This week we in introduced the Periodic Table of Elements. At first the kids were a bit overwhelmed by all the scary looking numbers and letters, but on closer inspection, they realized that there were a lot of elements they know quite well. After talking a bit about different elements the kids carried out an experiment in which they explored the properties of sulfur and iron using a magnifying glass, a microscope, and a magnet. They combined them, and then assessed 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!
Chemistry trivia: What are the chemical symbols for sulfur and iron? Ask your kids and let them show off their Latin!