CYPRESS COLLEGE
CHEM 101: Chemistry for Health Science Majors I
Exam # 1: Chapters 1, 2, 3 and 4 (110 Points Possible)
NAME________________________DATE___________SCORE___________
1. Distinguish between the following pairs of terms. Give an example for
each term: (20 Points)
A. Element and Compound
B. Physical Change and Chemical Change
C. Homogeneous Mixture and Heterogeneous Mixture
D. Alkali Metals and Halogens
E. Polar Bond and Nonpolar Covalent Bond
2. Convert the following numbers as asked. Show work for all problems by
dimensional analysis, with attention to significant digits, and put each
numerical answer in a box: (10 Points)
A. 85 mm into m
B. 2.5 kg into mg
C. 15 mL into liters
D. 75 degrees Fahrenheit into degrees Celsius
E. 50.5 degrees Celsius into degrees Kelvin
3. Calculate the density of a metallic substance whose mass is 58.54 g and
volume is 8.7 ml. Show work. (10 Points)
4. A. Write the Nuclear Symbol for Bromine. (5 Points)
B. Calculate the total number of subatomic particles in one atom of
Bromine. Show work. (5 Points)
5. Explain chemical bonding between Magnesium and Fluorine in
Magnesium Fluoride: (10 Points)
Magnesium
a.
b.
c.
d.
e.
f.
g.
Fluorine
Atomic Mass
Mass Number
Atomic Number
# of Protons
# of Electrons
# of Neutrons
Electron Distribution Diagram:
h. Bonding Explanation:
6. Draw the electron configuration, orbital, and electron dot notations for
the following elements: (10 Points)
A. Neon
B. Calcium
7. Draw the Lewis Structure for Silicon dioxide, SiO2 and describe and draw
its Molecular Geometry, Bond Angle, and explain whether the molecule is
Polar or Nonpolar. (10 Points)
8. Write the chemical formula for the following compounds: (10 Points)
A. Nitric Acid
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B. Aluminum Sulfate
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C. Magnesium Hydroxide ________________________
D. Cupric Oxide
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E. Carbon Monoxide
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9. Write the chemical name for the following compounds: (10 Points)
A. H2CO3
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B. P2O5
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C. Fe (NO3)3
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D. CaBr2
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E. Na OH
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