Performing liquid-liquid extractions allows students to apply their knowledge of the properties of molecules. Students will learn how the properties of solubility can be utilized to separate two solids in a mixture. This kit provides for a qualitative test that will help students visualize that two different solids were collected, despite their similar appearance. Students will also explore the concept of the law of conservation of mass as well as how acid-base reactions can be utilized to manipulate molecules. This kit contains enough material 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 Performance Expectations: MS-PS1-1; MS-PS1-2; MS-PS1-5; HS-PS1-2; HS-PS1-3; HS-PS1-7 Cross Cutting Concepts: Scale, Proportion and Quantity; Patterns; Energy and Matter; Scientific Knowledge Assumes an Order and Consistency in Natural Systems Engineering Practices: Developing and Using Models; Analyzing and Interpreting Data; Planning and Carrying Out Investigations; Scientific Knowledge is Based on Empirical Evidence; Science Models, Laws, Mechanisms, and Theories Explain Natural Phenomena; Constructing Explanations and Designing Solutions; Using Mathematics and Computational Thinking Kit Includes: 35g Benzoic Acid/Acetanilide 1:1 Mixture 35g Benzoic Acid/Acetanilide 2:1 Mixture 35g Benzoic Acid/Acetanilide 3:1 Mixture 2g Methyl Violet 400mL Ethyl Acetate 200mL Sodium Bicarbonate 250mL Hydrochloric Acid, 1.0N 35 Pipettes DOT Info: UN1173, Ethyl acetate, 3, II, Ltd Qty UN1789, Hydrochoric acid, 8, III, Ltd Qty *”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.