RNZ: Elemental

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A journey through the periodic table of elements with chemistry professor Allan Blackman, from AUT, and Alison Ballance

RNZ


    • Dec 22, 2019 LATEST EPISODE
    • infrequent NEW EPISODES
    • 9m AVG DURATION
    • 98 EPISODES


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    Latest episodes from RNZ: Elemental

    Zirconium - shape-shifting time capsule

    Play Episode Listen Later Dec 22, 2019 12:33


    Zirconium is a shape-shifting tough cookie, that is a tale of gemstones, medical implants and nuclear reactors, says Allan Blackman from AUT in ep 96 of Elemental.

    Zinc - more useful than you realise

    Play Episode Listen Later Dec 19, 2019 12:30


    Zinc is a very useful metal that turns up in everything from sunscreen to paint, & galvanised metals to cereals, as well as brass instruments, says Prof Allan Blackman in ep 95 of Elemental.

    Yttrium - here's that village Ytterby again

    Play Episode Listen Later Dec 15, 2019 8:27


    Yttrium is yet another element named after the village of Ytterby and is important in the development of high temperature superconductors, says Allan Blackman from AUT in ep 94 of Elemental.

    Ytterbium - yet another element named after Ytterby

    Play Episode Listen Later Dec 12, 2019 8:11


    Ytterbium is yet another lanthanoid named after the Swedish village of Ytterby, says Prof Allan Blackman in ep 93 of Elemental.

    Xenon - a stranger in search of strange particles

    Play Episode Listen Later Dec 10, 2019 9:54


    Xenon is a noble gas that turns up in various lights, gets used in xenon ion propulsion systems for spacecraft & plays a key role in the search for dark matter, says Prof Allan Blackman from AUT in ep 92 of Elemental.

    Vanadium - Model T Fords, big batteries & sea squirts

    Play Episode Listen Later Dec 8, 2019 9:32


    Vanadium makes steel stronger & lighter, is being used in what will be the world's largest battery, and sea squirts are full of it, says Prof Allan Blackman from AUT in ep 91 of Elemental.

    Uranium - first radioactive element to be discovered

    Play Episode Listen Later Dec 5, 2019 8:27


    Named after the planet Uranus & associated with Hiroshima & nuclear bombs, uranium is the highest-numbered element found naturally in significant quantities on earth, says Prof Allan Blackman in ep 90 of Elemental.

    Tungsten - highest melting point of any metal

    Play Episode Listen Later Dec 1, 2019 8:45


    Tungsten's very high melting point made it an ideal filament for incandescent light bulbs, & as it is in some enzymes it is the heaviest element used in nature, says Allan Blackman from AUT in ep 89 of Elemental.

    Titanium - light, strong & quite pretty

    Play Episode Listen Later Nov 28, 2019 8:33


    Titanium is light, strong, corrosion resistant & is used to repair broken limbs as it is able to get integrated into the bone, says Allan Blackman from AUT speaking from personal experience in ep 88 of Elemental.

    Tin - from whistles to organ pipes & anti-fouling paint

    Play Episode Listen Later Nov 26, 2019 10:53


    The element tin turns up in all sorts of alloys, but tin cans are - mostly - not made from tin, says Prof Allan Blackman from AUT, in ep 87 of Elemental.

    Thulium - the most laborious of the lanthanoids

    Play Episode Listen Later Nov 24, 2019 9:45


    Isolating the element thulium was a truly laborious process that took many years, says Prof Allan Blackman from AUT in ep 86 of Elemental.

    Thorium - potential source of cleaner nuclear energy

    Play Episode Listen Later Nov 21, 2019 9:08


    Named after Thor, the Norse God of Thunder, thorium could provide a cleaner source of nuclear power in the future, says Prof Allan Blackman from AUT in episode 85 of Elemental.

    Thallium - the poisoner's poison

    Play Episode Listen Later Nov 17, 2019 8:26


    Thallium is most famous for some infamous poisoned family cases & its appearance in an Agatha Christie novel solved a medical mystery, says Allan Blackman from AUT in ep 84 of Elemental.

