Test your basic knowledge |

MCAT 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. A solution in which water is the solvent






2. The ratio of the number of moles of solute dissolved in one kilogram of solvent. molality (M = moles solute/kg of solution)






3. The Percent by mass of each element in a compound.






4. Alkali metals: highly reactive - therefore always compounds. - 1 valence electron +1 ion - Hydrogen H? - Lithium Li? - Sodium Na? - Potassium K? - Rubidium Rb? - Cesium Cs?






5. Specifies the specific orbital in which the electron is most likely to be found. - Third quantum number - designated as ml. Describes a particular orbital within a subshell where an electron is very likely to be found. Possible values are integers in






6. E=hc/?






7. The sum of the exponents in a rate law - where each exponent provides the reaction order with respect to its reactants






8. A concentration unit of a solution expressed as moles of solute dissolved per liter of solution






9. Numbers that specify the properties of atomic orbitals and of their electrons






10. The process of decomposing a chemical compound by the passage of an electric current.






11. A dynamic condition in which two opposing changes occur at equal rates in a closed system






12. Process by which molecules tend to move from an area where they are more concentrated to an area where they are less concentrated






13. An atom - ion - or molecule that donates an electron pair to form a covalent bond.






14. The weight in grams of compound that can be substituted by 1 atom of Hydrogen. GEW = MW / # of acidic Hyrdogens






15. The amount of a substance that contains as many particles as there are atoms in exactly 12g of carbon -12






16. The energy required to break a chemical bond and form neutral isolated atoms






17. A definite stable energy that a physical system can have






18. 1913 - Niels Bohr - said that electrons formed specific layers instead or random ones - said atoms atoms absorb and give off energy when the electrons move from one shell to another






19. Energy released when an atom or ion in the gaseous state gains an electron. Increases from left to right and from bottom to top on the Periodic Table.






20. When a solute is dissolved in a solvent - it will dissociate until reaching an equilibrium point at which the rate of dissociation equals the rate of precipitation of the solute - regardless of any additional solute introduced into the mixture






21. Theory stating that the rate of a reaction is directly proportional to the number of collisions that take place between reactants per second.






22. Product of the molar concentrations of dissociated ions in solution at any point in the reaction other than equilibrium or saturation - where each ion is raised to the power of its stoichiometric coefficient. Denoted IP.






23. Sum of the protons and neutrons in an element often denoted by the letter A






24. The slowest elementary step which is the limit for the rate of the other steps






25. Contains nonmetals - 7 valence electrons in it's outermost energy level. Very reactive






26. A subdivision of an energy level in an atom. They are divided into orbitals.






27. Attractions between molecules caused by the electron motion on one molecule affecting the electron motion on the other through electrical forces; these are the weakest interactions between molecules






28. Any sample of a given compound will contain the same elements in the identical mass ratio.






29. A base that can accept two moles of H+ per mole of itself (ex: SO4






30. (chemistry) a series from actinium to lawrencium of 15 radioactive elements with increasing atomic numbers






31. The amount of energy that reactants must absorb before a chemical reaction will start; also called free energy of activation.






32. The pressure exerted by a vapor in equilibrium with its liquid or solid phase






33. A covalent bond in which the bonding electrons are shared equally by the bonded atoms - resulting in a balanced distribution of electrical charge






34. (chemistry) a substance formed by chemical union of two or more elements or ingredients in definite proportion by weight






35. The reaction of the ions that characterize acids and the ions that characterize bases to form water molecules and a salt






36. A substance that - when dissolved in water - results in a solution that can conduct electricity






37. A representation of a displacement reaction showing only the reactive species and omitting the spectator ions.






38. An atom - radical - or molecule that has gained or lost one or more electrons and has a negative or positive charge






39. A measured amount of a solution of unknown concentration is added to a known volume of a second solution until the reaction between them is just complete






40. Redox reaction - in which the same species is both oxidized and reduced.






41. The amount of product that can be made in a chemical reaction based on the amount of limiting reactant






42. Nh/2p The angular momentum changes only in discete amounts with respect to the quantum number. Also E=- R_h/n^2






43. Orbitals of equal energy are each occupied by one electron before any orbital is occupied by a second electron - and all electrons in singly occupied orbitals must have the same spin

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


44. The point on a phase diagram that represents the only set of conditions at which all three phases exist in equilibrium with one another






45. A solid made up of particles that are not arranged in a regular pattern.






46. Small discrete increments of energy.






47. The number of atoms in exactly 12 g of pure 12c and equal to 6.022 x 10^23 is called






48. (chemistry) the sum of the relative atomic masses of the constituent atoms of a molecule






49. A chemical reaction involving the transfer of one or more electrons from one reactant to another; also called oxidation - reduction reaction.






50. Having characteristics of both an acid and a base and capable of reacting as either