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 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






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






3. The quantum number that has only two possible values - +1/2 and -1/2 - which indicate the two fundamental spin states of an electron in an orbital






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






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






6. Spectrum of certain absorbed wavelengths of light corresponding to an atom's spectrum of emitted frequencies of light. Unique to each element. AAS can be used to indentify an element.






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






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






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






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






11. Valence Shell Electron Pair Repulsion theory - stating that the three - dimensional molecular geometry about some central atom is determined by the elctronic repulsion between its bonding and nonbonding electron pairs.






12. 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






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






14. 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






15. 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






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






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






18. The vapor pressure of solution is the product of the mole fraction of the solvent and the vapor pressure of the pure solvent. P_a=X_aP_total

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


19. (chemistry) separation of a substance into two or more substances that may differ from each other and from the original substance






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






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






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






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






24. Small discrete increments of energy.






25. 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






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






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






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






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






30. An element in an 'A' group in the periodic table; as a group these elements display a wide range of physical and chemical properties. In their atoms - the s and p sublevels in the highest occupied energy level are partially filled






31. The molar solubility of one salt is reduced when another salt - having a common ion is brought into the same solution






32. The percent by mass of each element in a compound






33. 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.






34. 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






35. 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






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






37. The average distance between the nuclei of two bonded atoms






38. When dipoles are dissolved in a solution where ions are present ions wil arrange themselves with the opposite charged end of the dipole.






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






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






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






42. Product of the molar concentrations of dissociated ions in solution at saturation - where each ion is raised to the power of its stoichiometric coefficient. Denoted Ksp.






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






44. 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-






45. At a constant pressure - the volume of an ideal gas is directly proportinal to its temperature: V (a) T

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


46. A solution in which water is the solvent






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. 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






49. The lowest allowable energy state of an atom






50. (chemistry) separation of a substance into two or more substances that may differ from each other and from the original substance C>>>>A+B






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