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






2. Monosubstituted ethylene






3. Carbon carbon triple bonds. Suffix-yne.






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






5. Rotations cancel each other out therefore no optical activity






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






7. Combustion reaction occurs through a radical process






8. Name for propanal






9. Diol with hydroxyl group on same carbon






10. N - l - ml - ms






11. M - chloroperoxybenzoic acid






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






13. Compounds with halogen






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






15. Formed by mixing different types of orbitals






16. 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






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






18. Kmno4






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






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






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






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






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






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






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






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






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






28. Transfer of electrions from one atome to another






29. Diols with hydroxyl group on adjacent carbon






30. 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






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






32. What are the best leaving groups?






33. Refers to the =CH2 group






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






35. 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.






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






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






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






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






40. When bond angles deviate from ideal values






41. Charged - need electrons






42. Common name for ethyne






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






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






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






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. Methyl are 60 degrees apart. kinda stable






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






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






50. Highest energy no separation. or 120 separation.