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






2. When bond angles deviate from ideal values






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






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






5. Refers to the =CH2 group






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






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






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






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






10. 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






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. Arise from angle strain - torsional strian and nonbonded strain






13. Carbon carbon triple bonds. Suffix-yne.






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






15. One s and three p orbitals






16. 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






17. 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.






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






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






20. Highest energy no separation. or 120 separation.






21. Goal is to produce most stable carbocation

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






23. 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.






24. If a compound is able to rotate plane polarized light.






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






26. Sharing of electron between atoms






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






28. 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-






29. Iso - neo - cyclo






30. O3






31. Di - tri - t - sec - n -






32. Steps of free radical substitution






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






34. M - chloroperoxybenzoic acid






35. 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






36. Hydrocarbon with one or more carbon carbon triple bond






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






38. If reagent has a bunch of oxygen






39. Not solvated






40. F - CL - Br - I






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






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






43. Charged - need electrons






44. Common name for ethyne






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






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






47. Diol with hydroxyl group on same carbon






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






49. Name for mathanal






50. Contain carbon carbon double bonds. Use same root of alkane but end with 'ene'