Create your own active volcano for your next science fair from ingredients commonly found in your kitchen. The volcano allows you to simulate the process of an active volcano as well as demonstrating the chemical reaction of an acid and base material once mixed together. Your base material (baking soda), neutralizes the acid (vinegar). This produces carbon dioxide, which causes the lava ingredients to bubble out of the volcano in an impressive show.
Instructions
1. Line a shallow cardboard box, such as the type that holds cans of food or soda, with aluminum foil. Alternately, use a disposable aluminum roasting pan as your base.
2. Cut the neck off a 16 to 20 ounce plastic bottle with a utility knife. Cut the neck of at a 45 degree angle to help shape and control the lava flow.
3. Glue the bottom of the bottle to the center of your base with household cement. Follow the application instructions on the cement bottle, then allow it to dry for the time indicated on the instruction label.
4. Form the volcano around the bottle with modeling clay. Use modeling clay that air dries to a hard finish and isn't water-soluble. Shape the clay into the cone-like shape of the volcano, but avoid covering the bottle opening. Allow the clay to dry completely.
5. Paint the volcano in your desired colors with acrylic paint. Allow the paint to dry.
6. Pour one-half cup of vinegar into the volcano opening. Add two to three drops of liquid dish soap and two or more drops of red food coloring to achieve the desired color for your lava.
7. Place three tbsp of baking soda into the center of a square of tissue. Gather the edges of the tissue and twist them together to secure a packet of baking soda.
8. Drop the baking soda packet into the volcano and wait. Within 10 to 30 seconds, the red lava boils out the top of the volcano and down the sides.
Tags: baking soda, active volcano, base material, bottle with, into volcano, modeling clay