What are Isotopes?

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					       What are Isotopes?
a) Atoms that consist of the same amount
of protons and neutrons in a nucleus
b) Atoms that contain more protons than
electrons
c) Atoms of the same element with
different numbers of electrons
d) None of the above
 Describe the Empirical formula.

a) Relative amounts of each element of
  each element in a compound.
b) Shows all types of electromagnetic
  radiation.
c) The minimum quantity of energy that can
  be gained or lost by an atom.
d) Lowest whole number ratio of the atoms
  of an element in a compound.
The energy required to remove an
electron from an atom is the atoms

a) ionization level
b) electronegativity
c) atomic number
d) atomic Mass
   The formation of a ______________ by
   the loss of one or more electrons
   always leads to a decrease in atomic
   radius because the removal of the
   highest-energy-level electrons results in
   a smaller electron cloud.
a) Anion
b) Gas
c) Cation
d) Liquid
    ____________ involves the
       sharing of electron pairs
         between two atoms
a) Ionic bonding
b) Electronegativity
c) Molar mass
d) Covalent bonding
   What’s the equation to find the
         energy of a photon?
a) E = h/v
b) E = hv
c) E = h+v
d) E = cv
 What’s the empirical formula for a
      compound that is 3.7% H,
       44.4% C and 51.9% N?
a) HCN
b) NCH
c) CHN
d) NHC
Organize the following elements in order of
         ascending atomic radii:
Beryllium, Nitrogen, Carbon, and Fluorine


a.) Be, N, C, F
b.) N, F, C, Be
c.) F, N, C, Be
d.) Be, C, N, F
A sample of Cupric Chloride (CuCl2) weighs 117.6455
grams. how many molecules are in this sample?
(atomic mass of Cu=63.546 Cl=35.453)


a.) 5.2675 x 1023
b.) 3.01x 1023
c.) 7.15 x1023
d.) 2.25 x 1023
  What is the correct name for the
      following compound ?
               PbO3

a) Lead Dioxide
b) Oxide Lead
c) Lead Oxate
d) Lead Trioxide
e) Lead Oxygen
What is the energy of a photon with
    a frequency of 5.00 nm?

a)   298.4 kJ
b)   2394 kJ
c)   239 K
d)   239.4 kJ
  What does VSEPR help you do?
a) Tells you the amount of electrons in the
    element or compound
b) Useful for explaining the shapes of
    molecules
c) Helps you determine oxidation state
d) Helps you determine Lewis Dot
    Structures
 The Electronegativity difference is
    0.5 what type of bond is it?
a) Ionic Bond
b) Polar-covalent Bond
c) Non-polar covalent bond
d) Trick question there is no bond
 What happens in a decomposition
           reaction?
a) Single compound undergoes a reaction to
  produce two or more similar substances
b) One element replaces a similar element
  in the compound
c) Substances combine with oxygen,
  releasing a large amount of energy in the
  form of light and heat
d) Absolutely nothing
 For metals in an activity series the
               greater
a) Ability to lose elections
b) ease to gain
c) No Reaction
d) None of the above
 How man valence electrons does
  Nitrogen have? and what is its
         oxidation state?
a) 5, 2-
b) 4, 4-
c) 5, 3-
d) 4, 3-

				
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