Do now: Read this scientific statement and discuss to find what evidence we have for this:
Do You Know? What type of force is involved with atoms bonding? What questions did we propose from last lesson? NEXT: Grab the Lesson 8 Sheets and answer question #1 -
2. Data Analysis: Compile a Noticings and Wonderings chart. Use Supplement: Electron Shells and Bond Energy. 3. Model bond length: How can we improve the models we use to incorporate the 4. Watch video demonstrations of an inverter magnet and record quantitative and qualitative data to help figure out When is this system is most stable.
5. Thought Experiments 6. Building Understandings discussion
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Do Now: GET A WHITEBOARD AND MARKER
On a whiteboard, draw a graph that represents the energy changes during an endothermic reaction. You know this...energy at start, energy breaking bonds, energy making bonds. Our last driving question: "Why do some reactions give off heat and others take heat from the surroundings?" Make a model on your whiteboard showing an endothermic reaction and exothermic reaction. Include: Atoms, bonds, energy in, energy out, chemical reaction Task:
New Driving Question: What makes some bonds stronger and some bonds weaker? Why do atoms form bonds anyway? Task 2:
Monday:
Tuesday, Apr 18: Do Now:
Task 1: Review QUESTION 1: What happens to atoms and molecules in a chemical reaction (combustion, photosynthesis, etc...)
Most students gone on field trip.
Walk to the Lake and back and contemplate the chemistry of our world. Do Now: Answer this on a whiteboard:
If a chemical reaction gives off heat, are the bonds in the reactants or the products stronger? Unit Question: Why hydrogen fuel? Task 1: Fill out our model tracker for what we figured out in Lesson 6. Then we can skip the first three questions on their sheet. Task 2: See Google Classroom for your activity sheet for Lesson 7 Why doesn’t the energy that goes IN to break bonds and that comes OUT when bonds are formed just balance out? How might we investigate this question using the simulation? Make sure you are working as part of a group of at least three people. Choose who will work on which question and take 10 minutes to simulate the three different types of reactions. SMALL GROUP MODELING / EXPLANATIONS Use what you figured out in the last 4 investigations to explain and/or model on a separate sheet why the citric acid and sodium bicarbonate reaction resulted in a drop in temperature while burning fuel (either gasoline or ethanol) resulted in an increase in temperature. MODEL GALLERY WALK Post your model/explanation, then walk around the room to look at the other group’s work. Use sticky notes to leave feedback. After returning to your table, read through your group’s feedback and reflect on what you saw. What do you need to add or change about your model? Do Now: On a whiteboard, draw the chemical equation for the combustion of methane with the correct balance of atoms on each side.
Task 1 Finish sharing the investigation results. Lesson 6: How does bonding and breaking bonds affect energy in the system?
What have we figured out so far?
Do Now: Share with a table partner - one interesting thing that happened over your Spring Break. Warm up Kahoot - What are we learning about? (See Google Classroom to access the kahoot) Lesson:
3. Open the sim at this link (tinyurl.com/BondsandEnergyNetlogo) and play with the controls.
4. What does the simulation allow us to do that the marble model of bond making and breaking doesn’t? 5. What might be some limitations of this simulation as a model of what is going on when atoms rearrange in a chemical reaction? 6. Use the Discussion Diamond protocol to decide what questions we want to answer using the simulation.
8. Each group collaboratively PLANS their investigation. Exit ticket: What is your favorite Candy? |
AuthorChris Campbell Science Practices, Core Ideas and Crosscutting ConceptsArchives
June 2023
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