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Lemon Volcano

Build it⏱ 5 minutesAges 4-10

Lemon juice is an acid. Baking soda is a base. Together they make bubbles of gas.

See the steps ↓

Grab this

  • 1 lemon cut in half
  • Baking soda
  • A plate
  • A spoon
  • Food coloring (optional)
Supplies for Lemon Volcano

Do it in 3 steps

Lemon Volcano step 1
1

Put the lemon half on a plate and poke the middle with a spoon.

Lemon Volcano step 2
2

Add a drop of food coloring.

Lemon Volcano step 3
3

Sprinkle baking soda on top and squeeze. Watch it fizz.

Tinker Ted with a stopwatchDO IT WITH ME

Your 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.

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