Acids and bases, Students will learn about acids and bases through a class discussion and then test a dilute acid and dilute base with neutral litmus paper to learn how the paper indicates something is acidic or basic.
Cartesian Diver Only - 4 cm WL 1040, Ideal for Showing Archimedes Principle, with a hollow glass diver, shaped like a diver, with a 10in x 1 1/2in glass cylinder, a rubber sheet and rubber band, Fill the cylinder with water, drop in the diver it floats