxylic acids. We have to compare and contrast these two methods. Which one is better?
   

Carboxylic Acids

Carboxylic Acids are very useful precursor chemicals, as well as being useful chemicals themselves (e.g. ethanoic acid is a good preservative - vinegar).

Haloalkanes

We do not need to know much more about haloalkanes than what we learned last year. We do need to know how to convert haloalkanes into alkenes, however: