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MCAT Organic Chemistry

Subjects : mcat, science
Instructions:
  • Answer 50 questions in 15 minutes.
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  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. If a compound is able to rotate plane polarized light.






2. Ozonolysis under hot acidic kmO4 - e.g. H2O2 condition






3. Alkene oxidized with this - strong oxidizing agent. CH3CO3H or mcpba and it makes epoxide or oxirane






4. Nitrogen containing compound - longest chain attached to nitrogen used in backbone. use e and replace with AMINE. if more complex molecule present - use prefix amino. IF additional group added - use N-






5. What are the best leaving groups?






6. Reaction of alkane with oxygen to form carbon dioxide - water and heat.






7. Non mirror image of configurational isomers. cis and trans alkenes are them. possible when a molecule has two or more stereogenic centers that differ at some but not alll of the centers. they require multiple chiral centers.






8. In which one or morehydrogen atoms are replaced with a halogen atom. via free radical substitution






9. Moleculse that have the opposite configuration at their one chiral center. or if multiple chiral centers - must have the opposite configuration at every one of their chiral centers to be enantiomers. identical physical properties and much of the same






10. Cleaves double bond in half - it only oxidizes the carbon to an aldehyde under reducing conditions. if ozidizing make same product as KMNO4






11. Propylenes attached to a backbone at the C-3 position. Meaning the double bond at end of the chain and single bonded carbon at rest






12. Alphabetical order of alkane rxn






13. Results when cyclic molecules must assume conformations that have eclipsed interactions






14. M - chloroperoxybenzoic acid






15. Common name for ethyne






16. Water can be added to alkenes under acidic conditions. make carbocation. ends with alcohol






17. Configuration in relation to another chiral molecule. use it to determine if a molecule is an enantiomer - diastereomer - etc






18. Carbonyl located in middle or somewhere in chane. Named with One






19. N - l - ml - ms






20. Carbon with four different substituents and lack a plane of symmetry






21. Carbonyl located at the end of the chain named by replacing al with e. e.g. butanal






22. Describes the exact spatial arrangement of groups of atoms independent of other molecules.






23. More likely it is to attract positively charged proton. nucleophilic strength decreses: RO->HO>RCO2>ROH>H2O






24. Spatial arrangement of the atoms or groups of a sterioisomer






25. O3






26. Diborane add to double bond. boron acts as lewis acid and attaches to less hindered carbon. hydride transferred to adjacent carbon. antimarkonikov - alcohol produced






27. Name for mathanal






28. Results when nonadjacent atoms or groups compete for space. dominant source of energy in flagpole interactions of the boat conformation. thus it goes in various conformations like chair boat and twist.






29. Occur when a molecule is broken down by heat. used to reduce the avverage molecular weight of heavy oils. c - c - bonds are cleave dand make small chain alkyl radicals that recombine to form different alkanes






30. Functionality is specified by alkoxy- prefix. ROR






31. Differ in position of substitutents attached to a double bond or cycloalkane. Cis or trans or e or z






32. Di - tri - t - sec - n -






33. Electrons of pi bond are reactive and easily attacked by molecules that want e pair e.g. electrophiles.






34. Three different substitutents often have plane of symmetry. and rotation of 180 will allow molecule to be superimposed on mirror image






35. Nonterminal alkenes are cleaved to form two molar equivalent of carvoxylic acid ..make keton






36. Hydrocarbon with one or more carbon carbon triple bond






37. Fast process. double bond is nucleophile and attack x2. make cyclic halonium ion with either br or cl. and make dihalo trans






38. Nucleus lover. electron rich species that are attracked to charged atoms






39. A molecule with an internal plane of symmetry






40. Object that is not superimposable upon mirror image






41. Name for propanal






42. Most similar. same molecule only at different points in their rotation. show them with newmans projections






43. Diols with hydroxyl group on adjacent carbon






44. Transfer of electrions from one atome to another






45. Arise from angle strain - torsional strian and nonbonded strain






46. A sigma bond and two pi bonds






47. Formed by mixing different types of orbitals






48. Charged - need electrons






49. No double bonds. it has the maximum number of hydrogens.






50. Methyl are 60 degrees apart. kinda stable