Sample First Semester Test #3


  1. _____ Lead weighs 11.34 grams per cubic centimeter. This statement represents leads a) state b) shape c) mass d) density
  2. _____ The mass of an atom in atomic mass units is determined by a) subtracting the atomic number from the atomic weight b) adding the number of protons and electrons c) adding the number of electrons and neutrons d) adding the number of protons and neutrons
  3. _____ Matter that is characterized by neither a definite shape nor a definite volume is said to be a) gaseous b) crystalline c) liquid d) solid
  4. _____ The lowest energy level which an electron can have is called the a) O shell b) L shell c) K shell d) E shell
  5. _____ Since an atom is electrically neutral, the number of electrons equals the number of a) protons minus neutrons b) neutrons c) protons d) neutrons and protons
  6. _____ One kilogram is approximately equal to a) 2.2 pounds b) 454 grams c) 1000 milliliters d) 39.37 inches
  7. _____ An agent which affects a chemical action without itself being permanently altered is a) compound b) precipitate c) a chemical change d) a catalyst
  8. _____ All of the following are chemical changes except the a) souring of milk b) rusting of iron c) solution of sugar and water d) tarnishing of silver
  9. _____ The total number of atoms of oxygen represented in the expression 3H2SO4 is a) 3 b) 7 c) 12 d) 4
  10. _____ An atom is the characteristic particle represented by a) formula b) symbol c) hydrosphere d) atmosphere
  11. _____ A gas whose atoms do not combine with each other to form diatomic molecules is a) hydrogen b) helium c) oxygen d) chlorine
  12. _____ The particle which as a mass of 0 atomic mass units and a charge of -1 a) does not exist b) is a proton c) is the neutron d) is the electron
  13. _____ An atom or group of atoms with an unbalanced electrostatic charge is a) neutral b) a radical c) an ion d) covalent
  14. _____ An atom of the element helium consists of 2 protons, 2 neutrons, and 2 electrons. Its atomic number is a) 4 b) 16 c) 2 d) 6
  15. _____ The least active of the following four elements in the Halogen Family is a) Iodine b) Fluorine c) Bromine d) Chlorine
  16. _____ Subtracting the number of protons from the number of electrons gives the number of a) neutrons b) neither of these c) electrons d) both of these17
  17. _____ The valence of a single atom of chlorine is a) 0 b) 1 c) 17 d) 7
  18. _____ The valence electrons of the atom are the electrons found in the a) kernel b) incomplete inner shell c) nucleus d) incomplete outer shell
  19. _____ The number of orbitals in the L shell of an atom is a) 4 b) 1 c) 3 d) 2
  20. _____ A particle containing 11 protons, 12 neutrons, and 10 electrons a) is electrically neutral b) has a charge of plus 1 c) has a charge of plus 2 d) has a charge of minus 1
  21. _____ The maximum number of electrons in the L energy number is a) 4 b) 1 c) 2 d) 8
  22. _____ The number of electrons in the atom whose atomic number is 3 and whose atomic mass is 7 is a) 10 b) 7 c) 3 d) 4
  23. _____ A lithium atom has an atomic number of 3 and a mass of 7 atomic mass units. The number of electrons which it has in the L shell is a) 4 b) 3 c) 1 d) 10
  24. _____ The atom which has an outermost shell containing two electron pairs has the atomic number of a) 10 b) 7 c) 3 d) 14
  25. _____ Subtracting the atomic number from the atomic mass of a given atom gives the number of a) protons b) protons plus neutrons c) electrons d) neutrons
  26. _____ The number of neutrons in an atom whose atomic number is 4 and whose atomic mass is 9 is a) 4 b) 13 c) 9 d) 5
  27. _____ Fluorine has an atomic number of 9 and an atomic mass of 19. The number of L electrons in this atom is a) 7 b) 2 c) 9 d) 10
  28. _____ The dissolving medium in a solution is the a) solute b) suspension c) solvent d) precipitate
  29. _____ To change centigrade temperature to kelvin temperature a) add 273 b) add 373 c) subtract 100 d) subtract 273
  30. _____ The names of compounds consisting of oxygen and (usually) one other element end in the suffix a) -ite b) - ate c) -ide d) -ous
  31. _____ Aluminum bromide has the formula AlBr3. The oxidation number of aluminum is a) 1 b) 2 c) 3 d) 4
  32. _____ The correct formula for magnesium hydroxide is a) MgOH b) Mg OH2 c) Mg2OH d) Mg(OH)2
  33. _____ The sodium atom contains 11 protons, 12 neutrons, and 11 electrons. The sodium ion consists of a) 12 protons, 11 neutrons and 11 electrons b) 11 protons, 12 neutrons and 12 electrons c) 12 protons, 12 neutrons and 11 electrons d) 11 protons, 12 neutrons and 10 electrons

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