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Science

Small, focused science practice — starting with the symbols every chemistry class expects you to know.

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Element Symbols Quiz NEW

Chemistry is full of facts that simply have to be memorised before the interesting part can start, and the element symbols are the first of them. A quick round with instant feedback is the fastest way to turn them from something you look up into something you just know.

Everything runs in your browser with no account, so it works equally well for revision at home and as a warm-up projected in class.

What this section is for

Science is full of facts that have to be memorised before the interesting part can start — symbols, units, names — and memorising them is slow when the only feedback comes from a test weeks later. The tools here give that feedback immediately: every answer is marked on the spot, and every mistake shows the right answer and, where it helps, why it is right.

The first tool is the Element Symbols Quiz, which asks in both directions — from name to symbol and from symbol to name — across 78 elements in three levels. It is deliberately narrow: symbols are the vocabulary every formula is written in, and being fluent with them frees attention for the chemistry itself.

Where to start

A few facts about the periodic table

There are 118 confirmed elements. The last four — nihonium, moscovium, tennessine and oganesson — received their official names in 2016, which completed the table's seventh row. Nothing beyond element 92, uranium, occurs in nature in more than trace amounts; everything heavier has been made in laboratories.

The table's shape is not decoration. Elements in the same column share an outer electron arrangement and therefore behave alike, which is why sodium and potassium both react violently with water and why helium, neon and argon barely react with anything. Learning where a symbol sits tells you a great deal about the element before you know anything else about it.

Frequently asked questions

What is in the science section?
For now, the Element Symbols Quiz: 78 chemical elements in three difficulty levels, asked in both directions. More science practice will be added here over time.
Is it free?
Yes, completely. There is no account, no paywall and no limit on rounds.
Which school level does it suit?
The Essentials level matches what most secondary-school chemistry courses expect. The higher levels go beyond that and suit anyone preparing for more advanced exams or simply curious.
Can I use it in a lesson?
Yes. Project a round and answer as a class, or let students use their own phones. Nothing anyone types is sent anywhere.
Does it work on a phone?
Yes. The buttons are sized for touch and the layout switches to a single column on small screens.
Why learn symbols by heart?
Because every formula and equation is written in them. Someone who has to look up what Na or Cl means is spending attention on decoding instead of on the chemistry itself.