The magical baking soda powder itself is a chemical substance. The magical baking soda powder itself is a common chemical practice: most of the baby's clothes made of baking soda powder are cotton, and the cotton material is softer and more comfortable. But cotton clothes are not easy to wash, especially when you spit milk, spill milk and get feces on your clothes. This is an ideal way to do it ... Social activities teaching plan for middle class: Unit 2 Lesson 4 Unit 6 Bear Bubble: Changes of Baking Soda and White Vinegar Teaching objective scientific concept: Baking Soda and White Vinegar will react chemically to produce new substances. Carbon dioxide is a gas with special properties. Process and Methods: Through observation, experiment, analysis and reading materials, the correct conclusion was drawn. Emotional state ...............................................................................................................................................................................