Hi all! I just got done doing my science fair project. We took yellow roses and added blue food coloring. I know this project sounds really simple, but my kids were really into it and the predictions they made were outrageous! I got answers such as brown, purple, black, everything under the sun! Two kids made the prediction that the flowers would turn green, but I think that only happened by accident. I guess we need to read Mouse Paint and some of those other great color-mixing books again.
Anyway, the science fair is on Tuesday, and I thought that since the kids really got into observing the changes in the yellow flowers, why not use white carnations with red food coloring to change them pink for Valentine's Day? Here is a prediction sheet so that your kids can predict what they think will happen if you put red food coloring into the water:
I also used 20 drops of food coloring and clear cups so the children could see the colored water as well as the stem of the flower turning that color.
If you have any great Valentine science ideas to share, please leave me a comment!