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






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






3. A structural formula in which electrons are represented by dots; dot pairs or dashes between two atomic symbols represent pairs in covalent bonds.






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






5. Chalcogens - - Oxide O






6. Small discrete increments of energy.






7. A reaction in which atoms of one element take the place of atoms of another element in a compound






8. 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






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






10. Acids defined as electron - pair acceptors and bases as electron - pair donors.






11. 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






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






13. The solubility of a gas in a liquid is directly proportional to the partial pressure of that gas on the surface of the liquid

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


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






15. A graph of pressure versus temperature that shows the conditions under which the phases of a substance exist






16. Alkaline Earth Metals - 2 valence electrons +2 ions - Magnesium Mg






17. A pair of equal and opposite electric charges or magnetic poles separated by a small distance






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






19. States that if a stress is applied to a system at equilibrium - the system shifts in the direction that relieves the stress.






20. An acid that will completely dissociate in aqueous solution - like HCl - HI - HClO4 HBr.






21. The area of chemistry that is concerned with reaction rates and reaction mechanisms






22. Halogens; ns2np5 - - 2nd most reactive group - The Halogens; very active because of need to fill; form -1 ions; 7 electrons in valence shell; tend to form salts with elements from groups 1A and 2A






23. Play- by- play showing the individual steps of a reaction - including the formation and destruction of any reaction intermediates that may occur.






24. A reaction where a compound does Not change its molecular structure.






25. Temperature is constant; effusion and temperature are proportional to the square root of their masses

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


26. An elementary particle with 0 charge and mass about equal to a proton






27. An ionic compound that resists changes in its pH






28. PH=pka+log[base/acid] Used in titration based problems that relates the pH or pOH of a solution to the pK and the ratio of the dissociated species.






29. A chemical bond that involves sharing a pair of electrons between atoms in a molecule






30. A set of spectral lines that appear in the visible light region when a hydrogen atom undergoes a transition from energy levels n>2 to n=2.






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






32. The tendency for an atom to attract electrons to itself when it is chemically combined with another element






33. Keq describes the ratio of product concentration to reactant concentration - with each raised to the power corresponding ot its coefficient ion in the balanced equation






34. A horizontal row of elements in the periodic table






35. Resulting positive nuclear charge an outer electron senses after accounting for the shielding effect of inner core electrons. Abbreviated as Z(eff). Increases from left to right - and bottom to top on the Periodic Table.






36. (chemistry) any theory in which all matter is composed of tiny discrete finite indivisible indestructible particles






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






38. One - half of the distance between the center of identical atoms that are not bonded together. Since effective nuclear charge increases when moving from left to right each additional electron is pulled more strogly toward the nucleus.






39. Solids in which the particles are arranged in a repeating - 3- D pattern - has a specific melting point - classified as ionic network covalent - metallic or molecular.






40. An atom or group of atoms that has a positive or negative charge






41. The formation of one or more covalent bonds between an electron pair donor and an electron pair acceptor






42. Have three valance electrons. In certain instances - some elements will loose three electrons - but they will also share electrons with another element to attain stability.






43. The point during a titration when the number of H+ ions and OH- ions are equal. This is at the middle of the steepest part of the titration curve.






44. Sum of all the masses - in AMU - present in one molecule of a molecular compound.






45. Named after their cation and anion






46. Systematic pairing of a deprotonated species (base) with its protonated form (conjugate acid). Conjugates appear on opposite sides of a chemical equation.






47. The intermolecular force in which a hydrogen atom that is bonded to a highly electronegative atom is attracted to an unshared pair of electrons of an electronegative atom in a nearby molecule






48. Structure that occurs when it is possible to draw two or more valid electron dot structures that have the same number of electron pairs for a molecule or ion






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






50. The weight in grams of one mole of a given elementand is expressedin tems of grams per mole.