Law of Conservation of Mass: 8th Grade Science Lesson Plan by Angelia Long _ Staff - RolesvilleMS

Main Objective

along210 — 2024-09-15 11:46:37 UTC

By the end of this lesson, students will be able to explain and demonstrate the Law of Conservation of Mass in chemical reactions.

Supporting Objectives

along210 — 2024-09-15 11:46:37 UTC

I can:
1. Define the Law of Conservation of Mass
2. Identify examples of mass conservation in everyday life
3. Analyze data to support the law

Essential Question

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How does mass behave during chemical reactions?

Introduction

along210 — 2024-09-15 11:46:37 UTC

Begin with a simple demonstration: Mix baking soda and vinegar in a sealed plastic bag. Weigh before and after the reaction. Discuss observations.

Direct Instruction

along210 — 2024-09-15 11:46:38 UTC

Explain the Law of Conservation of Mass: In a closed system, the total mass of substances does not change during a chemical reaction.

Remediation Activity

along210 — 2024-09-15 11:46:39 UTC

Watch this video!

Formative Assessment: Exit Tickets

along210 — 2024-09-15 11:46:39 UTC

1. Define the Law of Conservation of Mass in your own words.
2. Explain why the mass stayed the same in our experiments.
3. Predict what would happen if we opened the container during a reaction.

Check for Understanging: Quiz

along210 — 2024-09-15 11:46:40 UTC

End-of-lesson quiz covering:
- Definition of the Law of Conservation of Mass
- Examples of mass conservation
- Interpreting experimental data
- Balancing simple chemical equations

Group Discussion

along210 — 2024-09-15 11:46:40 UTC

In small groups, students discuss:
1. What was the most surprising thing you learned today?
2. How does the Law of Conservation of Mass relate to our everyday lives?
3. What questions do you still have about mass conservation?

Individual Reflection

along210 — 2024-09-15 11:46:40 UTC

Students complete a 3-2-1 reflection on Padlet:
3 things they learned
2 things they found interesting
1 question they still have

Online Simulation

along210 — 2024-09-15 11:46:42 UTC

Complete the PhET simulation 'Balancing Chemical Equations' and screenshot your results. Go to the Game

Real-World Application

along210 — 2024-09-15 11:46:42 UTC

Find and photograph 3 examples of chemical reactions in your home or neighborhood. Explain how the Law of Conservation of Mass applies to each.

Creative Project

along210 — 2024-09-15 11:46:42 UTC

Create a comic strip or infographic explaining the Law of Conservation of Mass to a younger student.

Create a TED Talk

along210 — 2024-09-15 12:08:42 UTC

Create a TED Talk that explains the Law of Conservation of Mass to 6th graders. Include visuals that show the Law of Conservation of Mass in our daily lives.

Essential Vocabulary

along210 — 2024-09-15 12:09:39 UTC

Law of Conservation of Mass - The amount of matter does not change during a chemical reaction, only that the atoms are rearranged to form new substances. This is evidenced in a balanced chemical equation.

mass - The amount of matter in an object.

reactants - The starting materials that participate in a chemical reaction. Reactants are always written on the left side of a chemical equation

products - The new substances formed due to that reaction. Products are always written on the right side of a chemical equation

chemical reaction - A process in which one or more substances, also called reactants, are converted to one or more different substances, known as products.

open system - A container where matter (like chemicals) and energy (like heat) can freely enter and leave the system.

closed system - A container where no matter can enter or leave, but energy can still be transferred in or out of the system.

conserved - The amount of a substance (like mass) remains the same during a chemical reaction

transformed - A chemical process that changes the composition, state, or organization of matter.

balanced chemical equation - the number of atoms of each element on the reactant side of a chemical reaction is the same as the number of atoms of each element on the product side.

Teacher: Direct Instruction - Small Group #1

along210 — 2024-09-15 13:12:07 UTC

We will read the article and discuss the Law of Conservation of mass. After we read, we will complete the linked handout together, then you will practice with your group. Handout

Small Group #3

along210 — 2024-09-15 13:50:41 UTC

Download the handout and follow directions to complete the assignment on Ck12 Science.

Choice Board

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https://docs.google.com/presentation/d/1qzTjQp7MLJOaZcGyFdT-ye5M-BlHLRbpN4rKr5P1bC8/edit?usp=drive_link

Choose 2 topics from the board to complete.

Small Group #2

along210 — 2024-09-15 15:41:50 UTC

Make a copy of this presentation. Use headphones to listen to the videos and read the text. Respond to questions on the slides by creating a text box.

https://docs.google.com/presentation/d/1pZjhHmoeGlBG8RrI_kn1pSZ0aJz5R1wcndhwvnjUKuc/copy.

Independent Practice: Equation Balancing

along210 — 2024-09-15 16:48:06 UTC

Practice balancing chemical equations using this interactive online tool. Start with simple equations and progress to more complex ones.