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Chromotography
In this chromatography worksheet, students are given markers, filter paper and a solvent to separate the pigments found in each marker. Students create a chromatogram for each marker.
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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.
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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 Electrophoresis of Human Hemoglobin
Students are presented with a scenario that requires them to electrophoreses human hemoglobin samples in order to confirm a diagnosis of sickle cell anemia and/or to determine whether individuals in the scenario are carriers of the...
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Acids, Bases, and Buffers
In this acids and bases instructional activity, learners test the pH of different solutions to determine if it is basic or acidic. Students complete 7 short answer questions based on their results.
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Coloring Fabrics With Dyes from Plant Materials K-12 Experiments & Background Information
Students investigate the effects of acid and bases on dyes made with plant materials. In this chromatography lesson students predict color outcomes and complete a lab activity on color combinations.
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Mixing It Up!
Third graders identify the different states of matter. In this science lesson, 3rd graders describe the different components of solutions and mixtures. They create emulsions, foams and suspensions in the lab.
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Straw Chromatography
Students separate food coloring using liquid chromatography. In this chemistry lesson, students explain the effects of different solvents on the rate of separation.
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Separating a Starch-Glucose Mixture Using Gel Filtration
Students experiment using the basic principles of gel filtration. They use the gel filtration technique for testing for the presence of specific substances. Students discover that starch is a larger molecule than glucose.
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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.
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Chlorophyll
Students use thin layer chromatography, TLC, to separate various pigments found in plants.
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Rainbow Electrophoresis
Students are introduced to the principles of gel electrophoresis and also provides an opportunity for students to practice loading gels and prpetting. In this laboratory activity, food color is used to separate into constituent pigments.
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Chromatography
Students conduct various experiments on chromatography. In this chemistry lesson, students distinguish among the different types of chromatography methods. They explain how the stationary and mobile phase interact with each other.
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Enzymes and Jell-O
Students test for the presence of enzymes in fruit and the specificity of those enzymes. They identify the susceptibility of enzymes to certain environmental factors such as temperature and pH in the enzymes environment.
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Limiting Reagent
Students work in small groups with a small set of 8 nuts and 5 bolts to assemble into combinations of 1 nut: 1 bolt, and 2 nuts: 1 bolt. They explore the outcome and discuss. Then a student mixes two clear, colorless solutions together...
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What is DNA? DNA Extraction from Kiwifruit
Students isolate DNA from kiwi cells, spool DNA from a kiwi, describe role of the DNA and genes, and explain how knowledge of DNA and genes can be used in genetically modifying foods.
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DNA Extraction From Living Things
Students extract DNA from split peas. In this biology lesson, students hypothesize what DNA looks like and perform the experiment to verify their hypothesis. They explain the importance of DNA in living things.
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Paper Chromatography
Students participate in an experiment determining how to separate a mixture of dyes in water-soluble ink.
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Think Green
Students experience and practice compositing and recycling through hands-on-activities. They distinguish between which items from their trash can be recycled, composted and reused. The process for making recycled paper is also covered in...
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What Does That DNA Molecule Really Look Like???
Students extract DNA from animal liver cells. They separate, collect and describe the appearance from the extracted DNA while role playing as an intern in a city's forensics.
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Density
Students work with a partner to record observations on various materials. Working together, they calculate the mass and volume of each material and then combine them and shake them for a period of time. In their journals, they record...
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The Electrophoresis of Human Hemoglobin
Students analyze different types of hemoglobin. They use the technique of agarose gel electrophoresis to separate human hemoglobin molecules according to their electrical charge, size, and/or shape. Students relate the migration of...
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DNA Sequencing Simulation
Students explore the Sanger sequencing method which produces a nested set of radioactive fragments from a template strand. They simulate the Sanger method of sequencing DNA, both visually and kinesthetically.
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DNA Sequencing Simulation
Students simulate the Sanger method of DNA sequencing using color pop-beads as a representation of nucleotides and dideoxynucleotides. Students assemble DNA sequences and run their sequences through a "sequencing gel" and sketch what...