Science quiz
Elements Venn diagram
Three rules about elements make three circles. Eight elements arrive one at a time, one for every region, the outside included.
- Format
- Venn diagram
- Items
- 8 to place
- Limit
- 3:00
- Level
- Hard
- Checked
- 2026.10.03
- To place
- 8 element names, one for each region
- Diagrams
- 7, dealt in turn
- Time limit
- 3:00
- A miss
- Loses that one; the right region is shown
- Each circle is a rule, written out in full beside the diagram. Click the region where the named place belongs: inside one, two or all three circles, or outside them all.
- Every region holds exactly one of the eight, so a region that is used is out of the running.
- Keys: 1 to 8 pick the numbered regions, S skips to the next name and comes back later.
- Pause whenever you like (Esc). The board hides while the clock is stopped.
Click the region of the diagram where each element belongs. The diagram and its three rules appear when you start.
About this quiz
Each play deals one diagram and eight elements from hydrogen to radon. Where an element sits is computed from the periodic table and its measured properties, and the figure behind every placement is shown at the end.
- There are 7 different diagrams, and every one has an element for all eight regions.
- An element whose density or melting point is within three percent of a circle's threshold is too close to call and is not asked in that diagram.
- A wrong click loses that element and the game goes on.
Sources
- [1]PubChem, National Institutes of Health. Periodic Table of Elements.
Last checked October 3, 2026
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