|

Amazing Inflating Balloons


Both chemistry and cooking are about combining ingredients to create something completely different. In cooking, certain ingredients, such as yeast and sugar, are vital to the finished product because of the chemical reaction they produce when they're combined. This activity demonstrates how yeast works.

Materials

  • 3 tablespoons sugar
  • 1/2 cup warm water
  • 3 small packages active dry yeast
  • One empty 1-quart soda or juice bottle
  • Balloon
  • Rubber band

Directions

  1. Have your child dissolve the sugar in the water.
  2. Stir in the yeast, then pour the mixture into the bottle.
  3. Stretch the opening of the balloon over the mouth of the bottle and secure it with the rubber band.
  4. Set the bottle in a warm place, such as on top of your refrigerator.
  5. In a while, the balloon will inflate. Why?
  6. The yeast cells are eating the sugar, and as they do so, they produce a gas called carbon dioxide. Carbon dioxide is heavier than oxygen, so it pushes the oxygen in the bottle up and into the balloon. The same happens with yeast used in cooking. In that case, the release of carbon dioxide helps dough rise.

|

Copyright © 2001 by Patricia Kuffner. Excerpted from The Children's Busy Book with permission of its publisher, Meadowbrook Press.

To order this book visit Meadowbrook Press.


highlights

Zika Virus Q&A: 4 Facts for Pregnant Women & Families
Zika virus is pretty scary. Pregnant or not, learn what steps to take to protect your family from Zika, including travel restrictions and mosquito bite prevention.

Find Today's Newest & Best Children's Books
Looking for newly released books for your child? Try our Book Finder tool to search for new books by age, type, and theme!

Ommm! 5 Meditation & Mindfulness Activities for Families
Family meditation and mindfulness can help reduce anxiety and promote health and happiness. Learn some fun and easy mindfulness activities for kids, and set them on the path to inner peace!

Ready for Kindergarten?
Try our award-winning Kindergarten Readiness app! This easy-to-use checklist comes with games and activities to help your child build essential skills for kindergarten. Download the Kindergarten Readiness app today!

stay connected

Sign up for our free email newsletters and receive the latest advice and information on all things parenting.

Enter your email address to sign up or manage your account.

Facebook icon Facebook icon Follow Us on Pinterest

editor’s picks