    Terbium - turns up in old TVs & new Euro notes

    Play Episode Listen Later Nov 14, 2019 8:53


    A discovery from the chemically prolific Swedish village of Ytterby, terbium produced the green on old TV sets & adds security to Euro notes, says Prof Allan Blackman from AUT in ep 83 of Elemental.

    Tellurium - usually associated with gold

    Play Episode Listen Later Nov 10, 2019 9:20


    Tellurium is a metalloid often found with gold and the US town Telluride is named after it, says Prof Allan Blackman, in ep 82 of Elemental.

    Technetium - the first synthetic element

    Play Episode Listen Later Nov 7, 2019 8:44


    Technetium was the first element on the periodic table to be synthesised. It is rare, radioactive and has only a few uses, says Prof Allan Blackman in ep 81 of Elemental.

    Tantalum - a tantalising chemical element

    Play Episode Listen Later Nov 3, 2019 7:22


    The metal tantalum is usually found with the element niobium, has a very high melting point but is a 'conflict mineral', says Prof Allan Blackman in ep 80 of Elemental.

    Sulfur - king of bad smells

    Play Episode Listen Later Oct 31, 2019 14:24


    Sulfur is responsible for some very bad smells, is the number one industrial chemical and is also an essential element, says Prof Allan Blackman in ep 79 of Elemental.

    Strontium - from sensitive teeth toothpaste to nuclear fission

    Play Episode Listen Later Oct 27, 2019 9:11


    Named after a Scottish town, strontium can be highly radioactive & glow-in-the-dark, but also used in toothpaste, says Prof Allan Blackman from AUT, in ep 78 of Elemental.

    Sodium - a salt of the earth spectator

    Play Episode Listen Later Oct 24, 2019 11:18


    Sodium is vital for life & usually found in combinaton with other more interesting elements, says Prof Allan Blackman in ep 77 of Elemental.

    Silver - a popular noble metal

    Play Episode Listen Later Oct 22, 2019 11:14


    Silver is widely used in jewellery, has interesting light sensitive abilities and has antimicrobial properties, says Prof Allan Blackman from AUT in ep 76 of Elemental.

    Silicon - a ubiquitous part of modern life

    Play Episode Listen Later Oct 20, 2019 10:19


    Silicon is a blockbuster metalloid with many uses, from glass to computer chips & bathroom sealants, says Prof Allan Blackman from AUT in ep 75 of Elemental.

    Selenium - good reason to eat seafood & Brazil nuts

    Play Episode Listen Later Oct 17, 2019 8:16


    New Zealand soils lack the vital element selenium, which also used to be important in photocopiers and bathroom plumbing, says Prof Allan Blackman from AUT in ep 74 of Elemental.

    Scandium - the scandal of the scandium cricket bat

    Play Episode Listen Later Oct 15, 2019 8:22


    Predicted by Mendeleev & useful for alloying with aluminium, scandium was involved in a famous cricket scandal, says AUT's Allan Blackman in ep 73 of Elemental.

    Samarium - magnets for making & listening to music

    Play Episode Listen Later Oct 13, 2019 6:46


    Samarium magnets are used in headphones & guitar pickups, and samarium was the first element named after a real person, says Prof Allan Blackman from AUT in ep 72 of Elemental.

    Ruthenium - a 'sort of' precious metal

    Play Episode Listen Later Oct 10, 2019 8:11


    Ruthenium is a 'sort of' precious metal that is a useful catalyst and alloy. It is toxic and smells like ozone, says Allan Blackman from AUT in ep 71 of Elemental.

    Rubidium - expensive and not very useful

    Play Episode Listen Later Oct 6, 2019 9:10


    Rubidium is a reactive metal with few uses, named 'deepest red' due to its beautiful red spectral lines, says Allan Blackman from AUT in ep 70 of Elemental.

