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 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






2. 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






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






4. 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






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






6. 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


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






8. Small discrete increments of energy.






9. A solid made up of particles that are not arranged in a regular pattern.






10. 5 valence electrons -3 ions - Nitride N






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






12. 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






13. 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






14. 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.






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






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






17. 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






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






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






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






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






22. 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


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






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






25. A chemical bond that involves sharing a pair of electrons between atoms in a molecule






26. 5 different orbitals shaped like clover leaves and max electrons is 10






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






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






29. 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.






30. 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


31. The weight in grams of compound that can be substituted by 1 atom of Hydrogen. GEW = MW / # of acidic Hyrdogens






32. E=hc/?






33. Side - to side parallel orbitals overlap to share electrons - the 2nd/3rd covalent bond between two atoms - cannot rotate and maintain the bond.






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






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






36. An uncharged molecule with a single unpaitred electron in its outer ring - very unstable - exists for only about 10 seconds






37. 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






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






39. 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






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






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






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






43. Defined acids as subtsances that produced H ions in water - while bases produced OH ions. When they reacted together - H and OH neutralise to make water






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






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






46. 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






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






48. A horizontal row of elements in the periodic table






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






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