Bubbling Breakthrough Slides
BUBBLING BREAKTHROUGH
Solving the Mystery of the Invisible Gas
Warm Up: Solid or Liquid?
🪨
The Rock
Does it keep its shape?
Can you hold it easily?
SOLID
💧
The Water
Does it flow?
Does it take the shape of the cup?
LIQUID
What happens if we drop the rock into the water?
Science Investigation
Let's watch what happens when we mix two things together!
Embedded media
1
Pause at 0:15 to Predict
2
Pause at 0:40 to Observe
Stop! Prediction Time
"What happens when vinegar is mixed with
bicarbonate soda (baking soda)?"
Will it freeze?
Will it bubble?
Will it change color?
Did you see the foam?
OBSERVATION
The red vinegar hit the white powder and...
BOOM!
Tiny bubbles grew into a thick pink foam.
?
Where did the bubbles come from?
?
Was the gas there before?
?
Is this a solid, liquid, or gas?
THE SCIENCE SECRET
Chemical Change
When two things mix and create something NEW. We didn't just mix them—they changed!
Evidence
The BUBBLES are clues! They prove a gas called Carbon Dioxide was made.
"Bubbling is evidence of a chemical change!"
Three States in One Beaker
SOLID
Baking Soda
Tiny white grains that keep their shape.
Liquid
Vinegar
Clear (or red!) liquid that flows and splashes.
Gas
Bubbles
Carbon Dioxide filling the bubbles and escaping!
Expert Challenge
Will anything else bubble?
What happens if we mix
Baking Soda + WATER?
❌
No Bubbles
🫧
More Bubbles
Chemical changes need specific "reactants" to work!
Bubbling Breakthrough Lab Report
BUBBLING BREAKTHROUGH
Lab Report
Scientist:
Date:
Instructions:
Draw what happened in our experiment! Use your colored pencils to show the vinegar, the baking soda, and the bubbles. Label the solid, liquid, and gas in each box.
Step 1: BEFORE MIXING
Label Here
Label Here
Step 2: MIXING
Label Here
Step 3: AFTER MIXING
Label Here
Word Bank
The Big Question:
What was the evidence that a gas was made in this experiment?
Bubbling Breakthrough Facilitation Guide
TEACHER GUIDE
Bubbling Breakthrough
Grade Level 2nd Grade
Learning Objective
Students will be able to distinguish between a solid and a liquid and observe that mixing them can create a gas as evidence of a chemical change.
Materials Needed
-
Glass of water & a rock
-
Vinegar (red dye optional)
-
Bicarbonate soda (Baking soda)
-
Student Lab Reports
-
Crayons/Colored Pencils
-
Video: "Evidence of Chemical Change"
Pacing
5m
Warm-up Discussion
5m
Video & Predictions
20m
Lab Report Drawing
5m
Sharing & Closure
Instructional Steps
1
Warm-up: The Sinking Rock
Hold up a rock and a glass of water. Ask: "Is this rock a solid or a liquid? How do we know?" (Keeps its shape, hard). Repeat for the water. The Pivot: Ask students to predict if bubbles will form if you drop the rock in the water. (They won't—it just gets wet).
2
Viewing with Intent
Play the video. Pause at 0:15. Have students turn and talk: "What do you think will happen when the vinegar hits the powder?" Pause again at 0:40. Ask: "Where did those bubbles come from? Were they in the bottle of vinegar? Were they in the powder?"
Teacher Tip: Explain that the red food coloring is just for "making it easier to see" and doesn't cause the reaction.
3
The Lab Report
Students use the Bubbling Breakthrough Lab Report. In the "Before" box, they should draw the separate powder and liquid. In the "During" box, they draw the mixing. In the "After" box, they focus on the bubbles/foam. They must use the Word Bank to label SOLID, LIQUID, and GAS in the correct steps.
Key Vocabulary
Chemical Change: When substances mix and create something brand new.
Evidence: The clues (like bubbles) that prove a change happened.
Reactants: The "ingredients" that go into the chemical change.
Extension Challenge
What if we mixed baking soda and water instead of vinegar? Have students predict. Perform the demonstration.
"Why didn't it bubble? Because we need the specific ingredients (reactants) to make this chemical change happen!"
