How to Make a Baking Soda Volcano

When your child’s class is assigned a science experiment, does a baking soda volcano come to mind?  The chemical reaction from combining baking soda and vinegar produces nothing more than carbon dioxide and water, making the project safe and fun.  Here are the materials you need to make a baking soda volcano:

  • If your child has an upcoming science experiment, follow these instructions on how to make a baking soda volcano.1 plastic water bottle
  • Lots of strips of newspaper
  • Papier-mâché mix (a water and glue mix can suffice)
  • Soda box
  • Baking soda
  • Vinegar
  • Red or orange food coloring (optional)
  • Red fabric paint
  • Dark brown or black paint (optional)

Here are the modified instructions on how to make a baking soda volcano.  Photos from the original post can be seen here.

  1. Take the water bottle and cut off the top third of the spout.
  2. Invert the soda box so that it is upside down.  Tape the bottom part of the water bottle, open side up, to the top of the inverted soda box.
  3. Crumple up lots of pieces of newspaper into balls but do not pack them very tightly.
  4. Place the crumpled pieces of paper around the water bottle and tape them to the soda box and outside the water bottle, producing the shape of an inverted cone.  After taping down the paper, papier-mâché will be used to create a uniform surface for the volcano.
  5. Take a strip of newspaper and submerge it in the papier-mâché mix.
  6. Expand the wet newspaper strip vertically.  Pinch the top of the newspaper strip between the index finger and thumb of your left hand.  With your right hand, place the strip between your index and middle fingers just below your left hand.  Slide your hand all the way down the strip, removing any excess papier-mâché mix.
  7. Place one end of the newspaper strip at the very top of the volcano, laying it down the side of the volcano to its base at the soda box.
  8. Lay down papier-mâché-coated newspaper strips all around the volcano.  Make sure the dry newspaper in steps 3 and 4 is completely covered.
  9. Leave the papier-mâché to dry overnight.
  10. Paint the volcano the next day if it is completely dry, using dark brown or black as the base color.  Use red fabric paint to create streaks of lava originating from the mouth of the volcano.  Allow the paint to dry for a few hours.
  11. At last, setting up the eruption.  Take the baking soda and pour it into the water bottle inside the volcano, filling it up about a fourth of the way.
  12. Add a few drops of red food coloring in a glass of vinegar.  Stir until the food coloring is evenly distributed.  Pour the vinegar into the volcano slowly.  The reaction will take place right away.

If you want to be creative, use a water pump, as seen in the following video:

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Francis M. Unson

 

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4 Responses to “How to Make a Baking Soda Volcano”

  1. Michelle Simons Says:

    lol, kind of reminds me of one episode of The Brady Bunch when they made the same volcano.

  2. Anthony Baughn Says:

    i cant get the Papier-mâché right

    • Francis Unson Says:

      You’re not the only one who noted that the instructions in the main blog were sparse in regards to the making of Papier-mâché itself. I hope this helps.

      I watched this simple tutorial on how to make Papier-mâché a few times and I think this can help.

  3. David Says:

    That volcano was the best volcano I’ve seen!!!!

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