| Answer | Crossword Clue |
|---|---|
| BUTENE | Carbon compound found in crude oil |
| hydrocarbon | a compound of hydrogen and carbon with nothing else, occurring notably in oil, natural gas and coal |
| hydrocarbons | HYDROCARBON, a compound of hydrogen and carbon with nothing else, occurring notably in oil, natural gas and coal |
| polyunsaturated | (of an organic compound, esp. a fat or oil molecule) Containing several double or triple bonds between carbon atoms. Polyunsaturated fats, which are usually of plant origin, are regarded as healthier in the diet than saturated fats |
| cementite | a compound of iron and carbon found in cast iron |
| cementites | CEMENTITE, a compound of iron and carbon found in cast iron |
