Monday, February 20, 2012

Pop Top- Science Experiment

So, my Kinders like LOVE science experiments.  Here's one of their favs:  Pop Top :)

Here's how you do it:
- Fill a film canister (you know, the ones from the 80s)  :) with water.
- Put 1/2 a tablet of Alka-Seltzer in the water.
- QUICKLY put the lid back on top of the canister.
- Step back.
- In about 5 seconds, the top will go FLYING off with a loud "pop"!!

Don't forget to put a tray or something down because occasionally the canisters will fall over!

What you learn:  REACTIONS!  Water and Alka-Seltzer tablets form a reaction in the form of bubbles!    Pressure builds up and the top finally pops off releasing the built up pressure!

If they are well-behaved through the experiment and keep safety first (meaning-- DONT point your canister at someone when it's about to pop), I surprise them with a 10 canister POP extravaganza!  They LOVE LOVE LOVE it! :) 

This one (and our Diet Coke and Mentos experiment) are their favs.

Science can be FUN! :)

What is your students' favorite classroom activity??


  1. Makes me wonder what that stuff does when it's digested. :) Thanks for sharing your experiment!

    ❀ Tammy
    Forever in First

  2. Hey Cutie!
    You won the giveaway!!! email me!

  3. Do this experiment every year with my kiddos. It's soooo fun!
    I'm your newest follower.
    Dragonflies in First

  4. i am doing this fr a sci. fair project


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