W1:Day 1: Elephant toothpaste
π₯ Action Challenge: The Power of Chemistry!
- Peroxide
- Dish soap
- Yeast
- Coveralls
- Warm-hot water
- Water bottles or others.
π½οΈ Step 1: Introduction Video (3-5 min)
π₯ Title: Chemistry in Action β The Science Behind Explosions! [1]
π Contents:
- What is a Chemical Reaction? (Simple explanation: Atoms rearrange to make new substances!)
- How Chemistry Powers Everyday Life:
- Soap cleans grease β¨
- Batteries create electricity β‘
- Baking soda makes cakes rise π°
- The Foam Frenzy Reaction! (Preview of ingredients and a quick teaser of the reaction!) [2]
π‘ Engaging Hook:
- Show a fast-motion clip of foam erupting.
- Ask: Can you figure out why this happens?
- Get ready to compete in the ultimate chemistry challenge!
π‘ Step 2: Socratic A/B Discussion (5-7 min)
π€ Before the challenge, letβs think like scientists!
- A/B Question 1: How Do We Make It Better?
- A: The reaction is already set; we canβt control much.
- B: We can change things like temperature, mixing speed, or ratios to get a better reaction!
- Follow-up: Which one do you agree with? Why?
- A/B Question 2: Should We Prioritize Size or Speed?
- A: A bigger foam explosion is best.
- B: A faster eruption is better.
- Follow-up: Which would make the reaction more exciting?
- A/B Question 3: Why Does Dish Soap Matter?
- A: It helps break down the yeast.
- B: It traps gas and makes bubbles.
- Follow-up: What happens if we leave it out?
π Key Takeaway: Every part of the reaction has a purpose! Now, letβs test it out!
π§ͺ Step 3: Foam Frenzy Challenge!
π Mission:
Harness the power of chemistry to create the most spectacular foam eruption!
π― Challenge Rules:
β Identical materials for each team:
- Hydrogen peroxide (fuel for reaction)
- Yeast (catalyst)
- Dish soap (bubble trap)
- Food coloring (color boost)
π Goal: Create the biggest, fastest, and most colorful foam explosion!
π You have 5 minutes to prepare, mix, and react!
π Scoring Criteria:
1οΈβ£ Biggest Foam Explosion β Height and volume!
2οΈβ£ Most Vibrant Color β Bold, creative, and eye-catching!
3οΈβ£ Fastest Reaction β How quickly does it erupt?
π‘ Bonus Challenges (Optional):
π₯ Color Code: Teams must match an assigned color!
β±οΈ Timed Reaction: Eruption must happen within a set time frame!
π§ Step 4: Acton Mindset β Iterate & Improve!
π Reflection Questions:
- What worked best in your reaction?
- What would you change if you did it again?
- How does this reaction compare to real-world chemistry, like baking or cleaning?
π‘ Final Thought: Science is about testing, adjusting, and learningβjust like this challenge!
π Ready? Let the Foam Frenzy begin! ππ₯
Basic Recipe Ingredients:
- Β½ cup (120 mL) hydrogen peroxide (HβOβ) β 6% or 12% (Higher concentrations create bigger reactions.)
- 1 packet (or 1 tbsp) dry yeast
- 3 tbsp warm water (activates the yeast)
- A few drops of dish soap (helps trap oxygen in bubbles)
- Food coloring (for a colorful foam eruption)
- A tall container (like a soda bottle or beaker)
Instructions:
- Prepare the Yeast Catalyst
- In a small cup, mix 1 tbsp yeast with 3 tbsp warm water.
- Stir well and let it sit for about 1 minute to activate.
- Set Up the Reaction
- In the tall container, pour Β½ cup hydrogen peroxide.
- Add a few drops of dish soap and swirl to mix.
- (Optional) Add food coloring to make it more vibrant.
- Start the Reaction! π
- Quickly pour the yeast mixture into the hydrogen peroxide.
- Step back and watch the foamy eruption!
How It Works:
- Hydrogen peroxide naturally breaks down into water and oxygen.
- Yeast contains catalase, an enzyme that speeds up this reaction.
- The oxygen gets trapped in soap bubbles, creating the expanding foam!
=In journey tracker:
- Report your best recipe
- Upload a picture of your explosion
- Explain what the bubbles are made of. How did you test it?
- Why can you flush the foam down the sink?=
Jeopardy
- What is a chemical reaction?
- What does the term βcatalystβ mean?
- What is hydrogen peroxide used for in the foam experiment?
- What happens to hydrogen peroxide when it breaks down?
- What is the role of yeast in the foam eruption?
- Why do we use dish soap in the foam reaction?
- What is a catalyst in the foam explosion experiment?
- What happens when yeast breaks down hydrogen peroxide?
- What causes the foam to rise rapidly in the experiment?
- Why do we use warm water to activate the yeast?
Real-World Chemistry Applications:
- How does soap clean grease?
- How do batteries generate electricity?
- What causes baking soda to make cakes rise?
- What common household product can break down hydrogen peroxide?
- Why do people use hydrogen peroxide as a disinfectant?
- What is the purpose of using food coloring in the foam eruption?
- How does heat affect the speed of a chemical reaction?
- What happens to a reaction if you add more yeast?
- What would happen if you used cold water instead of warm water?
- Can you use any type of soap for the foam experiment?
Science Fun Facts:
- What is the chemical symbol for hydrogen peroxide?
- What gas is released in the foam eruption?
- Which is more reactive: hydrogen peroxide or water?
- Can yeast be used for other chemical reactions, like baking bread?
- What is foam made of?
- What causes the bubbles in the foam?
- Why is the reaction faster when the temperature is higher?
- What happens if you add too much yeast to the reaction?
- What is the main difference between a physical change and a chemical change?
- What does βexothermicβ mean when describing a reaction?