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






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






3. A fundamental constant - h - that relates the energy of light quanta to their frequency: h = 6.6 X 10^-34 joule

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


4. No two electrons or protons or neutrons in a given system can be in states characterized by the same set of quantum numbers






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






6. 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


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






8. 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.






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






10. 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






11. A set of frequencies of electromagnetic waves given off by atoms of an element; consists of a series of fine lines of individual colors






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






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






14. 4 valence electrons +4 - -4 ions. - Carbon Group can form covalent bonds with nonmetals. Only carbon forms strong pi bonds






15. Property of the elements that can be predicted from the arrangement of the periodic table






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






17. Defined acids as subtsances that produced H ions in water - while bases produced OH ions. When they reacted together - H and OH neutralise to make water






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






19. A horizontal row of elements in the periodic table






20. 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






21. Small discrete increments of energy.






22. The weak attractive forces between molecules resulting from the small - instantaneous dipoles that occur because of the varying positions of the electrons during their motion about nuclei






23. Second quantum number - designated by the letter 'l.' This 'angular momentum' refers to the subshells within each principle quantum energy level. It can take on the value of an integer in the 0 to (n -1) range. The four subshellscorresponding to l=0






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






25. Where half of the acid is neutralized by the base on a titration curveAn acid dissociation constant - Ka - (also known as acidity constant - or acid - ionization constant) is a quantitative measure of the strength of an acid in solution. It is the eq






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






27. Side - to side parallel orbitals overlap to share electrons - the 2nd/3rd covalent bond between two atoms - cannot rotate and maintain the bond.






28. 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






29. 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


30. (chemistry) a substance that changes color to indicate the presence of some ion or substance






31. 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






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






33. 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






34. 2.18 x 10^-18 J/electron






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






36. Mixture of 2 or more substances that distills at a constant temperature and with constant composition - even though seperately the components have different boiling points






37. Two or more atoms held together by covalent bonds






38. 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






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






40. Substance in which a solute is dissolved to form a solution






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






42. 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-






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






44. Gram equivalent weight of solute per liter of solution - often denoted by N.






45. Region in a molecule where atomic orbitals overlap - resulting in either a stable low - energy bonding orbital or an unstable high - energy antibonding orbital.






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






47. 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






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






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






50. The hypothetical equation showing only the species that is oxidized or reduced in a redox reaction and the correct number of electrons transferred between the species in the complete - balanced equation.







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