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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. 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






2. A molecule with an internal plane of symmetry






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






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






5. Functionality is specified by alkoxy- prefix. ROR






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






7. Name for ethanal






8. 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.






9. Rotations cancel each other out therefore no optical activity






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






11. A sigma bond and two pi bonds






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






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






14. What is produced when o3 with lialh4 or nabh4






15. Alphabetical order of alkane rxn






16. N - l - ml - ms






17. Goal is to produce most stable carbocation

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






19. Refers to the =CH2 group






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






21. Highest energy no separation. or 120 separation.






22. M - chloroperoxybenzoic acid






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






24. 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






25. 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






26. One s and two p 120 degree apart






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






28. One s and three p orbitals






29. Monosubstituted ethylene






30. A = observed rotation / concentration * length






31. 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.






32. F - CL - Br - I






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






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






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






36. Combustion reaction occurs through a radical process






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






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






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






40. Methyl are 60 degrees apart. kinda stable






41. When boat flips






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






43. Always receive number one. contain carbonyl and OH group - very oxidized. highest priority functional group.






44. Kmno4






45. 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






46. 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






47. Charged - need electrons






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






49. Sharing of electron between atoms






50. Name for propanal