Today we reviewed what evidence pointed to a chemical change taking place. To demonstrate that some chemicals are more reactive than others we again put together baking soda and calcium chloride and baking soda and citric acid. This time, however, we did the experiment with ziploc bags so that we could capture the gas that forms. Students found that the solution with citric acid created much more gas than the one with calcium chloride.
0 Comments
Leave a Reply. |
Archives
April 2020
|