To create a fun chemical reaction
- Container (tall narrow vase or empty soda bottle works well—at least 16 ounces)
- Baking pan or something to catch the overflow
- Baking soda—one tablespoon (or more depending on the size of your container—doesn’t have to be exact)
- Vinegar—one cup (or more depending on the size of your container)
- Green food coloring
- Measuring cup
- Dishwashing liquid
Place the container in the pan. Pour one tablespoon of baking soda in the container. Pour two or three drops of food coloring into one cup of vinegar, along with a squirt of dishwashing liquid. Pour into the container. Watch what happens!
Green foam sprays out of the top and oozes down the side of your container. The baking soda reacts with the vinegar to produce carbon dioxide gas, a chemical reaction. The gas builds up pressure to force the solution out of the top of the bottle.