Views: 19 Author: Site Editor Publish Time: 2018-10-16 Origin: Site
What reactions will be happen when the water mixed with different color?
Are the children curious about the diffusion of color on the PH test paper?
This test tube science toy can help children to comprehend these knowledge of chemistry that easy to understand. It can also help them to know the different changing of color,cultivate the ability of observation and cognizance for color,and provide some artistic atmosphere for their future.