Curated OER
Rainbow Electrophoresis Lab
Learners are introduced to the principles of gel electrophoresis. They practice loading gels and pipetting. For this laboratory activity, food color is separated into constituent pigments. The lab can be run with standard...
Curated OER
Thin Layer Chromatography (TLC) Separation of Plant Pigments - Chlorophyll, Carotene
Learners use TLC separations to identify various substances. In this chlorophyll lesson students separate pigments found in different plants.
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The Effects of Temperature on Chemical Mixtures
Students explore chemical cahnges and the effect of temperature on chemical mixturees, They make observations of the behavior and appearance of certain chemical mixtures and reactions.
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Lab: Percent of Composition of KClO3
Students find the percent of oxygen in potassium chlorate. In this percent composition lesson plan, students heat a solution of potassium chlorate using a catalyst, manganese dioxide, to decompose the potassium chlorate and release...
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Oil and Water
If you don't get along with someone, it's said that the two of you are like oil and water. Why is this? Explore the phenomenon and explain the phrase in one resource! Science superstars first observe samples of oil and water together....
Curated OER
Investigating DNA
Students engage in a variety of activities designed to facilitate the understanding of DNA. Activities include preparing human chromosome spreads, separating a mixture of dyes using gel electrophoresis and extracting DNA from onion cells,
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The Conceptual Theory of Chromatography
High schoolers conduct a lab to determine the best way to separate a variety of mixtures choosing between paper, thin layer and column chromatography. They use chromatography techniques to identify unknown substances and submit a lab...
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The Pure, The Mixture, The Unknown
Ninth graders participate in classroom discussions, demonstrations and hands-on laboratory activities about pure substances and mixtures with a focus on common household materials. They investigate: What is a pure substance? What is a...
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Column Chromatography
Students research the mechanics of liquid chromatography. In this technology instructional activity, students calculate the concentration of unknown samples. They write a report about their research and lab results.
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Preparation of Crystalline Derivatives of Aldehydes and Ketones
Chemistry explorers prepare a crystalline derivative and find its melting point. Once they discover the melting point, they are able to identify whether or not the substance is pure, and whether it is an aldehyde or ketone. This is an...
Curated OER
Molecular Explorations
Students explain the processes for separating DNA from tissue and separating complex mixtures. In this exploratory lesson students complete a lab where they extract DNA.
Curated OER
BioFuels: The Chemistry and Economics of Alternative Fuels
Junior chemists manufacture biodiesel in the lab. In this exercise, they check the purity of the biodiesel using thin layer chromatography. They also calculate its density and heat of combustion. They are sure to rise to the challenge...
Curated OER
Chromatography
Advanced techniques for the lab use of chromatography are detailed here and your students will learn the specifics of separating molecules using a staionary and mobile medium. Diagrams of the equipment used and some facts about how...
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The Chemistry of Refining Crude Oil
Consider our energy sources: wood, coal, oil, uranium. Learners compare the pollution to energy produced for each. They practice fractional distillation of an alcohol/water mixture to simulate the process of refining crude oil....
Curated OER
Introducing Chromatography
Young scholars investigate chromatography. In this chromatography lesson plan, students investigate a lab set up for chromatography.
Curated OER
Enzyme Labs Using Jello
Students test for the presence of enzymes in fruit and the specificity of those enzymes, as well as to identify and show the susceptibility of enzymes to certain environmental factors (temperature and pH) originating in the enzyme's...
Curated OER
Separation of Unknowns in a Liquid
Learners identify chromatography as method of separating the components of a liquid. Students discover that dyes are composed of more than one component in achieving a particular color in these lessons on paper chromatography.
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SEPARATION OF A STARCH-GLUCOSE MIXTURE USING GEL FILTRATION
High schoolers make a starch-glucose solution and pour it through gel in order to separate the starch from the glucose. They examine how starch is a larger molecule than glucose and test for the presence of these substances using other...
Curated OER
Mixtures
In this mixtures pre-lab worksheet, students compare and contrast suspensions and colloids and solutions and colloids. Students describe the Tyndall effect. This worksheet has 10 short answer questions.
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Solutions, Suspensions, and Colloids
In this solutions, suspension, and colloids worksheet, young scholars answer questions as it relates to their reading information about solutions, suspensions, and colloids. Students observe different examples and complete a chart as...
Curated OER
Paper Chromatography
Students participate in an experiment determining how to separate a mixture of dyes in water-soluble ink.
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Straw Chromatography
Students become acquainted with the principles of liquid chromatography and construct a liquid chromatography column. Students also investigate the effects of different solvents and solvent concentrations in the separation process.
Curated OER
Separation of Unknowns in a Liquid
Students identify the different components of a given sample using chromatography. In this chemistry activity, students compare paper and column chromatography. They collect data and construct data tables.