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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. Common name for ethyne






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






3. Diol with hydroxyl group on same carbon






4. 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






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






6. N - l - ml - ms






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






8. Three different substitutents often have plane of symmetry. and rotation of 180 will allow molecule to be superimposed on mirror image






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






10. When bond angles deviate from ideal values






11. Methyl are 60 degrees apart. kinda stable






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






13. What are the best leaving groups?






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






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






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






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






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






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






20. Charged - need electrons






21. 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.






22. Name for propanal






23. Name for mathanal






24. One s and three p orbitals






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






26. 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.






27. One s and two p 120 degree apart






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






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






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






31. A molecule with an internal plane of symmetry






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






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






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






35. Highest energy no separation. or 120 separation.






36. 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






37. Name for ethanal






38. O3






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






40. Alphabetical order of alkane rxn






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






42. F - CL - Br - I






43. What is produced when o3 with lialh4 or nabh4






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






45. A sigma bond and two pi bonds






46. 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






47. A = observed rotation / concentration * length






48. Monosubstituted ethylene






49. Compounds with halogen






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