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Mystery #1Tier 1-2atoms / elements

What is everything made of?

Your chair, the air you are breathing, the sea, a star, and you yourself are all made of the same tiny building blocks. There are only about ninety naturally occurring kinds of them on the whole planet. Mix those ninety in different ways and you get everything you have ever touched, tasted or seen. How can so few pieces make a whole universe?

A model of a water molecule: two hydrogen atoms joined to one oxygen atom.
Photo: Ben Mills · Public domain · via Wikimedia Commons

Your guess

If you zoomed in closer and closer on anything at all, a leaf, a drop of water, your own finger, what do you think you would find it is built from?

There's no single magic word to type, have a go in your own words, then reveal the answer to see how close you got.

Make a guess to unlock the hints and the answer.