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Guided games

Build molecules one step at a time. Play a ready-made game, or make your own for a class.

Ready-made games

First molecules

Level 1 · basics · 8 steps · Easy

Small everyday molecules: two-atom gases, water, carbon dioxide and ammonia. Good first game.

Preview
  1. Hydrogen gas H2
  2. Oxygen gas O2
  3. Nitrogen gas N2
  4. Hydrogen fluoride HF
  5. Water H2O
  6. Carbon dioxide CO2
  7. Ammonia H3N
  8. Methane CH4
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Hydrocarbons

Level 2 · organic · 8 steps · Easy

Only carbon and hydrogen: alkanes (single bonds), alkenes (a double bond) and alkynes (a triple bond).

Preview
  1. Methane CH4
  2. Ethane C2H6
  3. Propane C3H8
  4. Butane C4H10
  5. Ethene (ethylene) C2H4
  6. Propene C3H6
  7. Acetylene C2H2
  8. Propyne C3H4
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Alcohols

Level 3 · organic · 7 steps

Alcohols have an –OH group on a carbon. Finish with molecules that have two and three –OH groups.

Preview
  1. Methanol CH4O
  2. Ethanol C2H6O
  3. 1-Propanol C3H8O
  4. 2-Propanol C3H8O
  5. 1-Butanol C4H10O
  6. Ethylene glycol C2H6O2
  7. Glycerol C3H8O3
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Acids

Level 3 · organic · 9 steps

Carboxylic acids have a –COOH group (C=O and C–O–H on the same carbon). Also carbonic and sulfuric acid.

Preview
  1. Formic acid CH2O2
  2. Acetic acid C2H4O2
  3. Propionic acid C3H6O2
  4. Oxalic acid C2H2O4
  5. Lactic acid C3H6O3
  6. Pyruvic acid C3H4O3
  7. Carbonic acid CH2O3
  8. Sulfuric acid H2O4S
  9. Octanedioic acid (Suberic acid) C8H14O4
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Sugars

Level 4 · biomolecules · 7 steps

Simple sugars in their open-chain form (in water they mostly form rings, which this game does not check). Glucose and fructose have the same formula but a different structure.

Preview
  1. Glyceraldehyde C3H6O3
  2. Dihydroxyacetone C3H6O3
  3. Erythrose C4H8O4
  4. Ribose C5H10O5
  5. Deoxyribose C5H10O4
  6. Glucose C6H12O6
  7. Fructose C6H12O6
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Isomers

Level 4 · structure · 12 steps

Pairs with exactly the same atoms joined in a different way. Structure check: only the asked-for arrangement is accepted.

Preview
  1. Ethanol C2H6O
  2. Dimethyl ether C2H6O
  3. 1-Propanol C3H8O
  4. 2-Propanol C3H8O
  5. Butane C4H10
  6. Isobutane (2-methylpropane) C4H10
  7. Propanal C3H6O
  8. Acetone C3H6O
  9. 1,2-Dichloroethene C2H2Cl2
  10. 1,1-Dichloroethene C2H2Cl2
  11. Acetic acid C2H4O2
  12. Methyl formate C2H4O2
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Halogen compounds

Level 3 · organic · 11 steps

Molecules with fluorine or chlorine. Halogens make one bond each.

Preview
  1. Hydrogen chloride HCl
  2. Fluoromethane CH3F
  3. Chloromethane CH3Cl
  4. Dichloromethane CH2Cl2
  5. Chloroform CHCl3
  6. Carbon tetrachloride CCl4
  7. Carbon tetrafluoride CF4
  8. 1,2-Dichloroethane C2H4Cl2
  9. 1,1,1-Trichloroethane C2H3Cl3
  10. 1-Chloropropane C3H7Cl
  11. Sulfur hexafluoride F6S
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Nitrogen compounds

Level 4 · organic · 7 steps

Nitrogen makes three bonds. From ammonia to urea, an amino acid and a DNA base.

Preview
  1. Ammonia H3N
  2. Methylamine CH5N
  3. Hydrogen cyanide CHN
  4. Urea CH4N2O
  5. Glycine C2H5NO2
  6. Oxamide C2H4N2O2
  7. Cytosine C4H5N3O
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My games

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