Acid rain is a term used generically to describe any type of acidic moisture, be it rain, snow, or fog. Acid rain can have devastating effects on not only aquatic ecosystems but also terrestrial areas. Acid rain not only affects naturally-occurring surfaces, such as exposed rocky surfaces of mountainous regions, but also human-made surfaces as well. Different stone and metal substances used in the construction of buildings, statues, monuments, etc. may all be affected by acid rain. The rates of erosion and weathering may increase rapidly depending on the degree of acidity in the precipitation. In this activity, students expose many rock materials and metals, both naturally-occurring and common in construction, to an acidic environment and examine the reaction of these materials in contrast to the same materials exposed to “normal” rain (tap water). Kit contains enough materials for 15 groups. Teacher’s Manual and Student Study Guide copymasters are included. Aligned to the Next Generation Science Standards (NGSS)* Disciplinary Core Ideas: PS1.A; PS1.B; ESS2.A Performance Expectations: MS-PS1-2; MS-ESS2-2; HS- ESS2-5; HS-PS1-3 Cross Cutting Concepts: Patterns; Scale, Proportion and Quantity; Structure and Function Engineering Practices: Analyzing and Interpreting Data; Constructing Explanations and Designing Solutions; Planning and Carrying Out Investigations Kit Includes: 1 bag Marble Chips Calcium Carbonate 1 bag Brick Chips 1 bag Granite Chips 1 bag Limestone Chips 1 bag Sandstone Chips 1 bag Steel Shot 1 bag Copper Shot 1 bag Zinc Shot 3 x 25mL Sulfuric Acid Concentrate (to make 500mL each) 120 Measuring Cups, Disposable DOT Info: Small quantity exemption 173.4 THIS PACKAGE CONFORMS TO 49 CFR 173.4 for domestic highway or rail transport only *”Next Generation Science Standards” is a registered trademark of Achieve. Neither Achieve nor the lead states and partners that developed the Next Generation Science Standards was involved in the production of, and does not endorse, this product. WARNING: This product can expose you to chemicals including Respirable crystalline silica and Strong inorganic acid mists containing sulfuric acid, which are known to the State of California to cause cancer. For more information go to http://www.P65Warnings.ca.gov.