We have done this vinegar and bicarbonate of soda experiment in many different forms.  It is truly a classic one.  This time we turned it into a Halloween fizzing pumpkin activity.  BB is also getting old enough to actually take part in these activities which makes me really happy.

Make sure you follow my Halloween board on Pinterest for more ideas.  Don’t forget to save the pin for later.

For this fizzing pumpkin activity you will need:

  • Bicarbonate of soda
  • Orange food colouring
  • Water
  • Pipe Cleaners
  • Bowl
  • Spoon
  • Tray
  • Vinegar
  • Condiment bottles

fizzing pumpkin activity

Mix the bicarbonate of soda with the food colouring and slowly add water until you can mold the mixture in your hands.

fizzing pumpkin activity

Next turn your mixture into balls and place them on the tray.

Cut up the pipe cleaners and stick them into the top of each of your pumpkins.

Leave them to dry for a day.

fizzing pumpkin activity

When they are ready, use vinegar to melt your fizzing pumpkins.  I put our vinegar into condiment bottles so that BB and YC could squeeze them out.  This worked really well for BB.  But for YC she used all her vinegar in about 2 minutes.  A pipette might have been a better idea for her.

fizzing pumpkin activity

Once she had finished destroying her pumpkins she then made the remaining “soup” into Halloween drinks called smushed pumpkins, which I thought was very imaginative of her.  BB loved this activity.  It is the first time that he has done this sort of thing.  He did try, at one point, to eat some of it but he didn’t try it again after that.  Like his sister, he tried using a spoon to mix everything together.

If you enjoyed this fizzing pumpkin activity be sure to check out my pom pom bats, cheesecloth ghosts, and sticky spider web game.

Pin for later:

Halloween fizzing pumpkin activity