The Periodic Table and its Development 0.0 / 5 ? ChemistryThe Periodic TableGCSEAQA Created by: Chloe MatthewsCreated on: 27-03-14 20:25 An English scientist called John Newlands put forward his Law of '________' in 1864. octaves 1 of 15 In 1869, a Russian scientist '_________' published his own periodic table. mendeleev 2 of 15 The elements were put in order of the relative atomic '____' mass 3 of 15 When protons, neutrons and electrons were discovered, elements were then ordered in atomic '______'. number 4 of 15 The elements in a vertical column are in the same '______'. group 5 of 15 All elements in a group have similar chemical '________'. properties 6 of 15 Elements in a horizontal row are in the same '_____'. period 7 of 15 The elements in group 1 are called the '______' metals. alkali 8 of 15 The melting points and boiling points of group one '_______' as you go down the group. decrease 9 of 15 As you go down group one, the metal's '_______' increases. reactivity 10 of 15 Group 1 metals react with non-metals to form '______' compounds. ionic 11 of 15 The elements in the centre of the periodic table - between groups 2 and 3 - are called the '_________' metals. transition 12 of 15 Many transition metals act as '_______'. catalysts 13 of 15 The elements in Group 7 are called the '_______'. halogens 14 of 15 The molecules of group 7 elements are '_______'. diatomic 15 of 15
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