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Journal of Chemical Education

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Mason, Joan

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The Polyhalide Experiment and the Open University Summer School

Peer reviewed

Mason, Joan – Journal of Chemical Education, 1975

Describes an experiment designed for second-level summer school chemistry students enrolled in Great Britain's Open University. (GS)

Descriptors: Chemical Analysis, Chemical Reactions, Chemistry, College Science

Periodic Contractions among the Elements. Or, on Being the Right Size.

Peer reviewed

Mason, Joan – Journal of Chemical Education, 1988

Discusses the significance of periodicity and covalent atomic radius among the elements. Describes contraction across the row, expansion down the group, irregularities in the buildup of the periodic table and periodicities of physiochemical properties. (CW)

Descriptors: Atomic Structure, Chemical Bonding, Chemical Reactions, Chemistry