All Elements and the periodic table articles – Page 13

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On This Day - Nov 29 : Iodine was discovered

The discovery was made during the process of producing potassium nitrate for gunpowder and was made public in a meeting of the Imperial Institute of France. Its name is derived from the Greek ‘iodes’ meaning violet.
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On This Day - May 30 : Krypton was discovered

Krypton (Kr) was discovered by William Ramsay and Morris Travers. Its name is derived from the Greek “kryptos”, meaning hidden. Krypton is one of the rarest gases in the Earth’s atmosphere, accounting for only 1 part per million by volume.
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On This Day - Nov 30 : Smithson Tennant was born

He discovered iridium (Ir) and osmium (Os), the latter named for the unpleasant odour of some of its compounds (from the Greek word ‘osme’ meaning odour). He also proved that diamonds are pure carbon.
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On This Day – Jan 01: Eugène Demarcay was born

In 1901 he used spectroscopy to analyse material that had been carefully separated from samarium magnesium nitrate and discovered the element europium (Eu). His specialist knowledge of spectroscopy also helped Marie Curie confirm she had discovered radium (Ra). Related resources: Marie Curie and Aspects of the History of ...
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On This Day - Feb 06 : Discovery of germanium

Germanium (Ge) is a silvery semi-metal element used in semiconductors. It is used as a transistor in thousands of types of electronics.
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On This Day - Jan 12 : Antonio de Ulloa was born

He is credited with the discovery of platinum (Pt) after publishing in 1748 accounts of his time in South America. Platinum had actually been used by pre-columbian civilisations, making Ulloa’s work of a‘re-discovery’.
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On This Day - Jan 16 : Andres Ekeberg was born

He discovered tantalum (Ta), which is named after the character Tantalus from Greek mythology. It is a rare transition metal that is highly resistant to corrosion.
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On This Day - Jan 20 : de Chancourtois was born

He was the first person to organise elements by atomic weights, by plotting a graph of the elements around a cylinder with a circumference of 16 units corresponding to the weight of oxygen (O). Elements that appeared above and below each other shared similar periodic properties.
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On This Day - Jan 21 : Magnesium produced

Magnesium (Mg) was first extracted from seawater through an electrolytic process. Is the lightest of all structural elements – one-third less dense than aluminium – and is used in flares, pyrotechnics, incendiary bombs, aeroplane and missile construction.
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On This Day - Jan 24 : Morris Travers was born

He worked with Scottish chemist William Ramsay to discover the noble gases krypton (Kr), xenon (Xe) and neon (Ne). He also played a pivotal role in setting up the Indian Institute of Science in Bangalore.
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Earth's Crust

The aim of this ‘starter’ activity is to introduce students to the common elements found in the Earth.
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Minerals & elements in the Earth's Crust

Use questions about the composition of minerals and ores to reinforce work on elements, compounds, symbols and formulae.
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Halogens

The halogens, group 7, are an important group of elements both chemically and socially. They are unusual in that they are coloured and diatomic. They also have an order of reactivity that is the opposite of the metals in groups 1 and 2. In fact they are all very reactive, ...
Exhibition chemistry
Going for Gold!

2012-05-01T00:00:00Z

Demonstrations designed to capture the student's imagination
Elements
Vanadium

2012-05-01T00:00:00Z

When the Earth moves so does the price of vanadium
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Gemau grid: 101 o bosau cemeg y gallwch eu hargraffu

Archwiliwch y posau cemeg hyn, sy’n debyg i bosau sudoku, gyda thaflenni gwaith ac atebion y gallwch eu hargraffu, a darganfyddwch sut i’w defnyddio i ennyn diddordeb eich myfyrwyr mewn pynciau allweddol.
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Gridlocks: 101 printable chemistry puzzles

Explore these sudoku-style chemistry puzzles with printable worksheets and answers, and discover how they can be used to engage your students with key topics.
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28 o bosau cemeg i fyfyrwyr 14–16 oed

Defnyddiwch y posau hyn, sydd wedi’u hysbrydoli gan sudoku, ynghyd â’r taflenni gwaith a’r atebion y gallwch eu hargraffu, i helpu pobl ifanc 14–16 oed i gyfnerthu eu dealltwriaeth o gysyniadau cemegol allweddol.
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28 chemistry puzzles for 14-16 years

Use these sudoku-inspired puzzles with printable worksheets and answers to help 14–16 year olds consolidate their understanding of key chemical concepts.
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45 chemistry puzzles for 16-18 years

Try these chemistry puzzles based on sudoku to help 16–18 year old students consolidate their knowledge about key topics, with printable worksheets and answers.