Sunday, January 15, 2017

Problem Solving in Chemistry

Some years ago, AUS-e-TUTE added a "how to solve problems in chemistry" page.
We call this approach to problem solving the StoPGoPS method:
  1. Stop: State the question.
  2. Pause: Prepare a plan of how you will solve the problem'
  3. Go! Follow the steps in your plan.
  4. Pause: Ponder the plausibility of your answer. (Have you answered the question you were asked? Does the answer look "about right"?
  5. Stop: State your solution (if your answer seems plausible) or Start again (if your answer doesn't look right)
Well, we have now added a Template that students can use to help guide them through the Problem Solving Process. You can download this "Template for Problem Solving" pdf at ausetute.com.au for free.

Monday, January 2, 2017

2017 Calendar

AUS-e-TUTE's 2017 Calendar, designed just for Chemistry Students, is now available as a FREE pdf.
Go to www.ausetute.com.au and click the links to download the calendar.

Wednesday, December 7, 2016

Molecular Machines



People use machines to perform tasks that fall beyond our capacities.
Since the Industrial Revolution, the complexity and number of machines we use has increased.
At the Annual Meeting of the American Physical Society in 1959, physicist and 1965 Nobel Laureate in Physics, Richard Feynman talked about the possibility of building small machines from atoms.
He returned to this idea in a lecture in 1984 he asked, "How small can you make a machine?".
But by then Chemists had already taken the first tentative steps towards building molecular machines.
The 2016 Nobel Prize in Chemistry has been awarded to Jean-Pierre Sauvage, Sir J. Fraser Stoddart and Bernard L. Feringa, whose research has led to the development of molecular machines...

Learn more in this edition of AUS-e-NEWS.

Visit http://www.ausetute.com.au/ausenews.html to subscribe to AUS-e-NEWS, AUS-e-TUTE's free quarterly newsletter.

Saturday, November 12, 2016

Fatty Acids

Do you want to answer any of the questions listed below:
  • What is a fatty acid?
  • What are the structures and formulae of common fatty acids?
  • What is a saturated fatty acid?
  • What is an unsaturated fatty acid?
  • What is a monounsaturated fatty acid?
  • What is a polyunsaturated fatty acid?
  • What determines the melting point and solubility of a fatty acid?
  • What is an essential fatty acid?
  • What is an omega-3 fatty acid?
  • What is an omega-6 fatty acid?
AUS-e-TUTE has new resources to help you answer these questions!
AUS-e-TUTE Members should log-in to use the new tutorial, game, test and exam.

If you are not an AUS-e-TUTE Member, a "free-to-view" Fatty Acids tutorial is currently available at http://www.ausetute.com.au/fattyacid.html for evaluation purposes.

Friday, October 21, 2016

Vitamins

Does it seem that dieticians and nutrition experts seem to make a huge fuss about eating foods that seem to contain infinitesimal amounts of those mysterious substances known as vitamins?
Well, there is some good, sound chemistry behind why this is so.
Find out about the chemistry of vitamins with AUS-e-TUTE's newest set of resources!

Members should log-in to access the Vitamins tutorial, game, test and exam.

If you are not an AUS-e-TUTE Member, a free-to-view tutorial is currently available for evaluation purposes at: http://ausetute.com.au/vitamincd.html

Sunday, October 2, 2016

Gravimetric Analysis

Gravimetric analysis can be used to determine the quantity of an ion present in a solution.
This can be done by adding a reagent that causes the ion under investigation to form an insoluble compound (a precipitate) that precipitates out of the solution.
AUS-e-TUTE has "free-to-view" tutorials currently available on :
  1.  Determining the percentage by mass of sulfate in a lawn fertiliser
  2.  Determining the concentration of chloride ions in water
AUS-e-TUTE Members should log-on to go to the Members ONLY resources on these topics which include:
  • tutorials
  • games
  • tests (with worked solutions)
  • exams (with worked solutions)
Not an AUS-e-TUTE Member?
Contact us to get access to the interactive demonstration resources.

Saturday, September 10, 2016

Salt from Seawater



About 200 Mt of sodium chloride are consumed every year in the world.
Some sodium chloride will be added to food, some will be used as a highway de-icing agent in cold climates, but most of it will be used in industries such as leather tanning, dye manufacturing, paper production, and in the production of other chemicals such as sodium carbonate, sodium hydroxide and chlorine.
The largest source of sodium chloride is the world's oceans.
So, how hard can it be to produce sodium chloride?
Surely you just evaporate the water off seawater and "hey presto", sodium chloride!
In reality, it's not quite that simple .....

Learn more in the September 2016 edition of AUS-e-NEWS.

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typing "subscribe" as the subject.