Can You Name?

Elements Classic · completed 14 Aug 2026 · top 10

32

32/118 elements named

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6:12.080

Placement

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Replay position · 32/32 · 6:12 / 6:12 · 28 missed

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6:12

6:12

Matter in your table

Your recalled elements connect into familiar matter.

These are constituent-element matches, not instructions for mixing elements. Ratios, bonds, structure, and reaction conditions decide what matter actually forms.

  1. CaCO₃COCa
    Element map · dotted links show shared membership, not chemical bonds

    Calcium, carbon, and oxygen put limestone on your map.

    Calcium carbonate is the principal chemical constituent of limestone and has the formula CaCO₃.

    PubChem: calcium carbonate

  2. HOH
    WaterH₂O
    HOOH
    Hydrogen peroxideH₂O₂

    Same elements. One extra oxygen. Very different matter.

    Water and hydrogen peroxide contain only hydrogen and oxygen, but their atom counts and O–O bonding differ. Element membership alone does not determine a substance.

    PubChem: water · hydrogen peroxide

  3. CO
    Carbon monoxideCO
    OCO
    Carbon dioxideCO₂

    The same two elements can draw two different gases.

    Carbon monoxide and carbon dioxide use the same element set in different ratios and structures: CO versus CO₂.

    PubChem: carbon monoxide · carbon dioxide

One element away

Nitrogen would complete the element set for C₈H₁₀N₄O₂.

N

All 32 elements named

Your complete run in recall order.

  1. Sb51

    Antimony

    #1 recalled

  2. As33

    Arsenic

    #2 recalled

  3. Al13

    Aluminum

    #3 recalled

  4. Se34

    Selenium

    #4 recalled

  5. Ni28

    Nickel

    #5 recalled

  6. Nd60

    Neodymium

    #6 recalled

  7. Np93

    Neptunium

    #7 recalled

  8. Ge32

    Germanium

    #8 recalled

  9. Fe26

    Iron

    #9 recalled

  10. Am95

    Americium

    #10 recalled

  11. Lu71

    Lutetium

    #11 recalled

  12. V23

    Vanadium

    #12 recalled

  13. La57

    Lanthanum

    #13 recalled

  14. Os76

    Osmium

    #14 recalled

  15. At85

    Astatine

    #15 recalled

  16. Ra88

    Radium

    #16 recalled

  17. Au79

    Gold

    #17 recalled

  18. Pa91

    Protactinium

    #18 recalled

  19. In49

    Indium

    #19 recalled

  20. Th90

    Thorium

    #20 recalled

  21. Tl81

    Thallium

    #21 recalled

  22. H1

    Hydrogen

    #22 recalled

  23. He2

    Helium

    #23 recalled

  24. O8

    Oxygen

    #24 recalled

  25. Ag47

    Silver

    #25 recalled

  26. C6

    Carbon

    #26 recalled

  27. Ca20

    Calcium

    #27 recalled

  28. Cu29

    Copper

    #28 recalled

  29. U92

    Uranium

    #29 recalled

  30. Pu94

    Plutonium

    #30 recalled

  31. Es99

    Einsteinium

    #31 recalled

  32. Co27

    Cobalt

    #32 recalled

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