Innovating Science Small Group Learning: Separation of a Mixture of Solids

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 5 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:
15g Benzoic Acid/Acetanilide 1:1 Mixture
15g Benzoic Acid/Acetanilide 2:1 Mixture
15g Benzoic Acid/Acetanilide 3:1 Mixture
1g Methyl Violet
135mL Ethyl Acetate
75mL Sodium Bicarbonate, 1.0M
100mL Hydrochloric Acid, 1.0N
12 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.