Science quiz
Chemical formulas match: formula to compound
Twenty four common compounds. Each formula appears in turn: click the name of the compound.
- Format
- Pick the match
- Items
- 15 to match
- Limit
- 1:15
- Level
- Medium
- Checked
- 2026.10.03
A fresh 15 of the 24 each time. Today's first round is the same for everyone.
- Prompts
- 15
- Bank
- Compound buttons, A to Z
- Time limit
- 1:15
- A miss
- Shows the answer, then moves on
- Each formula appears in turn. Click its match in the bank.
- Used answers leave the bank. Keys 1 to 9 pick the first nine buttons; type a name to jump to it.
- Skip (0) sends a prompt to the back of the queue.
- Pause whenever you like (Esc). The board hides while the clock is stopped.
Click the compound each formula stands for. The bank appears when you start.
About this quiz
A matching round built on the list behind Ribbia's Common chemical formulas quiz: 24 pairs in all.
- Each round takes 15 of the 24 formulas.
- A miss shows the right compound before the next formula appears.
Sources
- [1]PubChem, National Institutes of Health. PubChem compound database.
Note on the data. Formulas and names are the hint and answer of each row of that quiz. Each name was looked up in PubChem on 3 October 2026 and its molecular formula compared with the one shown here. Formulas are written in the conventional order (NaCl, H₂SO₄), which lists the same atoms as PubChem's Hill notation. Everyday names such as table salt and baking soda are accepted.
Last checked October 3, 2026
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