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Across 2. a three-carbon alkane, normally a gas, but compressible to a liquid that is transportable 4. Also known as saturated hydrocarbons 7. 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) 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-) 11. These organic compounds are members of the carbonyl group 14. a functional group in organic chemistry that has the structure R1-S-R2 15. 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 19. a special branch of chemical synthesis and is concerned with the construction of organic compounds via organic reactions 21. a compound that contains the functional group composed of a sulfur atom and a hydrogen atom 24. an organic chemical compound that contains aromatic rings (arenes) like benzene, pyridine, or indole 29. an organic compound that has two acyl groups bound to the same oxygen atom 34. chemical reactions involving organic compounds 35. any organic compound in which a hydroxyl group (-OH) is bound to a carbon atom of an alkyl or substituted alkyl group 36. a chemical compound with the molecular formula CH4 37. organic compounds and a type of functional group that contain nitrogen as the key atom 38. a chemical compound with chemical formula C2H6 39. the functional group characterized by a carbonyl group (O=C) linked to two other carbon atoms

Down 1. the most stable of all the carbonyl functional groups 2. in organic chemistry it is an ester of phosphoric acid 3. These organic compounds are synthesized from the dehydration of an alcohol and a carboxylic acid 5. chemical compound containing a sulfinyl functional group attached to two carbon atoms 6. the chemical element represented by the symbol H and an atomic number of 1 9. a bond in which two pairs of electrons are shared between two atoms 10. consist of an inorganic or organic acid in which at least one -OH (hydroxy) group is replaced by an -O-alkyl (alkoxy) group 12. These organic compounds are very important in organisms for the storage and transfer of energy 13. :a chemical element with the symbol C and atomic number 6 16. Any of a class of chemical compounds in which the nitro group (NO2) forms part of the molecular structure 17. specific groups of atoms within molecules that are responsible for the characteristic chemical reactions of those molecules 18. organic compounds and a type of functional group that contain nitrogen as the key atom 20. the unbranched alkane with four carbon atoms, CH3CH2CH2CH3 22. it estimates whether a planar ring molecule will have aromatic properties 23. It has the formula -CH3 and is very often abbreviated as -Me in the structure of a molecule 25. organic acids characterized by the presence of a carboxyl group, which has the formula -C(=O)OH, usually written -COOH or -CO2H 26. 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 27. a single covalent bond derived from the coupling of thiol groups,the overall connectivity is C-S-S-C 28. the sharing of two electrons between two atoms, represented in formulas as C:C or C-C 30. an unsaturated chemical compound containing at least one carbon-to-carbon double bond 31. organic compound consisting entirely of hydrogen and carbon 32. is any organic compound which has a -C≡N functional group 33. an organic chemical compound with the formula C6H6