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Alka Seltzer Blob Bottles!! - Such a great craft to do with kids! Need: 1 Liter (or any size) bottle, regular water, cooking oil, food coloring, and Alka Seltzer. Pour 3 quarters of a cup of water into the bottle, then fill the bottle the rest of the way up with your cooking oil. Next you want to wait for a little bit or until the water has settled at the bottom of the bottle and the oil at the top of it. Then pick your favorite color and pour about 8 drops of the food coloring into...

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from Little Bins for Little Hands

Alka Seltzer Rocket Eruption Science Activity

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Veg oil, water, alka seltzer, food coloring, and a bottle. Fill a bottle 2/3 with veg oil and 1/3 with water (keeping in mind to leave 1" at the top). Add 10 drops food coloring. Add 1 alka seltzer (broken in a few pieces, adding one piece at a time - when first piece stops bubbling, add next) and watch the colors.

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