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What is the difficulty of this project
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The activity can be viewed at: Make an Alka-Seltzer Powered Lava Lamp

Hi Lauriane,
Making an Alka-Seltzer Powered Lava Lamp is a really simple and fun activity! To do this activity, you only need empty bottles, hot and cold water, food coloring, vegetable oil, and an alka-seltzer tablet. From there, you can follow the instructions and see your lava lamp in action!
Have fun with this project,
Carissa

Hello Lauriane,

As noted in the lava lamp project, "this activity is not recommended for use as a science fair project. Good science fair projects have a stronger focus on controlling variables, taking accurate measurements, and analyzing data. To find a science fair project that is just right for you, browse our library of over 1,200 Science Fair Project Ideas or use the Topic Selection Wizard to get a personalized project recommendation."

You might be interested in this intermediate-level project which looks at the effect of water temperature on the Alka-Seltzer fizz time:

https://www.sciencebuddies.org/science- ... ction-time

Let us know if you have more questions ... and good luck!
Madeline
Moderator