Learning Gig Resources
Introduction to Chemical Reactions
This reading introduces 8th-grade students to chemical reactions by defining reactants and products and using relatable examples from everyday life, like cooking or burning wood. It explains how atoms rearrange to form new substances, highlighting the conservation of mass.
Understanding the Law of Conservation of Mass
This reading explains the Law of Conservation of Mass for 8th-grade students, focusing on how matter is neither created nor destroyed. Real-life analogies and examples with closed systems, such as sealed containers in labs, help clarify this important scientific principle.
Balancing Chemical Equations
This reading teaches 8th-grade students how to balance simple chemical equations with step-by-step examples. It explains why balanced equations are necessary to show conservation of mass and connects this concept to real-world applications.
Real-World Applications of Chemical Reactions
This reading explores how 8th-grade students encounter chemical reactions and conservation of mass principles in real life, with examples including combustion engines, photosynthesis, and rust formation.
Project Work (Recommended)
Real-World Reaction Case Study
Students will select a real-world example of a chemical reaction, such as combustion, rusting, or photosynthesis, and research how it illustrates the law of conservation of mass. They will present their findings using visuals or models.
Groups of 2-3 students
Balancing Equations Relay
In this collaborative relay game, students work in teams to balance a series of chemical equations as quickly and accurately as possible, building teamwork skills and reinforcing their understanding of balanced chemical equations.
Teams of 3-5 studentsChemical Reactions and Conservation of Mass
Slides on chemical reactions, conservation of mass, and balancing equations.
Chemical Reaction
Chemical Reaction
A process where reactants transform into products with new properties.
Reactants
Reactants
Substances that start a chemical reaction.
Products
Products
New substances created by a chemical reaction.
Law of Conservation of Mass
Law of Conservation of Mass
Matter cannot be created or destroyed in a chemical reaction.
Synthesis Reaction
Synthesis Reaction
Two or more substances combine to form a single product.
Decomposition Reaction
Decomposition Reaction
A single substance breaks down into two or more products.
Combustion Reaction
Combustion Reaction
A reaction where a substance reacts with oxygen, releasing heat and light.
Replacement Reaction
Replacement Reaction
A reaction where one element replaces another in a compound.
Closed System
Closed System
A setup where no mass escapes, often used to observe conservation of mass.
Balancing Chemical Equations
Balancing Chemical Equations
Adjusting coefficients to keep atom counts equal on both sides of the equation.
Why Balance Equations?
Why Balance Equations?
To ensure mass conservation, showing no atoms are lost or gained.
Combustion of Methane
Combustion of Methane
CH₄ + 2O₂ → CO₂ + 2H₂O, an example of a combustion reaction.
Photosynthesis
Photosynthesis
Plants convert CO₂ and H₂O into glucose and O₂ using sunlight.
Rusting
Rusting
A slow reaction of iron with oxygen and water, forming rust.
Cellular Respiration
Cellular Respiration
Cells convert glucose and oxygen into energy, CO₂, and H₂O.
Pollution Control
Pollution Control
Using chemical reactions to transform pollutants into safer substances.
Haber-Bosch Process
Haber-Bosch Process
A method of synthesizing ammonia from nitrogen and hydrogen.
Practical Application of Conservation of Mass
Practical Application of Conservation of Mass
It aids in designing efficient processes in fields like manufacturing and healthcare.
Chemical Reactions and Conservation of Mass Study Guide
This guide is designed to help you focus on key concepts for understanding chemical reactions, the Law of Conservation of Mass, and balancing equations. By reviewing the topics below, you should be well-prepared for your assessment on chemical reactions and mass conservation.
Session Schedule
Learning Gigs are self-paced and this schedule is only an aid for a classroom setting.- Read: Introduction to Chemical Reactions to familiarize students with concepts like reactants, products, and everyday examples.
- Watch introductory video: The Law of Conservation of Mass to introduce conservation principles.
- Read: Understanding the Law of Conservation of Mass to deepen understanding of mass conservation with real-life analogies.
- Review slideshow: Chemical Reactions and Conservation of Mass slides, discussing each slide to introduce terminology and foundational principles.
- Project Overview: Discuss general project requirements; allow students to begin discussing ideas and forming groups if necessary.
- Independent Learning: Students review project materials and explore introductory readings to prepare for upcoming project work.
- Read: Balancing Chemical Equations to build comprehension of balancing equations in relation to the conservation of mass.
- Watch video: Chemical Equation Basics as a class to reinforce understanding of chemical equations’ structure and purpose.
- Review slideshow: Go over key slides from Chemical Reactions and Conservation of Mass, focusing on various types of reactions.
- Project Work: Begin initial stages of both required projects. Students should split time between gathering information and starting early project tasks as needed.
- Independent Learning: Review notes, readings, and relevant materials to enhance understanding outside of class.
- Read: Balancing Chemical Equations (review as needed) to reinforce understanding and application in real-life contexts.
- Video Review: Optionally, re-watch The Law of Conservation of Mass video to reinforce the concept.
- Read: Real-World Applications of Chemical Reactions to connect theoretical concepts to practical applications, including combustion, photosynthesis, and pollution control.
- Review slideshow: Final review of Chemical Reactions and Conservation of Mass slides, emphasizing equation balancing and real-life examples.
- Project Work: Continue advancing project work. Teams should focus on finalizing information, examples, or visuals for their projects.
- Independent Learning: Students should individually review the study guide and finalize project preparations as necessary.
- Assessment: Students complete a formal assessment on lesson concepts.
- Project Presentations: Each group presents its project findings to the class, demonstrating understanding of the concepts discussed throughout the sessions.
- Reflection: Wrap up with a discussion on the real-world importance of chemical reactions and conservation of mass in various fields.
Session: 1
Introduce students to core concepts, review materials, and start initial project planning.
Session: 2
Engage with chemical equations and dive deeper into lesson content, ensuring reinforcement of concepts through videos, reading, and project work.
Session: 3
Continue in-depth project work and review additional concepts with a focus on consolidation before assessment and presentations.
Session: 4
Wrap up the lesson with assessments and final project presentations.
This Learning Gig development generously funded by Outstanda.