AP Chemistry Unit 4 Review NTI#5**
Authored by Chris Myers
Chemistry
12th Grade
NGSS covered
Used 562+ times
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This AP Chemistry Unit 4 review quiz focuses on stoichiometry and chemical reactions, targeting 12th-grade students enrolled in Advanced Placement Chemistry. The assessment covers essential quantitative chemistry concepts including mole-to-mole conversions using balanced chemical equations, limiting reactant identification, percent yield calculations, and mass-to-mass stoichiometric problems. Students must demonstrate mastery of chemical equation balancing, precipitation reactions, net ionic equations, and oxidation-reduction processes including oxidation number determination. The problems require students to apply dimensional analysis, understand molar relationships from coefficients in balanced equations, identify spectator ions, predict solubility patterns, and classify reaction types. Success on these questions demands strong foundational skills in molar mass calculations, stoichiometric ratios, and the ability to systematically work through multi-step quantitative problems that bridge conceptual understanding with mathematical application. Created by Chris Myers, a Chemistry teacher in the US who teaches grade 12. This comprehensive review quiz serves multiple instructional purposes in the AP Chemistry classroom, functioning effectively as a formative assessment tool to gauge student readiness before unit examinations, as targeted homework assignments for reinforcing complex stoichiometric concepts, or as warm-up activities to activate prior knowledge before advancing to new topics. The quiz design allows teachers to identify specific areas where students struggle with quantitative problem-solving and provides immediate feedback on computational skills essential for AP exam success. Teachers can assign individual sections focusing on particular concepts like limiting reactants or oxidation numbers, or use the complete assessment for comprehensive unit review. This assessment aligns with AP Chemistry Learning Objectives related to stoichiometry (LO 1.4, 1.5), chemical reactions and net ionic equations (LO 3.2, 3.8), and provides essential practice for the mathematical reasoning and problem-solving skills emphasized throughout the AP Chemistry curriculum.
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25 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
2 KClO3 → 2 KCl + 3 O2
How many moles of oxygen are produced when 6.7 moles of KClO3 decompose completely?
Tags
NGSS.HS-PS1-7
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Cl2 + 2 KBr → Br2 + 2 KCl
How many grams of potassium chloride can be produced from 356 g of chlorine and 356 g of potassium bromide?
Tags
NGSS.HS-PS1-7
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
B2H6 + 3O2 -->2 HBO2 + 2 H2O
What mass of O2 will be needed to burn 36.1 g of B2H6?
13.8 g
3.86 g
124 g
198.3 g
Tags
NGSS.HS-PS1-7
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
What is the percent yield of the following reaction if 145g of P2O5 reacts with 40 grams of water, but you only collect 112 grams of phosphoric acid?
3 H2O + P2O5 -> 2H3PO4
80%
85%
77%
58%
Tags
NGSS.HS-PS1-7
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Balance the reaction: _AlBr3 + _K2SO4 → _KBr + _Al2(SO4)3
6 AlBr3 + 1 K2SO4 → 6 KBr + 1 Al2(SO4)3
2 AlBr3 + 3 K2SO4 → 6 KBr + 1 Al2(SO4)3
1 AlBr3 + 1 K2SO4 → 2 KBr + 3 Al2(SO4)3
2 AlBr3 + 3 K2SO4 → 1 KBr + 2 Al2(SO4)3
Tags
NGSS.HS-PS1-7
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Fe + S --> FeS
If 7.62g Fe react with 8.67g S, what is the limiting reactant?
Tags
NGSS.HS-PS1-7
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
What is the limiting reactant if 10 moles of NH3 react with 30.0 moles of NO?
4NH3+ 6NO --> 5N2 + 6H2O
NH3
NO
N2
water
Tags
NGSS.HS-PS1-7
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