AP Chemistry Exam Questions With
Correct Answers
What is a solution? - CORRECT ANSWER✔✔-A homogeneous mixture made up of
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two or more substances that do not chemically combine; instead, the substances
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mix uniformly in the solution.
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What is a solvent? - CORRECT ANSWER✔✔-The substance present in the largest
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quantity by volume, usually water.
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What is a solute? - CORRECT ANSWER✔✔-The substance that is dissolved in the
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solvent.
How do you find the empirical formula of a compound? - CORRECT ANSWER✔✔-
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First, determine mol by dividing the percent comp or mass of elements by their
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molar mass, then divide the mol values by the smallest mol value.
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How do you find the molecular formula of a compound? - CORRECT ANSWER✔✔-
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First, determine the mass of the empirical formula, then divide the mass of the
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molecular formula by the mass of the empirical and finally multiply the empirical
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formula by the ratio obtained between the masses.
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What is the equation to find percent yield? - CORRECT ANSWER✔✔-(laboratory
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yield/theoretical yield) * 100 = percent yield | | | | | |
, What is the equation to find percent error? - CORRECT ANSWER✔✔-(|lab value-
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accepted value|/accepted value) * 100 = percent error
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What is the full electron configuration of Sulfur (S)? - CORRECT ANSWER✔✔-
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1s²2s²2p⁶3s²3p⁴
What is the compound name for iron (III) hydride? - CORRECT ANSWER✔✔-FeH₃
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What does NH₄OH dissociate into? - CORRECT ANSWER✔✔-NH₄⁺ and OH⁻
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List the seven strong acids. - CORRECT ANSWER✔✔-Hydrochloric acid (HCl),
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Hydrobromic acid (HBr), Hydroiodic acid (HI), Nitric acid (HNO₃), perchloric acid
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(HClO₄), chloric acid (HClO₃), sulfuric acid (H₂SO₄)
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List the six strong bases. - CORRECT ANSWER✔✔-Sodium hydroxide (NaOH),
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Lithium hydroxide (LiOH), Potassium hydroxide (KOH), Calcium hydroxide
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(Ca(OH)₂), Strontium hydroxide (Sr(OH)₂), Barium hydroxide (Ba(OH)₂)
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Are compounds of Group 1 metals soluble or insoluble? - CORRECT ANSWER✔✔-
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Soluble
Are common ammonium ions soluble or insoluble? - CORRECT ANSWER✔✔-
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Soluble
Are common nitrates soluble or insoluble? - CORRECT ANSWER✔✔-Soluble
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Correct Answers
What is a solution? - CORRECT ANSWER✔✔-A homogeneous mixture made up of
| | | | | | | | | | | |
two or more substances that do not chemically combine; instead, the substances
| | | | | | | | | | | |
mix uniformly in the solution.
| | | |
What is a solvent? - CORRECT ANSWER✔✔-The substance present in the largest
| | | | | | | | | | | |
quantity by volume, usually water.
| | | |
What is a solute? - CORRECT ANSWER✔✔-The substance that is dissolved in the
| | | | | | | | | | | | |
solvent.
How do you find the empirical formula of a compound? - CORRECT ANSWER✔✔-
| | | | | | | | | | | |
First, determine mol by dividing the percent comp or mass of elements by their
| | | | | | | | | | | | | |
molar mass, then divide the mol values by the smallest mol value.
| | | | | | | | | | |
How do you find the molecular formula of a compound? - CORRECT ANSWER✔✔-
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First, determine the mass of the empirical formula, then divide the mass of the
| | | | | | | | | | | | | |
molecular formula by the mass of the empirical and finally multiply the empirical
| | | | | | | | | | | | |
formula by the ratio obtained between the masses.
| | | | | | |
What is the equation to find percent yield? - CORRECT ANSWER✔✔-(laboratory
| | | | | | | | | | |
yield/theoretical yield) * 100 = percent yield | | | | | |
, What is the equation to find percent error? - CORRECT ANSWER✔✔-(|lab value-
| | | | | | | | | | |
accepted value|/accepted value) * 100 = percent error
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What is the full electron configuration of Sulfur (S)? - CORRECT ANSWER✔✔-
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1s²2s²2p⁶3s²3p⁴
What is the compound name for iron (III) hydride? - CORRECT ANSWER✔✔-FeH₃
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What does NH₄OH dissociate into? - CORRECT ANSWER✔✔-NH₄⁺ and OH⁻
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List the seven strong acids. - CORRECT ANSWER✔✔-Hydrochloric acid (HCl),
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Hydrobromic acid (HBr), Hydroiodic acid (HI), Nitric acid (HNO₃), perchloric acid
| | | | | | | | | | |
(HClO₄), chloric acid (HClO₃), sulfuric acid (H₂SO₄)
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List the six strong bases. - CORRECT ANSWER✔✔-Sodium hydroxide (NaOH),
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Lithium hydroxide (LiOH), Potassium hydroxide (KOH), Calcium hydroxide
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(Ca(OH)₂), Strontium hydroxide (Sr(OH)₂), Barium hydroxide (Ba(OH)₂)
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Are compounds of Group 1 metals soluble or insoluble? - CORRECT ANSWER✔✔-
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Soluble
Are common ammonium ions soluble or insoluble? - CORRECT ANSWER✔✔-
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Soluble
Are common nitrates soluble or insoluble? - CORRECT ANSWER✔✔-Soluble
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