    Rhodium - used in cars, drugs ... and aftershave

    Play Episode Listen Later Oct 3, 2019 7:47


    Rhodium is an expensive precious metal that is used in catalytic convertors, to make the Parkinson's drug L-DOPA, create shiny jewellery and add the menthol taste to toothpaste, says Allan Blackman from AUT in ep 69 of Elemental.

    Rhenium - has a number of claims to chemical fame

    Play Episode Listen Later Oct 1, 2019 7:13


    Named after the Rhine river, rhenium is a metal with very high boiling and melting points, and it was the last naturally occuring, non-radioactive element to be discovered, says Prof Allan Blackman in ep 68 of Elemental.

    Radon - radioactive basement risk

    Play Episode Listen Later Sep 29, 2019 9:33


    The radioactive gas radon can be a risk in the basements of stone houses and used to, erroneously, be touted for its health benefits, says Prof Allan Blackman from AUT in ep 67 of Elemental.

    Radium - famous but not very useful

    Play Episode Listen Later Sep 26, 2019 10:05


    Radium was famously found by the Curies, and was once widely used in face creams, drinks and luminous watch dials, despite being highly radioactive, says Allan Blackman in ep 66 of Elemental.

    Protactinium - a very dull chemical element

    Play Episode Listen Later Sep 22, 2019 6:58


    Protactinium is a rare, radioactive element that has no uses and may be the most boring element, says Prof Allan Blackman from AUT in ep 65 of Elemental.

    Promethium - rare and unremarkable

    Play Episode Listen Later Sep 19, 2019 11:45


    Despite its gruesome mythical name, the radioactive element promethium has no particular claim to fame, says Prof Allan Blackman from AUT in ep 64 of Elemental.

    Praseodymium - a long name but not many uses

    Play Episode Listen Later Sep 15, 2019 6:20


    Praseodymium is a metal wirh the second longest name on the periodic table and not many uses, says Prof Alan Blackman from AUT in ep 63 of Elemental.

    Potassium - a matter of life and death

    Play Episode Listen Later Sep 12, 2019 11:18


    From levitating burnt buttocks, to excitable nerves and sure-to-rise baking, potassium is highly reactive and vital to life, says Prof Allan Blackman in ep 62 of Elemental.

    Polonium - few redeeming features

    Play Episode Listen Later Sep 8, 2019 10:16


    Polonium will be forever linked with the names Curie and Litvinenko and has negligible desirable features, says Prof Allan Blackman in ep 61 of Elemental.

    Plutonium - nuclear bombs & nuclear power

    Play Episode Listen Later Sep 5, 2019 9:01


    A radioactive heavyweight associated with nuclear bombs & power, which is powering the Voyager spacecraft, says Prof Allan Blackman from AUT in ep 60 of Elemental.

    Platinum - another pricey precious metal

    Play Episode Listen Later Sep 1, 2019 8:57


    Platinum is useful in catalytic convertors, is used to treat testicular cancer and will be useful in hydrogen fuel cells, says Prof Allan Blackman from AUT in ep 59 of Elemental.

    Phosphorus - P was discovered in pee

    Play Episode Listen Later Aug 29, 2019 14:27


    Phosphorus, chemical symbol P, was first isolated as an element from thousands of litres of urine. Also found in guano, aka bird poo. Allan Blackman from AUT has the full story in ep 58 of Elemental.

    Palladium - cleaning up your car's exhaust

    Play Episode Listen Later Aug 25, 2019 12:29


    Palladium is a pricey precious metal most commonly used in catalytic convertors on car exhausts, says AUT's Allan Blackman in ep 57 of Elemental.

    Oxygen - the friendly element

    Play Episode Listen Later Aug 22, 2019 14:46


    Oxygen is very friendly with other chemical elements & very helpful for life on Earth, says Allan Blackman from AUT in ep 56 of Elemental.

    Osmium - heavyweight champion of the elements

    Play Episode Listen Later Aug 18, 2019 8:58


    Osmium is extremely rare and expensive. It is the densest chemical element, rivals diamond as being the least compressible of all known substances & has a distinctive 'pong' according to Allan Blackman in ep 55 of Elemental.

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