Evolution of the Periodic Table. Our lesson tells the history of evolution of the periodic table from Dobereiner's triads, through Newlands' law of octaves until Mendeleev developed the periodic table we would recognise today.
Introduction to transition metals, including a definition of transition metals. Colourful compounds and colourful ions. Variable oxidation states of transition metals. Catalysts and catalytic behaviour of transition metals and transition metal ions.
Is Your Calculator Legal? Which calculators are OK for school exams? Find out about the rules and regulations that apply for all school exams in the UK. GCSE Science, GCSE Chemistry, A Level Chemistry, AS Chemistry and A2 Chemistry