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Real-World Projects: Challenges from the Polymer Industry
Two scenarios are presented for chemistry detectives to decipher. Both require the use of an infrared spectrometer and focus on the examination of polymer materials. In the first, lumps in polyethylene bottles are analyzed. In the...
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Quality Control at Kality Krunchers Dill Pickle Factory
In a hypothetical scenario, food chemists use titration to concoct a brine solution for producing the crunchiest pickles. They also analyze store-bought pickle juices. In addition to reinforcing titration techniques, the lesson requires...
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Using the Spectrophotometer to Analyze a Mixture
General chemistry classes practice spectroscopy. They grasp the relationships between wavelength, absorbance, and solution concentration. Additionally, they gain valuable practice using laboratory equipment such as burets and pipettes....
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Safety Comes First
Here is a thorough instructional activity on safety in the chemistry lab. Chemists review a detailed list of safety rules, draw the layout of the laboratory area to include emergency equipment, identify hazard warnings, and consult the...
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Ecosystems and Remote Sensing
Young scholars obtain remote sensing data to compare and contrast global biomass data with global temperature data.
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Hydrogen Peroxide Analysis
A scenario is presented for chemistry techs to address. Using titration techniques, they must analyze hydrogen peroxide solution samples. They evaluate accuracy and precision in the process. They also gain experience consulting the MSDS...
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The Visible Spectroscopy Expert Witness Problem
In a simulated crime science investigation, chemistry or physics sleuths use spectroscopy to analyze solutions. The lesson gives learners practice making salicylate solutions, using spectrophotometers, calculating dilution amounts,...
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Sorting Plastics For Recycling
First, young chemists practice polymer identification by density and flame tests. With the data collected, they propose a method of separating polyethylene from other plastics and determine what property makes it desirable for recycling....
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The Floating Egg Problem
This is the grown-up version of the classic "float an egg in salt water" experience, plus an experiment in soap making. High schoolers explore density, but more importantly, practice accuracy, precision, and the use of significant...
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Aluminum Adventure
Chemistry aces use an electrochemical cell to anodize a strip of aluminum. They apply an organic dye to it. In a practical application, they design a piece of jewelry out of the anodized metal and describe the process. Thorough notes...
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Programming the "Rinse Robot"
Experienced chemistry technicians use then layer chromatography to discover how much of a free compound is left after each rinse cycle. Where this could obviously be used as a practice with chromatography technique, it can also be used...
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2002 U.S. National Chemistry Olympiad National Exam - Part I
As to be expected from the American Chemical Society Olympiad Examinations Task Force, this 60-question test tops the charts in terms of excellence. It consists entirely of multiple choice questions designed to assess a year's worth of...
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2002 U.S. National Chemistry Olympiad National Exam - Part III
Two laboratory problems are put forth for chemistry students. They are to plan and carry out an experiment that will answer each of the questions. The first asks them to investigate a relationship between the surface area of a potato and...
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Sunspots and Space Weather
This assignment is out of this world! It is an online worksheet about sunspots and solar cycles, a sort of WebQuest if you will. Links to two NASA websites and spaceweather.com are written into the questions so that your aspiring...
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2000 U.S. National Chemistry Olympiad National Exam - Part I
The National Chemistry Olympiad exams are comprehensive tests covering an entire year of chemistry concepts. You can use them as practice for competing in the challenge, or simply as a review, or as an actual final exam for your general...
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Waste Watchers
Learners recognize the importance of saving energy to save natural resources. In this saving energy lesson, students complete a worksheet to find types of electricity meters in their homes. Learners use meter readings to calculate energy...
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Air Pollution: The Issue of Global Warming
Here is an outstanding 10-page lesson plan on global warming. Learners discover that there is a lot of controversy surrounding this topic in that the science behind global warming is difficult to prove. The best thing about this plan is...
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Incomplete Dominant and Codominant Traits Worksheet
A two-page instructional activity provides seven Punnett squares for practice in determining genotypes and phenotypes. Each is an example of incomplete dominance or codominance. After your bright biologists have mastered Punnett squares,...
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Winter-time Temps
Learners measure temperature and become aware the the temperature above and below the snow is different. In this winter temperature lesson, students measure temperatures to find variation based on how the snow is packed. Learners create...
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Meadow Madness
Students explore the evolution from a pond habitat to a meadow. In this habitat lesson, students become familiar with a beaver meadow habitat. Students are aasigned an animal to research and find why the animal best survives in that...
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Native Harvest
Students read Native Plants and Early Peoples and explore the plants in Waterton-Glacier International Peace Park and find how the Native Americans used them. In this Native American plant and people lesson, students research two types...
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Volcanoes: USGS Geography
Students research volcanoes. In this volcanoes unit, students examine components of a volcano, how it is created, what causes it to erupt, and the results of an eruption. There are a series of 6 lessons included in this unit. Students...
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Mystery Eggs
Students investigate the properties of plastic eggs filled with solids, liquids, and gases and use these observations to hypothesize whether a chicken egg is hard-boiled or raw.
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Eggs'ceptional Experiments
Students see evidence of chemical reaction and follow the scientific method to hypothesize, observe, and reach conclusions. They conduct a series of egg based experiments such as forming crystals and complete journal activities as a...