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






2. Named after their cation and anion






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






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






5. 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






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. Slightly less reactive than alkali metals - comprise group II






8. A reaction where a compound does Not change its molecular structure.






9. A horizontal row of elements in the periodic table






10. 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.






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






12. When polar molecules orient themselves such that the positive region of one molecule is close to the negative region of another molecule.






13. Small discrete increments of energy.






14. A chemical bond in which one atom loses an electron to form a positive ion and the other atom gains to electron to form a negative ion






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






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






17. 5 valence electrons -3 ions - Nitride N






18. The process by which one or more substances change to produce one or more different substances






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






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






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






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






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






24. A set of spectral lines that appear in the visible light region when a hydrogen atom undergoes a transition from energy levels n>2 to n=2.






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






26. 4 valence electrons +4 - -4 ions. - Carbon Group can form covalent bonds with nonmetals. Only carbon forms strong pi bonds






27. 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.






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






29. 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






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






31. 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






32. 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






33. 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


34. (chemistry) any theory in which all matter is composed of tiny discrete finite indivisible indestructible particles






35. 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.






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






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






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






39. A representation of a displacement reaction showing only the reactive species and omitting the spectator ions.






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






41. 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






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






43. The lowest allowable energy state of an atom






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






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






47. The number of atoms in exactly 12 g of pure 12c and equal to 6.022 x 10^23 is called






48. An ionic compound that resists changes in its pH






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






50. 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