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Climate Change Chemistry

Climate Change Chemistry
Contributors
Beyond Benign, Inc.
Retired K-12 Educator | Beyond Benign, Inc.
Education and Workforce Development Specalist | Science Done Sustainably
Beyond Benign, Inc.
Learning Objets
Summary
This curriculum unit is focused on exploring the scientific concepts of climate change, specifically within the field of chemistry. The unit aims to provide students with a foundational understanding of the chemistry involved in climate change models, predictions, and policy. The focus is on removing political connotations associated with the term “greenhouse gases” and restoring its scientific meaning.

To effectively teach climate change, teachers should have a strong understanding of the science behind it, as well as the historical and societal contexts surrounding the issue. They should also be equipped to address potential controversy and skepticism from students and parents, while maintaining a neutral and evidence-based approach to the topic.

This unit may also be used in conjunction with Beyond Benign’s Synthesis of Biodiesel lab: https://www.beyondbenign.org/lessons/synthesis-of-biodiesel/

Unit Overview:
Lesson 1: Examining Opinions on Climate Change
• This lesson aims to encourage open and respectful discussion of diverse perspectives on climate change.
• Through the discussion, students will have the opportunity to explore scientific information and develop informed opinions based on the available evidence.

Lesson 2: Chemistry and Climate Change
• Students model atmospheric gases and compare their movement and bond interactions to non-greenhouse gases.
• Students learn how IR radiation interacts with greenhouse gases.
• Students look at global warming potential (GWP) numbers and identify the greenhouse gases that most need to be remediated.
• Students learn about hydrofluorocarbons (HFCs) and evaluate an invention designed to make refrigeration more sustainable.

Part 3: Greenhouse Gases and Temperature
• Understand the role of atmospheric gases in affecting the Earth's atmosphere.
• Conduct experiments to test the effects that infrared light has on different atmospheric gases (O2, N2, and CO2)
• Share their data with the class and compile a class average.
• Apply the principles of green chemistry to the experiment.

Part 4: Climate Chemistry Extension: Ice Core Chemistry Project
• Students construct ice cores over time and bring them into school to share and discuss. Students write an “ice core story” that explains their ice core and how and the significance of the substances that they used to symbolize these time periods.
• Students participate in a reading exercise regarding how ice cores are used by climate scientists and answer questions based on their reading.

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Moderation state
Published
Object Type
Laboratory experiment
Audience
High School (Secondary School)
Published on
Green Chemistry Principles
Waste Prevention
NGSS Standards, if applicable
• HS-ESS2-2. Analyze geoscience data to make the claim that one change to Earth’s surface can create feedbacks that cause changes to Earth’s systems.
• HS-ESS2-4. Use a model to describe how variations in the flow of energy into and out of Earth’s systems result in changes in climate.
• HS-ESS3-4. Evaluate or refine a technological solution that reduces impacts of human activities on natural systems.
• HS-ESS3-5. Analyze geoscience data and the results from global climate models to make an evidence-based forecast of the current rate of global or regional climate change and associated future impacts to Earth systems.
• HS-ESS3-6. Use a computational representation to illustrate the relationships among Earth systems and how those relationships are being modified due to human activity.
• HS-ETS1-3. Evaluate a solution to a complex real-world problem based on prioritized criteria and tradeoffs that account for a range of constraints including cost, safety, reliability, and aesthetics as well as potential social, cultural and environmental impacts.
• HS-PS2-6. Communicate scientific and technical information about why the molecular-level structure is important in the functioning of designed materials.
Learning Goals/Student Objectives
Lesson 1 Objectives: Students will …
• Define their own stance on challenging topics.
• Actively listen to a variety of perspectives.
• Evaluate different perspectives.

Lesson 2 Learning Objectives: Students will …
• Build their own human models of atmospheric gases* Alternatively, you can have your students build molecular models from kits.
• Determine which gases are greenhouse gases based on background information on the greenhouse effect and the role of gases.
• Understand the concept of Global Warming Potential (GWP).
• Learn about man-made greenhouse gases and evaluate a technology designed to reduce the use of hydrofluorocarbon gases.

Lesson 3 Learning Objectives: Students will…
• Collect and analyze temperature data
• Consider how molecular structure connects to the properties of gases
• Understand how greenhouse gases trap thermal energy, with an emphasis on CO2

Lesson 4 Learning Objectives: Students will…
• Build an “ice core”
• Read two articles and answer questions
• Understand how carbon dioxide from ice cores is studied
• Learn how isotopic concentrations in water are used to determine past temperatures
Common pedagogies covered
Hands-on learning
Time required (if applicable)
Four 45-60 minute class periods

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Safety Precautions, Hazards, and Risk Assessment
• 6% hydrogen peroxide is more concentrated than that used for disinfection and may cause skin irritation. Gloves and safety goggles are recommended.
• In Experiment 2, students with impaired breathing should not breathe into the bag to trap CO2. Only one student should breathe into each bag.
• Instruct students to only use materials they are confident are safe. Emphasize the use of edible materials and avoid using chemical cleaners or other household chemicals.
Digital Object Identifier (DOI)
https://doi.org/10.59877/UZHD1598
Creative Commons License