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. Have the shape of a sphere - with the center of the sphere at the nucleus; completely symmetrical along all axes; 1s orbital is spherically symmetric and has no nodes; 2s orbital is also spherical but contains a node and is higher in energy






2. Attractive and repulsive forces between molecules that are weaker than forces within molecules.






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






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






5. 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






6. 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


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






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






9. Charge assigned to an atom in a molecule or polyatmic ion - calculated by (# valence electrons) - (# 1/2 bonding electrons) - (# nonbonding electrons). Molecules containing atoms with lower formal charges tend to be more stable than those with higher






10. An ionic compound that resists changes in its pH






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






12. 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.






13. Two or more atoms held together by covalent bonds






14. Standard Temperature and Pressure. 273 Kelvin (0 Celsius) - 1 atmosphere (760 torr - 760 kPA).






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






16. PH of a molecule at which it contains no net electric charge - isoelectric point.






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






18. 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






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






20. Atoms react by gaining or losing electrons so as to acquire the stable electron structure of a noble gas - usually eight valence electrons






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






22. A subatomic particle that has a positive charge and that is found in the nucleus of an atom Charge of +1 and mass of 1.0073 amu






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






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






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






26. Tells you how much solute is present compared to the amount of solvent






27. The ratio of the actual yield to the theoretical yield for a chemical reaction expressed as a percentage; a measure of the efficiency of a reaction






28. 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


29. The energy required to remove an electron from a gaseous atom; generally increases in moving from left - to - right across a period and decreases in moving down a group






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






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






32. A bond formed when two atomic orbitals combine to form a molecular orbital that is symmetrical around the axis connecting the two atomic nuclei






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






34. Sol - a chemical process in which solvent molecules and molecules or ions of the solute combine to form a compound






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






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






37. A reaction in which two or more substances combine to form a single substance A+B>>>>>>>C






38. The process by which one or more substances change to produce one or more different substances






39. An emperimentally determined mathmatical expression showing the rate of a reaction as a function of the concentration of its reactants






40. Elements in the middle of the periodic table - in groups 3-12.






41. Chalcogens - - Oxide O






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






43. Expression of auto - ionization of water into H+ and OH- at a certain temperature - given by the product of the ions' molar concentrations. Denoted by Kw and equal to 10-






44. Set of spectral lines appearing in the UV region when a hydrogen atom undergoes a transition from energy levels n>1 to n=1.






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






46. 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.






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






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






49. Contains nonmetals that are non - reactive. Full outermost energy level except helium which has 2.






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







Sorry!:) No result found.

Can you answer 50 questions in 15 minutes?


Let me suggest you:

Browse all subjects

Browse all tests

Most popular tests



Major Subjects

Tests & Exams


AP
CLEP
DSST
GRE
SAT
GMAT

Browse all subjects

Browse all tests

Most popular tests