Sample round

ZuzaOoh, wrong! It's H2O. Two hydrogens, one oxygen.

Question 1 of 3

What is the chemical formula for water?

Three of the five questions in this round. Every fact was checked against a source.

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Class starter: science

Five quick science questions to open a lesson.

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Book club: after the last page

With Luna

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Class review show

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Class starter: history

With Anselmo

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Class starter: geography

With Sirocco

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Class starter: maths

With Tally

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Class starter: words

With Beatrix

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Wild world

With Bakari

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Five on the Solar System

With Sofia