Tick all the boxes as done (yes we have done it all) (No really we actually have!) Now go and carefully read each one.. …tick the ones you think you’ve understood.

We have 5 lessons to revise C4 Lesson 1: The history of the periodic table, flame tests, spectroscopy and the final periodic table Lesson 2: Atomic structure Lesson 3: Group 1 – The alkali metals Lesson 4: Group 7 – The halogens Lesson 5: Ionic compounds and calculating formulae/ charges

Cartoon strip you have 20 mins! Dobereiner, Chancourtois, Newlands and Mendeleev 1829 1866 1862 1871

The angry scientist mob Featuring the angry scientist mob who don’t want to accept new scientific ideas

Discovering new elements

In 1859 Robert Bunsen and Gustav Kirchoff used a special gas burner with a colourless flame to identify the exact colours of flames produced by each element

Flame tests

Spectroscopy The light produced by an element in Bunsen’s burner was passed through a prism, which split the light into a spectrum. Each element produced a different set of coloured lines - a line spectrum.

Eve tests sodium salt the similarity is that they will both have lines the difference is that the lines will be different colours/ places / pattern [2]

any two from: lines in different places; different numbers of lines different patterns (of lines); different thicknesses of lines; different colours (of lines);

lines from sodium are in the spectrum (1) lines from potassium are in the spectrum (1) lines from both are in the spectrum (2)

any four from: mixture contains same (three) lines as potassium / contains spectrum of potassium; does not contain the line/spectrum for sodium; extra lines in mixture spectrum / lines in mixture that are not in potassium or sodium spectrum; links extra lines to another element in mixture; can identify unknown by comparison with spectra for other elements; each element has a characteristic/unique spectrum; reference to position of lines / idea of lines in the same place; accept ‘pattern’ for ‘lines’ accept other similar words for lines eg. bars/ marks etc. allow ‘mixture contains same line/lines as potassium’,