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 amount of energy that reactants must absorb before a chemical reaction will start; also called free energy of activation.






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






3. A horizontal row of elements in the periodic table






4. 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.






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






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






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






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






9. Slightly less reactive than alkali metals - comprise group II






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






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






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






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






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






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






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






17. Large molecular structures - strong covalent bonding - share qualities of IONIC And COVALENT






18. 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.






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






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






21. 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.






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






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






24. (physics) the smallest discrete quantity of some physical property that a system can possess (according to quantum theory) E=hf






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






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






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






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






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. 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






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






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






33. The process by which a gas escapes from one container to another at lower pressure through a tiny hole in the container.






34. A naturally occurring or synthetic compound consisting of large molecules made up of a linked series of repeated simple monomers






35. 4 valence electrons +4 - -4 ions. - Carbon Group can form covalent bonds with nonmetals. Only carbon forms strong pi bonds






36. 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






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






38. A model of acids and bases which an acid is hydrogen ion donor and base is a hydrogen ion acceptor.






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






40. The reaction of the ions that characterize acids and the ions that characterize bases to form water molecules and a salt






41. Product of the molar concentrations of dissociated ions in solution at any point in the reaction other than equilibrium or saturation - where each ion is raised to the power of its stoichiometric coefficient. Denoted IP.






42. 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






43. 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






44. 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


45. 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






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






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






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






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






50. Small discrete increments of energy.