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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. Arise from angle strain - torsional strian and nonbonded strain






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






3. 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.






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






5. Hydrocarbon with one or more carbon carbon triple bond






6. When boat flips






7. 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






8. Diol with hydroxyl group on same carbon






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






10. Most favorable of staggared conformations






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






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






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






14. F - CL - Br - I






15. 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






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






17. Highest energy no separation. or 120 separation.






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






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






20. When a molecular orbital is formed head to head or tail to tail. all single bonds are tehese.






21. Diols with hydroxyl group on adjacent carbon






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






23. Refers to the =CH2 group






24. Zn/h or CH3/s with ozonolysis






25. 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.






26. Combustion reaction occurs through a radical process






27. One s and two p 120 degree apart






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






29. A molecule with an internal plane of symmetry






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






31. A sigma bond and two pi bonds






32. Methyl are 60 degrees apart. kinda stable






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






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






35. Two hydroxyl groups






36. Transfer of electrions from one atome to another






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






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






39. Kmno4






40. Rotations cancel each other out therefore no optical activity






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






42. Carbon double bonded to an oxygen






43. O3






44. 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






45. Goal is to produce most stable carbocation

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






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






48. Formed by mixing different types of orbitals






49. When bond angles deviate from ideal values






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