Explore the properties of atomic absorption and discover how certain elements absorb several specific wavelengths of light by viewing the dark line (absorption) spectra of various colored solutions including solutions containing elements that astronomers observe: erbium and praseodymium. ?Aligned to the Next Generation Science Standards (NGSS)* Disciplinary Core Ideas: ?PS4.A; PS4.B; LS1.D Performance Expectations: ?MS-PS4-2; MS-LS1-8; HS-PS4-1 Cross Cutting Concepts: ?Structure and Function; Cause and Effect Engineering Practices: ?Developing and Using Models; Using Mathematics and Computational Thinking; Obtaining, Evaluating, and Communicating Information. ?Kit Contents: Red Food Dye, 20 mL Yellow Food Dye, 20 mL 0.001 M Potassium Permanganate, 20 mL 1 M Copper (II) Chloride, 20 mL 0.1 M Erbium Chloride, 20 mL 0.1 M Praseodymium Chloride, 20 mL 6 Petri Dishes 6 Pipettes 3 Black Construction Paper Pieces 2 Diffraction Grating Slides ?DOT Info: UN3082; Cupric chloride solution; Limited quantity equal to or less than 5 L. ?*"Next Generation Science Standards" is a registered trademark of Achieve. Neither Achieve nor the lead states and partners that developed Next Generation Science Standards was involved in the production of, and does not endorse, this product.