Subject: Chemistry
Timeframe Needed for Completion: 5 days
Grade Level/Course: 10-12
Unit Title: Collision Theory and Chemical Equilibrium
Grading Period: 3rd six weeks
Big Idea/Theme: Understanding how effective collisions encourage chemical reactions and how pressure, temperature and concentration
affects the progression of equilibrium in a reversible reaction
Learning Targets: (“I can” or “I will” statements)
I will understand the factors that affect the rate of reactions
I will be able to define catalyst and understand their role in the rate of chemical reactions.
I will be able to interpret information from graphs that represent catalyzed and uncatalyzed endergonic and exergonic reactions.
I can distinguish between a reversible reaction at equilibrium and one that is not at equilibrium.
I can determine the direction a reaction will proceed in order to reach equilibrium.
Essential Questions: (3-5 questions per unit) – This is not a yes or
no question; it must be broad, debatable, and thought-provoking.
Curriculum Goals/Objectives: (Common Core or Essential
Standards)
Do you think Fritz Haber should have been awarded a Nobel Prize in
Chemistry for his contributions to the field? Explain your answer.
If you could create a catalyst to speed up any chemical reaction, which
reaction would it be and describe the shape of your catalyst.
Chem 2.2.1Explain the energy content of chemical reactions.
Chem 3.1.1 Explain the factors that affect the rate of a reaction
Chem 3.1.2 Explain the conditions of a system at equkibrium
Chem 3.1.3 Infer the shift in equilibrium when a stress is applied to
a system.
Essential Concepts:
Assessment Tasks: (examples of summative and/or formative
assessments)
1-Identifying factors that affect rate ( temperature, concentration,
particle size and the presence of a catalyst)
2-Use an energy graph to determine the following for a forward and
reverse catalyzed and uncatalyzed reaction - ∆H, activation energy,
potential energy of the products and reactants
3- Understand the concept of chemical equilibrium and calculate
equilibrium values using keq.
4- Compare keq and Q values to determine the direction a reaction
will proceed if it is not at equilibrium.
Graphs of reactions both catalyzed and uncatalyzed
Worksheets
Quizzes
Tests
Red, green, yellow cards
Thinking maps
Project on Haber processing plants and their importance to the
world economy
Two 15 minute videos on chemical kinetics and catalysts
Readings from Current Science
Other Integration Opportunities: (literacy anchor standards,
Information and Technology Essential Standards, 21st century
content and skills, other disciplines)
Literacy
Determine central idea or conclusions of a text
Follow precisely a complex, multistep procedure when carrying out
experiments.
Determine the meaning of symbols and key terms.
Write informative/explanatory texts.
ITES
Evaluate resources for reliability.
Evaluate content for relevance to the assigned task.
Analyze ethical issues and practices related to copyright, not
plagiarizing, and netiquette.
21st Century Skills
Students can determine the verifiability of evidence in print and
electronic resources to evaluate scientific claims.
Students can provide of examples of how scientists use technology to
expand their research.
Students apply their scientific knowledge to a variety of situations.
Students have a variety of opportunities to read/review and interpret
scientific information through popular and professional media in areas
that interest them, and are able to discuss their thoughts and questions
on these topics informally with peers.
Resources:
Worksheets and paper handouts
30% peroxide
manganese dioxide
videos
Current Science magazine