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






2. 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






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






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. 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. 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.






7. Small discrete increments of energy.






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






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






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






11. The center of the atom which contains the protons and neutrons; in cells - structure that contains the cell's genetic material (DNA) and controls the cell's activities






12. An equilibrium expression used to measure weak - acid strength - given by the ratio of the product of the products' molar concentrations to the product of the reactants' molar concentrations - with each term raised to the power of its stoichiometric






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






14. 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






15. 5 different orbitals shaped like clover leaves and max electrons is 10






16. One - half the distance between the nuclei of two atoms of the same element when the atoms are joined






17. 5 valence electrons -3 ions - Nitride N






18. 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.






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






20. 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


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






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






23. (chemistry) p(otential of) H(ydrogen)






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






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






26. A physical property of a solution that depends on the number - but not the identity - of the disswolved solute particles; example properties include vapor pressure lowering - boiling point elevation - osmotic pressure - and frezzing point depression






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






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






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






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






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






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






33. 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


34. The nuclear charge experienced by the outermost electrons of an atom (actual charge minus the shielding caused by inner shells: Z- eff)






35. The molar amount of a solute that can dissolve in 1L of solvent until equilibrium - saturation - is reached






36. 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






37. The quantum number that indicates the main energy level occupied by the electron. Can theoretically take on any positive interger. Denoted by the letter n.






38. 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






39. An ionic compound that resists changes in its pH






40. E=hc/?






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






42. In a solution - the substance that dissolves in the solvent






43. 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.






44. 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.






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






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






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






48. The ways in which electrons are arranged in various orbitals around the nuclei of atoms






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






50. States that it is impossible to determine simultaneously both the position and momentum of an electron or any other particle