Curated OER
How to identify a physical change from a chemical change
Pupils identify the difference between some physical and chemical properties and compare some physical and chemical changes. They design an experiment to distinguish between a physical or a chemical property of their choice.
Curated OER
Teaching Avogadro's Number
Students design an experiment to determine Avogadro's number. Students utilize an ammeter, an electrolytic cell and internet research.
Curated OER
How Can we Measure the Rate of a Chemical Reaction?
Learners examine different types of chemical reactions. They explore how alcohol molecules affect the reaction rates. They answer discussion questions to end the lesson.
Curated OER
The Conceptual Theory of Chromatography
Students 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 report on...
Curated OER
How Are The Properties of Covalent Compounds Influenced By Chemical Bonding?
Students work together to observe the bond lengths of single, double and triple bonds. They make their own predictions about the strength of the bonds and chemical reactions. They answer discussion questions to complete the lesson.
Curated OER
Measuring Thermal Energy Transfer
Students conduct an experiment to calculate and quantify heat transfer. They conduct the experiment, and complete a data and lab conclusion sheet.
Curated OER
Investigating the Shapes of Covalent Molecules and Measuring their Respective Bond Lengths and Bond Angles
High schoolers will draw Lewis structures of common covalent compounds using a Chem 3D computer program. They will predict the shapes of the molecules, complete a data table, and formulate rules for predicting shapes of molecules. In the...
Curated OER
The Synthesis of Some Organic Compounds And Their Representative Structures
Students examine how to represent organic compounds three-dimensionally. They write a synthesis reaction for three demonstrations, and construct a three-dimensional structure using a molecular modeling set.
Curated OER
Acid-Base Indicator Paper
Learners are able to prepare and use pH indicators in paper form. They find out the color of the indicator paper plus test solution may change with time. Students use red cabbage to use for the indicator.
Curated OER
Activity #5 Environmental Effects
Students explain the implications of particle theory of The Law of Conservation of Matter for problems of pollution and waste disposal. They describe, in terms of atoms and molecules, what happens to materials when they are dissolved or...
Curated OER
Activity #15 The Snowy Christmas Tree
Middle schoolers weigh out the proper amount of silver nitrate and prepare the silver nitrate solution. They observe what occurs when pure copper is added to silver nitrate solution. Pupils determine whether the change in the appearance...
Curated OER
Activity #18 Decompostion of Baking Soda
Middle schoolers observe what occurs as baking soda is heated. They explain why a chemical rather than a physical change occurred during the procedure. Pupils identify the tpe of reaction (decomposition). Students conduct a glowing...
Curated OER
Activity #19 Oxygen For Yeast
Students observe and record what occurs when yeast is added to hydrogen peroxide. They indicate why a chemical reaction (decompostion) must have occurred during the experiement. Pupils explain why yeast was used. Students comprehend the...
Curated OER
Cabbage Juice Indicator
Students experiment with household solutions and classify them as a base or acid. In this exploratory activity students complete a lab where they test products to see if they are an acid or a base.
Curated OER
Thermoset Polymers
Students complete a lab activity with polymers to allow them to better understand how to make "observations". In this science instructional activity students make measurements and collect data.
Curated OER
Coasts
Learners explain the different types of marine coasts and where they are located in the United States and its territories. They explain and identify some of the life forms that inhabit different marine coastal regions.
Curated OER
Biomes: Coastlines and Seas
Middle schoolers study the different types of coastlines and their territories. In this marine coasts lesson students identify life forms that are in the coastal regions.
American Chemical Society
Using Chemical Change to Identify an Unknown
If you discover an unknown powder, how do you determine if it is safe? Lesson uses four different tests to identify the properties of various powders that appear the same. Then scholars get an unknown powder and have to determine which...
American Chemical Society
Temperature and the Rate of a Chemical Reaction
Putting glow sticks in the freezer makes them last longer, but why is that? Lesson focuses on how temperature impacts the rate of a chemical reaction. It begins with a teacher demonstration, then scholars design their own experiments...
Curated OER
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 instructional...
Forest Foundation
Forests, Carbon & Our Climate
To conclude their examination of forest ecosystems, class members consider the role forests play in the carbon cycle and how forests can offset climate change.
Curated OER
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.
Cornell University
Energy Changes in Chemical Reactions
The heat of solution measures how much thermal energy a dissolving substance consumes or gives off. The experiment demonstrates both endothermic and exothermic reactions. Scholars dissolve several substances, measure the temperature...
Curated OER
Sour and Bitter: Acids and Bases
Tenth graders distinguish between acids and bases. In this pH lesson, 10th graders view a PowerPoint and discuss the characteristics of an acid and a base. They investigate natural substances to determine the pH level of each.
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