Have you ever made a homemade lava lamp? Simple and classic science experiments for young kids! We love to explore science with common items found around the house. Homemade lava lamps and density experiments are two of our favorite science activities. Combine the two fun science concepts for a cool experiment the kids will love to do over and over again.
HOMEMADE LAVA LAMP SCIENCE ACTIVITY FOR KIDS
Part of our series on 35+ awesome kid’s science activities to try!
Hands on science can be found right in the kitchen! Check out the pantry for all the supplies you need to try making your own lava lamps. This one is also easy to do with a group in a classroom setting too. Science is exciting for kids.
We love simple chemistry experiments because of the cool reactions! What is chemistry? It’s a reaction or a change between two or more substances. Sometimes it’s a slow reaction and sometime’s it’s a crazy wow reaction like our volcanoes!
Check out some of our neat Chemistry Experiments for kids below!
Making these homemade lava lamps is also a great way to explore chemistry for kids of all ages. If you want to add more to this classic science experiment, use our free printable science experiment worksheets.
Explore chemical reactions and density in one fun and simple activity.
To get started with your homemade lava lamp, you will need 4 easy ingredients.
I love these Voss plastic water bottles. Although they are a bit pricey, I reuse them over and over again. Our Earth Day Discovery Bottles, Glitter Calm Down Bottles, and science discovery bottles are made from the same bottles purchased last year!
Make your homemade lava lamp in minutes!
Mix food coloring and water in small containers.
Fill bottles with baby oil about 1/2 to 2/3 full.
Use an eye dropper to check out how the colored water falls through the oil with out mixing.
NOW MAKE YOUR HOMEMADE LAVA LAMP FIZZ
Once finished testing out the eye dropper and colored water, we poured the rest of the colored water into each bottle. The safest way was to grab a funnel. We let the oil and water settle before continuing with our lava lamp experiment.
Add an Alka Seltzer table to each one. Watch the cool chemical reaction.
When the lava lamp chemical reaction slows down, add another tablet to your homemade lava lamp. What do you think will happen? How is the colored water moving up through the oil? Ask plenty of questions to get your kids thinking!
You can really get your homemade lava lamp going crazy by adding more alka seltzer tablet, but watch out…
It might erupt out of the bottle! Be prepared for a little mess, but this lava lamp is so much fun.
What else can you do with those aka seltzer tablets? Make pop rockets!
Cool lava lamp science!
I love that we can combine two interesting science experiments together for one visually appealing activity. First the oil and water density experiment shows how two liquids have different weights. Oil is lighter than water. It floats on top of the water. The beads of colored water slowly move through the oil and sink because they are heavier.
For the lava lamp action, when water and alka seltzer combine they form carbon dioxide. The gas bubbles rise through the oil carrying the colored water. When the chemical reaction slows, the colored water falls back down.
You can add more alka seltzer. Or you can have fun shaking the bottles and watching the two liquids separate again.
A classic homemade lava lamp activity is a must try
Click on the photos below for more awesome ways to explore science and STEM with your kids!