Baking Soda Volcano – An oldie but goodie

What you’ll need:

Volcano Structure

  • Clean gallon milk container or soda bottle
  • Construction paper
  • Recycled paper or newspaper
  • Flour
  • Warm Water
  • Cookie sheet with edges

Stand the bottle on the cookie sheet.  To make up the paste, just pour some white flour in a bowl, and add water gradually until you have a consistency that will work well.  Cut the paper into strips.  Dip the paper into the flour mixture and remove excess liquid by letting it drip or running the strip through two of your fingers.  Layer the newspaper/recycled paper strips on the bottle until you have a shape that you like.  Be careful not to cover the opening of the bottle.  Let dry.  Repeat this process with the colored construction paper.  You can also choose to paint the structure once it is completely dry but we were anxious to see results so we used the construction paper. Let dry overnight.

What you’ll need:

For the Lava:

  • Dish Soap
  • Baking Soda (make sure it’s not baking powder)
  • Vinegar
  • Ketchup (or food coloring)
  • Paper towels or a cloth (just in case)

Put  about 2 cups warm water and about 6-10 drops dish soap into the bottle.  Add about 2 Tablespoons of ketchup.  Add about 2 cups of vinegar into the bottle.  Swish everything around.  Place some of the baking soda into your container and watch as the reaction takes place!

You can also put the baking soda in first and pour the vinegar at the end.  It works both ways.

What’s happening?

The baking soda (sodium bicarbonate) is a base while the vinegar (acetic acid) is an acid. When they react together they form carbonic acid which is very unstable, it instantly breaks apart into water and carbon dioxide, which creates all the fizzing as it escapes the solution.


What do you think?

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )


Connecting to %s