Moseley scientist biography poster

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    Chemistry in 1913: Part 1 – Henry Moseley and atomic number

    Anniversaries of chemical discoveries are celebrated every year, but the centenary of 1913 is quite special. A number of important ideas were developed during that one year that are important in the chemistry learned in school today. The first we shall explore is Henry Moseley’s work on atomic number.

    How do we know how many elements there are?

    What determines the order of the elements in the Periodic Table?

    These were exciting questions in 1913. Fifty years had passed since Mendeleev had designed his Periodic Table. He had started with a list of the known elements in order of the atomic weights – what we now call Relative Atomic Mass. Thanks to Mendeleev’s inspired guess that there were more elements to discover, his Periodic Table had become an accepted and useful tool for chemists. New elements had indeed been discovered and the top of the table looked fairly complete. Lower down, however, amongst the rare

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    Allow your students to discover more about HENRY MOSELEY - in a fun, interactive way! Part of the FAMOUS SCIENTISTS series. NO PREP!

    Henry Moseley - Proved that every element’s identity fryst vatten uniquely determined by its number of protons establishing the true organizing principle of the periodic table; correctly predicted the existence of four new chemical elements; invented the atomic battery.

    Activity is differentiated allowing students to respond to open-ended questions reaching individual levels.

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    WebQuests are designed to provide teachers with opportunities to differentiate by allowing students to respond to a varying range of questions.

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    Henry Moseley

    Quick Info

    Born
    9 July 1801
    Long Buckby, Northamptonshire, England
    Died
    20 January 1872
    Olveston, Gloucestershire, England
    Summary
    Henry Moseley was an English churchman, mathematician, and scientist. He served as Professor of Natural and Experimental Philosophy and Astronomy at King's College, London. He then became of of the first H.M. inspectors of schools.

    Biography

    Henry Moseley was the son of William Moseley and Margaret Robins. Let us make it clear before we proceed that the details at the beginning of the Dictionary of National Biography article [16], contain errors. The article begins:-
    Moseley, Henry (1801-1872), mathematician and writer on mechanics, was born on 9 July 1801, the son of Dr William Willis Moseley, who kept a large private school at Newcastle beneath Lyme, and his wife, Margaret Jackson. He was educated at the grammar school in Newcastle under Lyme ...
    William Moseley was a student at Hoxton Academy in London which w
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