Many flowers change color in the prescence of a base or an acid, and Education.com has a neat idea for experimenting with this and flowers!! You’ll need different colors of flowers, baking soda, and vinegar as well. You can find an in-depth explanation of how to do this expirement on their site!! I love experiments like this because they are simple, and a child of any age can do them! Your little one may not understand the concept, but even doing experiments like this with young kids will help to capture their interest in science!