I am so lucky to be the science docent for Dallin's class again this year. I love science and was so excited to expand on the lessons they've had about the states of matter (solids, liquids, and gas). So today we made Alka Seltzer Rockets!
This is a great lesson to show how a solid can be mixed with a liquid to make a gas.
The Experiment: (Please note – this experiement should be done out side).
• Fill a small container (think of something like a clear 35mm film canister) about half full with water.
• Add alka seltzer tablets to the water
• Quickly put the lid on the container
• Quickly place the container on a stable surface with the lid on the ground.
• Stand Back! The container will pop open and you will have lift off (well at least a few inches of lift off)
(The alka seltzer tablet is made out of citric acid and sodium bicarbonate and when they react they release CO2, Carbon Dioxide, which creates the pressure in the container).
No lesson would be complete without food being brought into the mix somehow. So here is a cool way to show the same reaction with rootbeer floats!
Enjoy rootbeer floats – ice cream or frozen yogurt (solid) and rootbeer (liquid) mixed together make foam (gas) on the top.
5 comments:
You totally have to try diet coke and mentos.
My son is a science geek, oh I mean science smartie. He would love to do this!!! He is mad I still haven't approved the diet coke and mentos thing :)
You totally rock. I know nothing about science so I love to see everything you come up with. Awesome!
sounds like fun. we'll have to try it! my kids would love it.
Did you get your Paknaks?
Post a Comment