Practice Quiz

SAT II Chemistry Exam Prep - Question List

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41.
According to the kinetic molecular theory, which of the following happens to the molecules of a gas when the gas is compressed?
  1. The average distance between the molecules decreases.
  2. The electrostatic repulsion between molecules decreases.
  3. The atomic radii of the atoms in the molecules decrease.
  4. The lengths of the bonds within the molecules decrease.
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42.
An atom with 6 protons, 6 neutrons, and 6 electrons gains an additional electron. What is the resulting charge of the atom?
  1. 7
  2. 1
  3. +1
  4. +7
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43.
Given that the half-life of strontium-90 is 28.8 years, what mass of a 50.0 g sample of strontium-90 will remain after 144 years?
  1. 25.0 g
  2. 6.25 g
  3. 1.56 g
  4. 0.391 g
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44.
As atomic number increases in a group of the periodic table, which of the following atomic properties decreases?
  1. Electronegativity
  2. Metallic character
  3. Atomic mass
  4. Atomic radius
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45.
Which of the following elements has an atomic radius closest to but smaller than that of sulfur?
  1. Selenium
  2. Phosphorus
  3. Oxygen
  4. Chlorine
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