Fire-Turning steel wool into iron oxide/rust by chemically changing its form through lighting the wool on fire. This amazed the children as it sparked and created fire while remaining cool to the touch. Temperature- Creating and releasing heat in a beaker. Calcium chloride and vinegar were mixed in the beaker which created this reaction. The children felt the temperature of the beaker change from cold to warm. Mealworms- Bobby displayed and explained the three stages of a mealworm's metamorphosis. The children observed the mealworms with magnifying glasses and were able to touch and hold. Explosion- Created an explosion using baking soda and vinegar. The two substances mixed together created a chemical substance that released a gas. Slime- The children each created and took home slime. They mixed together saline solution, baking soda and glue which created a slimy and safe solution to play with. Balloons- Balloons were blown up without using air. This was done by adding Alka-Seltzer and baking soda to water. This caused a chemical reaction that released a gas in order for the balloon to expand.