Construct an argument with evidence that some changes caused with heating or cooling can be reversed and some cannot. Balloon science for kids comparing gas, liquid and solids. Talk about how these states can be changed in certain situations.
Apples & Handwashing: We put a clean apple slice in one jar. We passed another apple slice around the class as we came in from recess with dirty hands. We have been observing the two jars in the science center. This is the difference after 8 days - gross!
Fun Science Experiment: Pour whole milk + red bull - let sit 5 minutes. The acid in the red bull will cause the protein in the milk to separate - liquid changing to solid! New Science Experiment to try!