Last week we started some chemistry. The kids carried out an experiment in which they explored the properties of sulfur and iron using a microscope and a magnet. Then they combined the 2 elements and determined whether they had performed a physical change or a chemical change.
Here are some of the high points of their results:
iron: black, magnetic
sulfur: yellow, smelly, not magnetic
iron + sulfur: grayish yellow, smelly, BUT easily separated from each other with a magnet
Physical or chemical....you decide!