Transcript Semester I Review

Semester I Review
Semester I Review
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How many sig-figs are found in each
number?
 0.345
 3005
 300
 3.002
 0.00023
Semester I Review
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Round each number to three sig-figs.
 45678
 0.002894
 23.76
 100.5
 56.799
Semester I Review
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Which of the following is a mixture.
 Pure
water
 Clean air
 Iron (II) oxide
 Salt water
 Carbon dioxide
Semester I Review
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Which of the following is a chemical
change.
 Cutting
paper
 Boiling water
 Rusting iron
 Burning gasoline
Complete the table using the given
numbers
Symbol
Mass #
X - ___
Atomic #
Protons
10
Electrons
15
Y - 35
Z - ___
Neutrons
14
56
25
Semester I Review
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Calculate the average atomic mass given
the following data: element Y has three
isotopes 35.0% = 23.5 amu, 55.0% = 25.0
amu and 10.0% = 26.0 amu.
Semester I Review
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25.0 grams of a given metal displaces
44.2 mL of water; what is the density of the
metal?
Semester I Review
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What did each scientist contribute to the
development of the modern atom.
 Dalton
 Thomson
 Rutherford
 Milliken
Determine if the data below is
accurate, precise, both, or neither
Trial #
Measurement
1
34.56
2
34.45
3
34.78
True Value = 34.50
Calculate the percent error using the
average of the measurements.
Semester I Review
1.
2.
3.
The splitting of a nucleus is known as
________.
The combining of two small nuclei to
form a larger one is known as
__________.
Give the formula of an alpha particle and
beta particle.
Semester I Review
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Decay of polonium-218 by alpha ()
emission.
2.
Decay of carbon – 14 by beta emission
3.
Decay of Thorium - 232 by an electron
capture
Semester I Review
1. The half-life of phosphorous-30 is 2.5
min. If you start with 55 g of
phosphorus-30, how many grams would
remain after 27.5 min?
Semester I Review
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A radioactive isotope decayed from 200.0
grams to 3.125 grams in 15 years.
Determine the half-life of the isotope.
Semester I Review
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Calculate the wavelength of
electromagnetic radiation with a frequency
of 6.5x1016 Hz.
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Calculate the energy of the above
electromagnetic radiation.
Semester I Review
If n=4; how many sublevels, Orbitals, and
Electrons are present?
 T or F (p) sublevels have 7 orbitals
 T or F (d) sublevels hold 6 electrons
 T or F (s) sublevels hold 2 electrons
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Semester I Review
For the element Cobalt; give the:
 Long hand electron configuration
 Box and arrow notation
 Noble gas configuration
 Electron Dot Structure
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Semester I Review
Give the ion for each of the following
elements:
 Sodium, Oxygen, Chlorine, Barium,
Gallium, Sulfur, Nitrogen, Aluminum,
Silver, Zinc, Cadmium
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Semester I Review
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Give the formula for the following compounds
1) iron (II) arsenide
2) lead (II) sulfate
3) lead (IV) hydroxide
4) copper (II) acetate
5) beryllium chloride
6) ammonium chromate
7) silver oxide
8) potassium sulfide
Semester I Review
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Give the name of the following compounds
1) NaBr
2) Sc(OH)3
3) V2(SO4)3
4) NH4F
5) CaCO3
6) NiPO4
7) Li2SO3
8) Zn3P2
9) Sr(C2H3O2)2
10) Cu2O