Helium, a noble gas, was long believed to be 'too aloof' to react with the other elements on the periodic table. Now, however, scientists have provided a theoretical explanation of how helium may be ...
One hundred fifty years after Russian chemist Dmitri Mendeleev published his system for neatly arranging the elements, the periodic table it gave birth to hangs in every chemistry classroom in the ...
This interactive quiz is suitable for students of National 5 chemistry. Quiz: The periodic table and atoms This interactive National 5 chemistry quiz is suitable for students revising the periodic ...
Chemists use symbols and formulae to represent elements, ions and compounds. Word equations and balanced chemical equations model the changes that happen in chemical reactions. Hazards and risks - ...
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