Science Fun for Kids: Fireworks in a Jar

Science Fun for Kids - Fireworks in a Jar

Last summer I came across a very cool science experiment for Fireworks in a Jar on one of my favorite blogs I Can Teach My Child. I have found the most wonderful educational activities and crafts for kids on that site, so you’ll want to check it out if you haven’t already. That experiment has been stuck in the back of my head ever since, and with all the fun 4th of July crafts we’ve been doing this week, I thought it only fitting to include something we can learn from. This seemed like the perfect project!

This is a very simple science experiment to do with your child, and you most likely have everything in your cupboard to do it. You will need warm water, vegetable oil and food coloring.

Fill your jar with warm water.

In a separate bowl, mix 3 – 4 tablespoons of oil and several drops of different colors of food coloring. We used red, blue, yellow and green. Use a fork to gently mix the oil and food coloring together.

Pour the oil mixture into the jar of warm water.

Science Fun for Kids - Fireworks in a Jar

Watch the explosion of color as the food coloring slowly sinks out of the oil and into the water. Be ready, because it is over in just a few minutes as it continues to expand and mix.

What’s the science? Food coloring dissolves in water but not oil. The less dense oil will sit at the top of the water, and the food coloring with begin to sink because the droplets are heavier than the oil. As the food coloring dissolves in the water it will look like a colorful fireworks show right in the jar!

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  1. I tried this once and it didn’t work. I didn’t warm the water! Must try again.

  2. That looks so neat.

  3. Tammy S says:

    This is so cool! I can’t wait to try this with my kids. Thanks for always having the best recipes and crafts/projects!

  4. That is pretty neat! :)

  5. How fun! My kids would love this.

  6. This looks like so much fun! I’m going to have to try this with my daughter. She’d love this!

  7. This would blow my 3 year old’s mind. Gotta grab some food coloring!

  8. How cool! My kids will love this!

  9. This is so adorable!!!

  10. That is just SO COOL.

  11. We’ve done this with our son… it’s so neat!

  12. I wanna play around with this little bit of science!

  13. What an awesome idea and the educational aspect is great as well.

  14. what a really cute idea I love it

  15. Jo-Ann Brightman says:

    This is a cool experiment to do with children. They have fun and learn at the same time without it seeming like work.

  16. This is awesome!

  17. My son will totally dig this! Thanks for the fun experiment!

  18. How fun. My kids would love this.

  19. Great back-up plan for a rainy 4th.

  20. Looks cool to bad it doesn’t stay that way it would make a neat table topic piece.

  21. That’s so cool! My son is now fireworks obsessed so we’re totally doing this tomorrow.

  22. Mary Happymommy says:

    My kids would love this. Thanks for sharing!

  23. What a fun experiment that would be for a younger family that homeschools!

  24. Deborah Mireles says:

    This is such a neat idea, Im not sure who would be more excited about it, me or my grandaughter! I will definitely be doing this one with her the next time she comes over!

  25. This is really a cool experiment. The grand kids will like this one. Tho I will have to explain how and why it happens to my grandson hes in why and how stage right now. thanks for the great ideas

  26. How fun, my kids would loe this.

  27. Donna Martin says:

    this is so creative..i love how the colors explode

  28. That looks cool. I’m sure both of my children would love this!

  29. I used to drip food coloring and India ink into water to see the colors do this but I hadn’t seen it with the layer of oil. Very cool.

  30. Debbie Welchert says:

    What a neat science experiment for my grand kids to do. I love that is so simple too and that it’s making science fun for the kids.

  31. I’m going to have to try this, my kids would love to do this!
    Thanks for sharing!

  32. My boys would love this! It will definitely make it onto our experiment list!

  33. What a clever experiment! My granddaughter is going to love this! Thank you!

  34. My son will love this! Thanks for posting!

  35. Carolann Leibenguth says:

    My son will love this it will not only satisfy his curious nature but can teach him some science while we are at it.

  36. Jessica Fortner says:

    This is a cheap and fun thing to explore with my sons. I will check out that website for other ideas as well. Thank you.

  37. Lisa Konieczke says:

    I love doing these things with my kids. My Daughter and I as one of her GS Brownie Projects, we did the density experiment and made an egg float in a glass of water. It was really awesome. My kids will definitely enjoy this, I think I will too!

  38. Michael Lambert says:

    This is pretty cool and I bet my daughter would really enjoy this. I like how easy it is to do.

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