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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. A radical transfers a hydrogen atom to another radical and makes an alkane and alkene






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






3. When bond angles deviate from ideal values






4. Methyl are 60 degrees apart. kinda stable






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






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






7. M - chloroperoxybenzoic acid






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






9. Most favorable of staggared conformations






10. 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.






11. Carbon double bonded to an oxygen






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






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






14. 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.






15. Rotations cancel each other out therefore no optical activity






16. Zn/h or CH3/s with ozonolysis






17. A sigma bond and two pi bonds






18. Name for mathanal






19. Functionality is specified by alkoxy- prefix. ROR






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






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






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






23. 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






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






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






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






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






28. A = observed rotation / concentration * length






29. Iso - neo - cyclo






30. 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






31. Diol with hydroxyl group on same carbon






32. What are the best leaving groups?






33. Goal is to produce most stable carbocation


34. A molecule with an internal plane of symmetry






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






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






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






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






39. Not solvated






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






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






42. Diols with hydroxyl group on adjacent carbon






43. Carbon carbon triple bonds. Suffix-yne.






44. 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






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






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






47. Formed by mixing different types of orbitals






48. Is bonded to only one other carbon atom






49. N - l - ml - ms






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