Study Guide for PS-B #1
Name:____________________________________________________________________ per_____
Be able to define:
 Ion Isotope Covalent Bond
1.


Ionic BondMetallic Bond-
An atom has 8 protons and 10 electrons. Write the chemical symbol for this ion. Be sure to indicate the
proper charge.
2. Why are Lewis Dot structures more useful than Bohr models when predicting bonding?
3. Predict the ion that will form for each of the following. Draw the lewis dot structure to help you.
a. Fluorine
b. Oxygen
c. Magnesium
4. How many atoms of each element are present in the following molecules?
a. H2O
b. CaCl2
c. C6H12O6
5.
Circle the correct words to complete the sentences.
a. A cation is formed when an atom (loses/gains) electrons to have a (positive/negative) charge.
b. When an atom gains electrons, it gets more (positive/negative).
c. When an atoms gains electrons, it becomes an (ion/isotope).
:
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6. State the octet rule. Why does it not apply to Helium?
7. How many protons, neutrons and electrons are in the following:
a. C-14
p=_____
n=______
e=______
b. C-12
p=_____
n=_______
e=______
c. O 2-
p=_____
n=_______
e=______
8. What is the “rule of thumb” when determining if atoms will form an ionic or covalent bond?
9. What kind of bond will form for each of the following compounds:
Metals/Nonmetals
Electronegativity diff
Molecule
Type of bond
(ionic, metallic, nonpolar covalent, or
polar covalent)
HCl
Cu2
MgO
NO2
H2O
CaCl2
NaCl
O2
2
Determine whether the following molecules will have ionic or covalent bonds, draw the appropriate Lewis
structure, and name the compound (or write the formula)
1.
CH4
Ionic or Covalent
Lewis
Chemical name:
2.
Sodium Oxide
Ionic or Covalent
Lewis
Chemical Formula:
3. Phosphorus Trichloride
Ionic or Covalent
Lewis
Chemical formula:
3
4.
BaCl2
Ionic or Covalent
Lewis
Chemical name:
Name the following compounds:
1. P2O5
2. SrO
3. SiF4
4. CO
5. KCl
Write the following formulas:
1.
Magnesium Oxide
2.
Carbon dioxide
3. Dinitrogen trioxide
4. Francium Sulfide
5. Barium Iodide
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