We have had so much fun with baking soda and vinegar experiments. I decided to try a new base in our next experiment which we have plenty of: chalk. We always have odds and ends of sidewalk chalk and it was fun to re-purpose a little of it for this experiment.
Bubbling Chalk: Science Experiment
You will need:
- Chalk (two colors if you want to include color mixing)
- Tenderizer or Hammer
- Ziploc Bag
- Clear plastic cup
- White vinegar
Place the chalk in a plastic bag and have the children take turns smashing it with a hammer or tenderizer on the flat side. Our kids found this task to be quite fun. It is not every day that I encourage them to smash things. Fill a plastic cup about 2/3 to 3/4 full of white vinegar. Have one of the children drop a handful or a tablespoon of the mixed color chalk into the vinegar. Watch what happens. At first, it will seem like nothing is going to happen. Then the magic begins and the chalk bubbles up little by little and then at a more rapid pace, mixing the colors as it floats to the surface. Discuss how vinegar is an acid and chalk is a base. The chemical reaction causes bubbles from carbon dioxide to form so that the chalk rises to the surface. We did this several times so that all four of our children could try it out. We tried one color at a time and the mixing of two colors. The color mixing was a little more dramatic.
Here is our video of the experiment:
Visit the links below for more great chalk ideas from the #playfulpreschool team!
Chalk Letter Writing from Learning 2 Walk
Alphabet Activities: Chalk Road by Growing Book by Book
Chalk Painting Letters from Mom Inspired Life
Chalk Dust and Feather Writing: Learning Names in Preschool by The Preschool Toolbox
Setting-up for Summer Learning with Chalks from Rainy Day Mum
Chalk Paint from Tiny Tots Adventure
Chalk Shadow Drawings by Still Playing School