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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. 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.






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






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






4. 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






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






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






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






8. 5 valence electrons -3 ions - Nitride N






9. 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.






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






11. Simplest whole # ration of atoms in a compound






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






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






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






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






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






17. 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






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






19. E=hc/?






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






21. Common definition of acids as proton (H+) donors and bases as proton acceptors






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






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






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






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






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






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






28. 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






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






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






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






32. 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






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






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






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






36. A graph of pressure versus temperature that shows the conditions under which the phases of a substance exist






37. 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.






38. One - half of the distance between the center of identical atoms that are not bonded together. Since effective nuclear charge increases when moving from left to right each additional electron is pulled more strogly toward the nucleus.






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






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






41. 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






42. 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






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






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






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






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






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






48. 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






49. Temperature is constant; effusion and temperature are proportional to the square root of their masses


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