TEST REVIEW – Chapters 4 & 5

Chapter 4

5.  See explanation on pp. 119-121.

11. See explanation on pp. 127-128.

15.  See explanation on pp. 132-133.

29.  c

30.  b

Chapter 5

7.  radio, infrared, visible (ROYGBIV), ultraviolet, x-ray, gamma rays

    same for lowest-to-highest frequency

    reverse for shortest-to-longest wavelength

29.  c

30.  a

32.  a

33.  c

34.  a

41.          (a) Atomic number 26, Atomic mass 56, 26 electrons

                (b)  Atoms 2 & 3 are isotopes of the same element (because they have the same atomic number, but different atomic masses).

                (c) Ionize the atom 5 times to create O⁺⁵.  It then has 3 electrons remaining.

42.          (a) Atomic number 9, atomic mass 19.  If you added a proton, it would no longer be fluorine (it would be neon).  If you added a neutron it would still be fluorine.

                (b) 79 protons, 118 neutrons.  79 electrons.  If triply ionized, 76 electrons.

                (c) ²³⁸U has 146 neutrons.  ²³⁵U has 143 neutrons.