This is a perfect experiment for students learning about weathering. Experiment allows students to visually see how acid weathers away material. Experiment also shows students surface area and temperature differences and their effect on weathering. The ppt. is included and teaches the students Mechanical and Chemical Weathering. Freezing and thawing, animal actions, plant growth, abrasion, lichen, oxidation, and acid rain are covered. Experiment worksheet is included as well. If you like this p