![best aim lab exercises best aim lab exercises](https://img.youtube.com/vi/Jrplw6BT0aM/0.jpg)
The farther the ink travels, the more it is attracted to the solvent. As the solvent rises, it dissolves the ink on the paper and separates the ink into its components. When you place chromatography paper into a solvent, the solvent begins to move up the paper. Here's how chromatography works: Different inks have different properties, such as how much they can be dissolved in solvents. In order to develop and apply methods of water remediation, environmental engineers, must also be able to separate mixtures to remove the pollutant components. Can you name some for me? (Listen to student responses.) Yes, examples might include industrial oil spills or chemical leaks into drinking water sources. We have already discussed environmental engineering situations that require water remediation. Criminal investigators use this technology to identify substances such as drugs, blood, ink and other fluids. The separation of a mixture into its components is a physical process that is, because the components of the mixture are not chemically combined, they can be separated by physical means. Who has heard of chromatography? Chromatography is a way to look at complex mixtures by separating them into their components. International Technology and Engineering Educators Association - Technology In a chemical process, the atoms that make up the original substances are regrouped into different molecules, and these new substances have different properties from those of the reactants. This activity focuses on the following Three Dimensional Learning aspects of NGSS:Īnalyze and interpret data to determine similarities and differences in findings.Īlignment agreement: Thanks for your feedback! Science knowledge is based upon logical and conceptual connections between evidence and explanations.Īlignment agreement: Thanks for your feedback!Įach pure substance has characteristic physical and chemical properties (for any bulk quantity under given conditions) that can be used to identify it.Īlignment agreement: Thanks for your feedback! Substances react chemically in characteristic ways. Analyze and interpret data on the properties of substances before and after the substances interact to determine if a chemical reaction has occurred.Ĭlick to view other curriculum aligned to this Performance Expectation