Practice Quiz

FCAT Grade 8 Science Assessment Practice Questions - Question List

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56. The residence time of a pollutant in the atmosphere is best defined as:
  1. The concentration of pollutant.
  2. The amount of time the pollutant stays in the air.
  3. The circulation of the pollutant to different regions.
  4. The time it takes for a pollutant to be produced.
  5. The ability of a pollutant to attach to an object.
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57. Which of the following metals is not an element?
  1. Copper
  2. Iron
  3. Germanium
  4. Steel
  5. Titanium
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58. Which of the following actions does not involve work being done on an object?
  1. A person lifting a suitcase.
  2. A soccer ball flying through the air.
  3. A forklift moving a stack of boxes.
  4. A person running.
  5. A person pushing on a gas pedal.
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59. Water, and many other molecules, exhibit a type of bond called hydrogen bonding. Hydrogen bonding is caused by:
  1. A covalent interaction between two molecules.
  2. A bond between two hydrogen atoms.
  3. An attractive interaction between two polar molecules.
  4. A gravitational interaction between molecules with large nuclei.
  5. A bond formed between a carbon and a hydrogen.
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60. Alexi is performing a chemical reaction in a solution of water, seen below:
MgCl2(aq) + PbSO4(aq) <-> MgSO4(aq) + PbCl2(s)
Alexi finds that PbCl2, lead chloride, is not soluble in water, and that the equation above is written incorrectly. Why is the equation not correct?
  1. The reaction is not reversible.
  2. One of the products should be Mg2SO4.
  3. Lead chloride should be aqueous in solution.
  4. Magnesium chloride and lead sulfate are both solids.
  5. The equation is actually correct.
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