Concept · 4 steps · NESA SC4-PRT-01

The Periodic Table

Line every element up by atomic number and, like magic, the lookalikes fall into the same columns. From why there's a table at all, all the way to predicting an element nobody has met. Four short steps, each with its own toy to play with.

1 Where it comes fromLine the elements up by atomic number and a pattern repeats. Click a tile, flip the metals switch, watch the table sort itself. 2 How to do itRead a column for personality, a row for shells, a number to find anything — and take the find-the-element challenge. 3 Where it gets trickyLatin symbols like Na and Pb, group-vs-period mix-ups, ordered by number not mass, and hydrogen the oddball. 4 Out in the wildMendeleev predicting elements from the gaps — and reasoning backwards from properties to a group.

← This concept rests on

Inside the Atom
Classifying Matter: Elements, Compounds & Mixtures

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Completes the Chemistry Strand for the Year