Sub-topic 1
2025 · National Preliminary
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Elements with atomic number above 10 whose symbol starts with h
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Sub-topic 2
2023 · National Preliminary
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Naming an element from its two-letter symbol's first letter
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Sub-topic 3
2012 · National Preliminary
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Naming elements from their chemical symbols: w (tungsten) and tl (thallium)
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Sub-topic 4
2013 · National Quarterfinal
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Element symbols derived from latin names: sn, pb, na
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Sub-topic 5
2016 · National Preliminary
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True or false: chemical symbols of antimony, germanium and tungsten
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Sub-topic 6
2023 · National Preliminary
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Element symbols: rh=rhodium, ra=radium, te=tellurium
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