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Whats the easiest, or best way, of making cool homemade lavalamps.

2007-02-18 04:43:38 · 4 answers · asked by Anonymous in Society & Culture Other - Society & Culture

4 answers

Easy Science Projects


Make Your Own Bubbling Lava Lamp


Learn how to make an inexpensive science toy that will be a guaranteed hit with the kids! Ok, so everyone knows that oil and water don't mix. Try adding a few drops of food coloring and a little Alka-Seltzer fizz to the solution and the bubbling concoction is guaranteed to provoke a few ooohs & ahhhs!

Materials:
- One clean, plastic soda bottle (16 oz. size works well) - Soda bottle cap - Vegetable oil (the cheaper the better) - Food coloring - An Alka-Seltzer tablet - Water

Watch the Video

Experiment:
- Fill the bottle 3/4 full with vegetable oil.

- Fill the rest of the bottle with water (almost to the top but not overflowing).

- Add about 10 drops of food coloring. Be sure to make the water fairly dark in color. Notice that the food coloring only colors the water and not the oil. Hmmm?

- Divide the Alka-Seltzer tablet into 8 pieces.

- Drop one of the tiny pieces of Alka-Seltzer into the oil and water mixture. Watch what happens. When the bubbling stops, add another chunk of Alka-Seltzer. It's just like a lava lamp!

- When you have used up all of the Alka-Seltzer and the bubbling has completely stopped, screw on the soda bottle cap. Tip the bottle back and forth and watch the wave appear. The tiny droplets of liquid join together to make one big lave-like blob.

How Does It Work:
First of all, you confirmed what you already knew... oil and water do not mix. The molecules of water do not like to mix with the molecules of oil. Even if you try to really shake-up the bottle, the oil breaks up into small little drops, but the oil doesn't mix with the water. Food coloring only mixes with water. That's why it does not color the oil.

When you poured the water into the soda bottle with the oil, the water sank to the bottom. That's because water is heavier than oil. Scientists say that the water is more dense than the oil. If oil from a ship spills in the ocean, the oil floats on top of the water.

Here's the surprising part... The Alka-Seltzer tablet reacted with the water to make tiny bubbles of carbon dioxide gas. These bubbles attached themselves to the blobs of colored water and cause them to float to the surface. When the bubbles popped, the color blobs sank back to the bottom of the bottle. Now that's a burst of color!



This is the site.

http://www.stevespanglerscience.com/experiment/35



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2007-02-18 04:50:04 · answer #1 · answered by unicornfarie1 6 · 0 0

oil lots of it and take a dump in the bottle then put lite to it and watch the dingle berry float hooray!

2007-02-18 04:55:28 · answer #2 · answered by Anonymous · 1 0

get a bottle
add water
add ink
add vegatable oil
add calcium tablet
enjoy the show

2007-02-18 04:47:54 · answer #3 · answered by Kev 4 · 0 0

What he said. Just open one of the templates, and get started. You won't get comfortable until you get into it and do it. Good luck.

2016-03-29 01:22:46 · answer #4 · answered by Amber 4 · 0 0

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