Students will witness clear demonstrations of processes such as changes in matter, the chemical nature of fire and decay, and how energy, friction, gravity, and machines work. Key Content Includes: Solids, Liquids, Gases, and Changing State; Chemical Changes-Fireworks; Hot Air Balloon; Energy-Moving Toys; Friction-Slipping and Sliding; Gravity-Faster and Faster; and Machines-Making it Easier.