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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. Iso - neo - cyclo






2. Methyl are 60 degrees apart. kinda stable






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






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






5. 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.






6. One s and three p orbitals






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






8. Diol with hydroxyl group on same carbon






9. Highest energy no separation. or 120 separation.






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






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. Di - tri - t - sec - n -






13. E of double bond act as lewis base and react with hydrogen of hx. make carbocation intermediate. use markonikovs rule






14. What is produced when o3 with lialh4 or nabh4






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






16. Functionality is specified by alkoxy- prefix. ROR






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






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






19. Common name for ethyne






20. Same chemical formula. same atomic connectivity . different in how atoms are arranged in space






21. Y = position of double bond - x is position of triple bond - root is the prefix representing the length of the principal carbon chain






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






23. A sigma bond and two pi bonds






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






25. Rotations cancel each other out therefore no optical activity






26. Two hydroxyl groups






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






28. A = observed rotation / concentration * length






29. Steps of free radical substitution






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






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






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






33. Reducing an alkene by adding molecular hydrogen to double bond with aid of metal catalyst. e.g. pt - pd - ni. takes place on surface of metal so it does syn addition






34. One s and two p 120 degree apart






35. When boat flips






36. Most favorable of staggared conformations






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






38. Combustion reaction occurs through a radical process






39. Chain of carbons connected by single bonds with hydrogen atoms attached.






40. Diols with hydroxyl group on adjacent carbon






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






42. What are the best leaving groups?






43. Object that is not superimposable upon mirror image






44. 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






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






46. Palladium or barium sulfate (BaSO4) with quinoline. occur on metal surface - make cis.


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






48. Two p orbital form pi and third p orbital combine with s to make two sp hybrid. 180 degree apart






49. Sharing of electron between atoms






50. O3