Teach Engineering
Chromatography Lab
Groups use alcohol and chromatography paper to separate the color components of black ink. The purpose of the activity is to allow the class to become aware that mixtures exist in hidden places.
Biology Junction
What Is Ecology?
Do you know the name for the biological study of interactions? A short presentation with accompanying worksheet introduces individuals to ecology. The materials offer a broad overview of the subject and the levels of organization to...
Olomana School
Mixtures and Solutions: Paper Chromatography Experiment
Why does some ink bleed through paper, and other ink doesn't? Practice some paper chromatography to separate the colors from a pen with an interactive experiment for middle and high schoolers. Learners use a variety of solutions to track...
National Nanotechnology Infrastructure Network
Can Small Pollutants Harm Aquatic Organisms?
Nanoparticles have toxic effects on plant and animal life—even though you can't see them. The second instructional activity of a two-part series has young scientists conduct an experiment that exposes plant and animals to nanoparticle...
Beyond Benign
Catalysts and Oxygen
Here is an engaging and hands-on lesson plan that allows high school chemists to demonstrate the effects of a catalyst on various chemicals. They garner knowledge of how reactants and products differ from one another, while...
Teach Engineering
Basically Acidic Ink
If you don't want to drink red cabbage juice, here's another use for it—a decoder! Using vinegar and ammonia-based window cleaning liquids as invisible inks, scholars create designs in the second lesson of the series. Red cabbage juice...
Mr. E. Science
Chemical Reactions
Once I told a chemistry joke, but there was no reaction. Get young chemists involved in changes and reactions with a presentation that begins with physical and chemical changes and chemical reactions. It moves on to chemical...
Beyond Benign
In a Lather
Time to come clean! Scholars continue preparing the shampoo they created in the previous two lessons. The purpose of this stage is to calculate the perfect amount of additive to make the shampoo lather.
National Nanotechnology Infrastructure Network
Lab 2: Nanocatalysts Clean Your Car Emissions
Surface area certainly surfaces as a variable for chemical reaction rates. Scholars perform an experiment to discover how the size of catalysts affect the rate of a chemical reaction. They record their results in tables and graphs to...
American Museum of Natural History
What do you Know About Climate Change?
Test the class's knowledge of the key components of climate change. A 10-question online quiz asks learners about weather, climate, greenhouse gases, and several other concepts related to climate change. Interactive and easy for...
Chicago Botanic Garden
Carbon, Greenhouse Gases, and Climate
Climate models mathematically represent the interactions of the atmosphere, oceans, land, sun, surface, and ice. Part two in the series of four lessons looks at the role greenhouse gases play in keeping Earth warm and has participants...
Curated OER
Household Chemistry
Young scholars use indicator paper to determine if substances are acidic, basic, or neutral. They test for Ph levels in them. They investigate the effect of oxygen on darkening fruit cut and exposed to the air. They observe vitamin C as...
Curated OER
Organic Chemistry-Understanding Organic Reactions
In this organic reactions worksheet, high schoolers are given descriptions of the seven types of reaction of organic compounds. They then answer six questions about these reactions.
Curated OER
Chemical Equilibria and an Introduction to Water Chemistry
In this equilibrium and water chemistry worksheet, students solve twenty problems related to acids and bases, equilibrium and water.
Curated OER
Chromatography of Foods
Students complete a counter top chemistry experiment on the chromatography of foods. The experiment is based upon the relative attraction of the components of the mixture for the mobile phase (water) and the stationery phase (paper).
Curated OER
Chemistry is pHun
Learners investigate the pH of solutions and they learn how to use different types of indicators. For this pH lesson plan, students test various solutions with pH paper and determine if they are acidic, basic or neutral. They also test...
Curated OER
Chemistry 112 Exam 2
In this chemistry worksheet, students solve twenty five multiple choice problems about a variety of chemistry topics. Students answer questions about equilibrium, solubility, reaction rates, titrations, and entropy.
Curated OER
My Type of Mixture
In this mixture worksheet, students fill two test tubes with water and add starch to one and salt to the other. They stir the solutions and observe their appearance. They answer four questions about their mixtures and determine if they...
Curated OER
Food Color Chemistry
Learners investigate plant pigments in fruits and vegetables. In this plant pigments lesson plan, students observe the effects of pH changes on chlorophyll in one demonstration and they observe the effects pH changes on flavonoids in...
Curated OER
Properties of Acids and Bases
Students observe and investigate properties of acids and bases. In this acids and bases lesson plan, students perform 5 different experiments including reactions of acids and metals, reaction of acids with carbonates, neutralization...
Curated OER
The Effects of Temperature Variations on the Heartbeat Rate of Daphnia
Students use DigiScope technology to investigate Daphinia, popularly known as water fleas. They design, conduct, and report on an experiment to determine the effects of varying water temperatures on the heartbeat rate of Daphnia.
Curated OER
Chemistry: Chemical Reaction
In this chemical reactions worksheet, students name the reactants and products, balance the equation, calculate the molecular weight of the reactants and products, and classify each reaction type. Students fill in a table of solubility...
Curated OER
Preparation of Artificial Flavorings and Fragrances
High schoolers prepare artificial flavorings and fragrances. In this esters lesson, students combine an acid and an alcohol of choice to make an ester. Water is released and they produce an artificial flavoring or fragrance. They answer...
Curated OER
Esters: The Secret of Natural and Synthetic Fragrances
Students investigate esters, make an ester and detect esters in natural foods and plants. For this esters lesson plan, students detect smells of hidden objects, produce an ester using peas, brown sugar and apple and demonstrate how to...