Students will observe and measure the evolution of carbon dioxide gas from the decomposition of calcium carbonate when mixed with an acid. Students will also create experiments to determine the rate of reaction with different concentrations of hydrochloric acid. The activity contains enough materials for 15 groups of students as well as a Teacher’s Guide and Student Study Guide Copymasters. Meets Big Idea 4, Investigation 10, Primary Learning Objective 4.1.

Kit Includes:
1 x 200g Marble Chips
4 x 100mL Hydrochloric Acid, 36%
15 Silicon Tubing
15 Dispensers,10mL

**Materials needed but not supplied:
Precision Balance, 0.001g (shared)
Distilled Water
Timer or Stop Watch
Erlenmeyer Flasks
#2 Rubber Stoppes, One Hole
Glass Tubing, 3 - 4cm
Graduated Cylinders, 25mL
Laboratory Stands
Burette Clamps or 3-prong Clamps