Relation to Syllabus

 
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The information presented on this page is designed to be used by teachers to show the links between the material in this trail and the NSW HSC Chemistry (Stage 6) Syllabus. Relevant excerpts of the Syllabus are shown on this page and a copy of the full Syllabus may be downloaded from the Board of Studies website in PDF format. Additionally, teachers are advised to take note of the Board Bulletins as they contain up-to-the-minute important information.


9.2 The Identification and Production of Materials

Contextual Outline

Humans have always exploited their natural environment for all their needs including food, clothing and shelter. As the cultural development of humans continued, they looked for a greater variety of materials to cater for their needs.

The twentieth century saw an explosion in both the use of traditional materials and in the research for development of a wider range of materials to satisfy the specialist needs of space travel and the information technologies. Added to this was a reduction in availability of the traditional resources to supply the increasing world population.

Chemists and chemical engineers continue to play a pivotal role in the search for new sources of traditional materials such as those from the petrochemical industry. As the fossil organic reserves dwindle, new sources of the organic chemicals presently used have to be found. In addition, chemists are continually searching for compounds to be used in the design and production of new materials to replace those that have been deemed no longer satisfactory for needs.


3. Other resources, such as ethanol, are readily available from plants. Such renewable resources will be of increasing importance as fossil fuel reserves are depleted

Students learn to:
describe the dehydration of ethanol to ethene and identify the need for a catalyst in this process and the catalyst used
describe the addition of water to ethene resulting in the production of ethanol and identify the need for a catalyst in this process and the catalyst used
describe the uses of ethanol as a solvent and relate this to the polar nature of the ethanol molecule
outline the use of ethanol as a fuel and explain why it can be called a renewable resource
describe conditions under which fermentation of sugars is promoted
summarise the chemistry of the fermentation process
define the molar heat of combustion of a compound and calculate the value for ethanol from first-hand data
assess the potential of ethanol as an alternative fuel and discuss the advantages and disadvantages of its use
Students:
process information from secondary sources such as molecular model kits, digital technologies or computer simulations to model
- the addition of water to ethene
- the dehydration of ethanol
plan, choose equipment and perform a first-hand investigation to gather information about the range of substances which can be dissolved by ethanol
process information from secondary sources to summarise the processes involved in the industrial production of ethanol from sugar cane
process information from secondary sources to summarise the use of ethanol as an alternative car fuel, evaluating the success of current usage
solve problems, plan and perform a first-hand investigation to carry out the fermentation of sucrose and monitor mass changes
present information from secondary sources by writing a balanced equation for the fermentation of glucose to ethanol
identify data sources, choose resources and perform a first-hand investigation to determine and compare heats of combustion of at least three liquid alkanols per gram and per mole

All Syllabus extracts Copyright © Board of Studies NSW 1999 and provided here as a courtesy to teachers by the Key Centre for Polymer Colloids without warranty or claim of ownership. Teachers, students or anyone using this information for decision-making purposes should refer to the original documents presented by the Board of Studies NSW.

Please note that the Board of Studies NSW also releases Board Bulletins containing additional important information. Users are strongly advised to take note of these Bulletins.