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Reactions of the Haloalkanes and Testing for Halide Ions

This is a good, straight forward lab that can be used to show the relative strengths of the C-Cl, C-Br and C-I bonds, the tests for the halide ions and the relative stability’s of the primary, secondary and tertiary carbocations. You will need some ethanol, 1-bromobutane, 1-chlorobutane and 1-iodobutane, 2-bromobutane and 2-bromo-2-methylpropane. To three separate […] Find out more

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Super dense inert gases

  SF6 or Sulfur Hexaflouride is a super heavy gas (Mr 146). It contains the S – F bond which is very stable (why?). This means that it is an inert gas with some unusual properties.   Can you explain what is happening in the video clip? [youtube]XjCmwuGKR6g[/youtube] Another dense gas is Xenon. A ballon […] Find out more

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Fuel Cells

Fuel cells a type of electrochemical cell. They work on the idea that one day they could replace the inefficient conversion of fuels to heat (approx 40%)  and then electricity with a more efficient (approx 80 – 85%) and cleaner way of producing electricity. Water is produced as a ‘waste’ product.   They are different […] Find out more

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Symbolism – a lost art?

In conversations with students during their interviews, they often talk about red being the ‘colour of anger’ and green being the ‘colour of envy’ – but it’s generally a rather superficial and bland version of symbolism. I was reminded of the complexity of meaning(s)  that used to be known to and employed by artists in […] Find out more

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The Good Old Days

Aaah, the sixties. Flower Power, Stop the Vietnam War, free love, and an artist could use almost anything as the brush – including naked women. Apparently the idea of painting using the form and movement of the body first came to Klein while practicing judo. “A 1960 work by the French conceptual artist Yves Klein […] Find out more

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The Atom – Clash of the Titans

The Atom is a three part documentary produced by the BBC, featuring Professor Jim Al-Khalili (who also stars in the more recent BBC productio ‘Chemistry: A Volatile History’). It was last aired in early 2008.   The series tells the story of the modern development of our modern day model of the atom. Part 1 […] Find out more

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An RNA world

Doubts persist to the possibility of RNA being THE hereditary / genetic material that played THE key role in the creation of life on Earth. However work carried out at the University of Colorado may have shed further light on this. The findings could be a substantial step toward understanding “the very origin of Earthly […] Find out more

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Wikis and IB Chemistry

We have all heard of Wikipedia but what is a Wiki? Simple, a wiki is a website that allows the easy creation and editing of any number web pages via a web browser. Wikis are often used to create collaborative websites and to power community websites. [1] The following Youtube clip explains how they work: [youtube]-dnL00TdmLY[/youtube] […] Find out more

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What happens when things get cold… really cold?

  The Boomerang Nebula (also called the Bow Tie Nebula) is a protoplanetary nebula located 5,000 light-years away from Earth in the Centaurus constellation. The nebula is measured at 1 K (−272.15 °C; −457.87 °F), the naturally coldest place known in the universe. The Boomerang Nebula was formed from the outflow of gas from a star at its […] Find out more

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Is Hell Exo or Endothermic?

Dr. Schambaugh, of the University of Oklahoma School of Chemical Engineering, Final Exam question for May of 1997. Dr. Schambaugh is known for asking questions such as, “why do airplanes fly?” on his final exams. His one and only final exam question in May 1997 for his Momentum, Heat and Mass Transfer II class was: […] Find out more

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Stripping off for your art?

[youtube]BFmUTQ5Oda8&feature=PlayList&p=C6E4A846793DA85D&playnext=1&playnext_from=PL&index=107[/youtube] 5,200 Australians strip for art’s sake “There were all shapes and sizes – the large and the small, the young and the old, and even a heavily pregnant woman who had re-scheduled the birth of her twins so she could take part. But the one thing the 5,200-odd people who posed for the American […] Find out more

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Appropriation and assessment

YOU CAN COPY – BUT YOU’D BETTER NOT PLAGIARIZE! Plagiarism is, of course a real and constant concern. But in art is gets a little complicated. For one thing, artists frequently copy a technique as carefully as possible in order to LEARN that technique. For another thing they can show off their knowledge of other […] Find out more

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Reverse entropy

There is something unusual going on here….. What is it? Have I lost my marbles?! 😯 [youtube]DT6FXrTgo0M[/youtube] Find out more

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