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Lemon Volcano
Lemon juice is an acid. Baking soda is a base. Together they make bubbles of gas.
Grab this
- 1 lemon cut in half
- Baking soda
- A plate
- A spoon
- Food coloring (optional)

Do it in 3 steps
1
Put the lemon half on a plate and poke the middle with a spoon.
2
Add a drop of food coloring.
3
Sprinkle baking soda on top and squeeze. Watch it fizz.
DO IT WITH MEYour turn! Beat the clock.
Press start, then put the screen down and build. We'll cheer when time is up.
5:00
⭐ Bonus round
Which fizzes more, lemon or orange?
🧠 Why it works
Lemon juice is an acid. Baking soda is a base. Together they make bubbles of gas.
A grown up should be nearby for every challenge. Clean up together when you are done.
Did you do it?
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5:00LEFT
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