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MCAT Organic Chemistry

Subjects : mcat, science
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • 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. Same molecular formula but different structure






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






3. Solvents with protons in solution - e.g. water or alcohol. large atoms tend to be better nucleophiles in here because they can shed the solvating protons around them and are more polarizable






4. When two p orbitals line up in parallel and electron clouds overlap. it exsits over a single bond.






5. A = observed rotation / concentration * length






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






7. Highest energy no separation. or 120 separation.






8. 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-






9. Not solvated






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






11. One s and two p 120 degree apart






12. 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






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






14. 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.






15. When two atomic orbitals combine. obtained mathematically by adding or subtracting wave functions. if sings are the same - make bonding - if different - less stable antibonding.






16. Use the Greek root for the number of carbons followed by the ending - - ane






17. Name for mathanal






18. Kmno4






19. Charged - need electrons






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






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






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






23. Creation of long - high molecular weight polymer composed of repeating subunit called monomers. occur through a radical mechanism.






24. Nonsuperimposable mirror image of chiral objects - a specific steroisomer.






25. 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.






26. Lowest priority group projects into the page






27. Compounds with halogen






28. Transfer of electrions from one atome to another






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






31. Hydrocarbon with one or more carbon carbon triple bond






32. In presence of peroxide - oxygen or ultraviolet light. antimarkonikov because they want a stable free radical. therefore X ends up on least subsituted carbon






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






34. What are the best leaving groups?






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






36. A sigma bond and two pi bonds






37. What is produced when o3 with lialh4 or nabh4






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






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






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






41. How many stereoisomers can a molecule have with n chiral centers






42. Share molecular formula but have different chemical and physical properties






43. Rotations cancel each other out therefore no optical activity






44. Name for ethanal






45. Di - tri - t - sec - n -






46. Alkenes oxidzed with kmno4 - if made with cold - dilue - make OH on each side of double bond - diols or glycol in syn orientation






47. Functionality is specified by alkoxy- prefix. ROR






48. Steps of free radical substitution






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






50. F - CL - Br - I