Honors Chemistry Review- Chemical Reactions
Authored by Kristin Behrens
Chemistry
9th - 12th Grade
NGSS covered
Used 126+ times
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About
This honors-level chemistry quiz focuses on chemical reactions and the fundamental principles governing them, making it appropriate for grades 9-12 students in advanced chemistry courses. The assessment covers three critical areas: the Law of Conservation of Mass, chemical equation balancing, and reaction type classification. Students must demonstrate understanding that mass remains constant during chemical reactions, apply mathematical reasoning to calculate unknown masses using conservation principles, and systematically balance chemical equations by ensuring equal numbers of each type of atom on both sides. The quiz requires students to classify reactions into the major types—synthesis, decomposition, single replacement, double replacement, and combustion—based on structural patterns and reactant-product relationships. To succeed, students need strong foundational knowledge of chemical formulas, atomic theory, and the ability to recognize molecular patterns while applying mathematical problem-solving skills to quantitative chemistry problems. Created by Kristin Behrens, a Chemistry teacher in US who teaches grade 9-12. This comprehensive review quiz serves multiple instructional purposes throughout the chemical reactions unit, functioning effectively as a formative assessment tool to gauge student understanding before summative evaluations. Teachers can deploy this quiz as a warm-up activity to activate prior knowledge, assign it as targeted homework to reinforce classroom learning, or use it during review sessions to identify concepts requiring additional instruction. The varied question formats—from conceptual understanding of conservation laws to hands-on balancing practice—make it ideal for differentiated instruction and spiral review of essential chemistry concepts. This assessment aligns with Next Generation Science Standards HS-PS1-7 (conservation of atoms in chemical reactions) and supports Common Core mathematical practices through its emphasis on quantitative reasoning and pattern recognition in chemical equation manipulation.
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10 questions
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1.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
What will weigh more when a chemical change is complete? The reactants before the chemical reaction, or the product after the reaction is complete?
Tags
NGSS.HS-PS1-7
2.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
In a reaction A + B ----> C, reactant A has 5g and product C has 9g. How many grams does reactant B should have?
Tags
NGSS.HS-PS1-7
3.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Why does this picture demonstrate the Law of Conservation of Mass?
the number of atoms of each element are the same on both sides
they start out separate and end up combined
the same elements are used
it doesn't demonstrate the Law of Conservation of Mass
Tags
NGSS.HS-PS1-7
4.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
CxHy +O2 --> H2O + CO2
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-5
5.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
The following reaction is an example of what reaction type?
CoCO3 → CoO + CO2
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-5
6.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
PCl5 + ___ H2O → ___ HCl + H3PO4
4, 5
1, 6
3, 8
2,2
Tags
NGSS.HS-PS1-7
7.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Which problem is balanced?
Tags
NGSS.HS-PS1-7
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