A neutron walks into a restaurant and orders a seven-course dinner. When she's finished eating, she asks the waiter how much she owes.

The waiter replies, "For you, No Charge!"

Stepping into the limelight

When you are the focus of everyone's attention, you have stepped into the limelight. Ever wondered how the expression arose?

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Lighting up safely: the history of matches

History books tell us that Stone Age people would rub two pieces of flint very hard to produce a fire. Today we just strike a match, and it lights up immediately. Ever wondered how we came this far?

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Biting one's own tail: the history of benzene

Benzene is one of chemistry's great stars. It has numerous applications, and is the basis for manufacturing many more useful compounds. But did you know its structure was a subject of a lot of controversy in the 19th century?

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Video: The mole and Avogadro's number

The mole is defined as an amount of any substance that contains 6.023 X 10^23 atoms or molecules of that substance.

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A tale of vinegar and hard water

If you live in an area where the water is hard, you may notice that when you wash utensils, a thin white stain is left behind. Did you know you can use vinegar to remove these stains?

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Video: Balancing Chemical Equations

Have a tough time balancing chemical equations? This video will show you how.

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Salvarsan & Prontosil: The beginning of modern medicine

Just a hundred years ago, drugs were expensive and had to be obtained from exotic tropical trees. This changed with the discovery of an artificial compound called Salvarsan. It cured the dreaded disease syphilis and laid the foundation of modern medicine.

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Quinine - a miracle against malaria

Quinine has been used as a cure for malaria since the 17th century. It was only later in the 1940s that other drugs replaced it. Discover how the medicinal properties of this wonder drug were discovered.

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Vinegar and its winning properties

If you have seen copper or bronze statutes or curios you may have noticed that they turn black or green in colour. Did you know that you can use vinegar to clean this?

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Biomimetics - materials for the future

Over millions of years, plants and animals have evolved materials with amazing properties - the sticky feet of geckos, spiders' silk, self-cleaning lotus leaves. Scientists are now learning to make products in the lab that imitate their properties; these are called biomimetics.

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