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Across 1. :a chemical element with the symbol C and atomic number 6 3. organic compounds and a type of functional group that contain nitrogen as the key atom 5. group of chemical compounds, consisting of alkanes, such as methane or ethane, with one or more halogens linked, such as chlorine or fluorine, making them a type of organic halide 8. Also known as saturated hydrocarbons 9. organic compound consisting entirely of hydrogen and carbon 14. in organic chemistry it is an ester of phosphoric acid 15. it estimates whether a planar ring molecule will have aromatic properties 17. any organic compound in which a hydroxyl group (-OH) is bound to a carbon atom of an alkyl or substituted alkyl group 18. It has the formula -CH3 and is very often abbreviated as -Me in the structure of a molecule 20. a three-carbon alkane, normally a gas, but compressible to a liquid that is transportable 27. chemical compound containing a sulfinyl functional group attached to two carbon atoms 28. a special branch of chemical synthesis and is concerned with the construction of organic compounds via organic reactions 29. specific groups of atoms within molecules that are responsible for the characteristic chemical reactions of those molecules 30. the unbranched alkane with four carbon atoms, CH3CH2CH2CH3 31. a single covalent bond derived from the coupling of thiol groups,the overall connectivity is C-S-S-C 34. are molecules with the same chemical formula and often with the same kinds of chemical bonds between atoms, but in which the atoms are arranged differently (analogous to a chemical anagram) 35. is any organic compound which has a -C≡N functional group 37. a bond in which two pairs of electrons are shared between two atoms 38. a chemical compound with chemical formula C2H6 39. These organic compounds are very important in organisms for the storage and transfer of energy

Down 2. an organic chemical compound with the formula C6H6 4. These organic compounds are members of the carbonyl group 6. an organic chemical compound that contains aromatic rings (arenes) like benzene, pyridine, or indole 7. organic compounds and a type of functional group that contain nitrogen as the key atom 8. functional group, which consists of a carbon atom bonded to a hydrogen atom and double-bonded to an oxygen atom (chemical formula O=CH-) 10. the chemical element represented by the symbol H and an atomic number of 1 11. a compound that contains the functional group composed of a sulfur atom and a hydrogen atom 12. consist of an inorganic or organic acid in which at least one -OH (hydroxy) group is replaced by an -O-alkyl (alkoxy) group 13. it involves the nucleophilic addition of a ketone enolate to an aldehyde to form a β-hydroxy ketone, or "aldol" (aldehyde + alcohol), a structural unit found in many naturally occurring molecules and pharmaceuticals 16. an unsaturated chemical compound containing at least one carbon-to-carbon double bond 19. a chemical compound with the molecular formula CH4 21. chemical reactions involving organic compounds 22. Any of a class of chemical compounds in which the nitro group (NO2) forms part of the molecular structure 23. a functional group in organic chemistry that has the structure R1-S-R2 24. organic acids characterized by the presence of a carboxyl group, which has the formula -C(=O)OH, usually written -COOH or -CO2H 25. an organic compound that has two acyl groups bound to the same oxygen atom 26. the sharing of two electrons between two atoms, represented in formulas as C:C or C-C 32. the most stable of all the carbonyl functional groups 33. the functional group characterized by a carbonyl group (O=C) linked to two other carbon atoms 36. These organic compounds are synthesized from the dehydration of an alcohol and a carboxylic acid