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






2. 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






3. 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-






4. 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






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






6. Combustion reaction occurs through a radical process






7. Formed by mixing different types of orbitals






8. What are the best leaving groups?






9. Methyl are 60 degrees apart. kinda stable






10. Object that is not superimposable upon mirror image






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






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






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






14. Kmno4






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






16. O3






17. When bond angles deviate from ideal values






18. Zn/h or CH3/s with ozonolysis






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






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






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






22. Not solvated






23. When boat flips






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






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






26. Two hydroxyl groups






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






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






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






30. Goal is to produce most stable carbocation

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31. Diols with hydroxyl group on adjacent carbon






32. A molecule with an internal plane of symmetry






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






34. Hydrocarbon with one or more carbon carbon triple bond






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. Steps of free radical substitution






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






38. 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.






39. Same molecular formula but different structure






40. Di - tri - t - sec - n -






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






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






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






44. One s and two p 120 degree apart






45. 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.






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






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






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






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






50. Sharing of electron between atoms