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...
What affects Frog metamorphosis?
In this lab, students explore pollutants which affect frog metamorphosis using household pollutants (vinegar, oil, and bleach) and sponge capsules.
It's About Time
Mass and Volume
Don't be so dense that light bends around you; study the relationship between mass and volume instead. Young chemists measure the density of a variety of liquids and solids. A reading passage and analysis questions introduce pupils to...
Curated OER
Sour and Bitter: Acids and Bases
Tenth graders distinguish between acids and bases. In this pH lesson plan, 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.
Curated OER
Scientific Method Experiment: Factors Affecting How Ice Melts
Students demonstrate the scientific method by conducting an ice cube melting experiment. They make predictions and observations, and conclude what factors make ice melt more slowly or quickly than normal.
Curated OER
Estimating Heat Changes during Reactions Using Bond Energies
For advanced chemists, this learning exercise examines heat change during chemcial reactions. Alkanes are examined first. Learners calculate the energy released or needed during a reaction.
Curated OER
Blow the Best Bubbles
Here is an exciting, and meaningful science lesson on the formation of bubbles! Young scientists have three cups with a variety of solutions in them. One cup has detergent only, one has glycerin added to it, and the third has corn syrup...
Cornell University
Predicting Chemical Reactions
Prove the Law of Conservation of Mass through a lab investigation. A well-designed lesson asks groups to combine materials and monitor indicators for chemical reactions. Measuring the mass of the reactants and products allows individuals...
Curated OER
Calorimetry Problems
In this calorimetry learning exercise, students complete 30 problems. They calculate the change in heat of a system given the mass and the change in temperature of the system. Students also find the final temperature of a reaction given...
Curated OER
Factors Which Affect Corrosion
Learners investigate the factors which affect corrosion. In this corrosion lesson plan, students experiment with 2 nails, copper wire and magnesium ribbon placed in a petri dish of agar solution, potassium ferricyanate and an indicator....
Curated OER
Vapor Pressure
This extensive collection of slides begins with diagrams of molecules undergoing evaporation, progresses through methods of measuring pressure, demonstrates how to perform pressure calculations, and then explores the temperature-pressure...
Curated OER
Pollution or Prevention?
Students examine potential contamination on the environment due to products and by-products of a new industrial process. Students conduct a lab that explores the economic differences between choices of pollution cleanup and prevention.
Cornell University
Chemical Reactions
Investigate the Law of Conservation of Mass through a lab exploration. Individuals combine materials to initiate chemical reactions. They monitor for signs of reactions and measure the masses before and after the reactions for...
Curated OER
Temperature
Several slides compare different temperature scales. Thermal expansion, heat transfer, and Maxwell speed distribution are also explored. The last two slides seem unrelated to the topic of heat, but are easily left out of this otherwise...
Exploratorium
The Dipping Bird
If you have or want to order the dipping bird demonstration, it is useful for showing how evaporation and changes in the pressure of a closed system cause cyclical motion. After teaching about pressure, consider setting this little guy...
Curated OER
Heating and Cooling Curves
Learners experiment with a pure substance and a phase change. In this heating and cooling curves lesson plan, students study the effects of heating and cooling a pure substance to observe a phase change. They determine both the melting...
Curated OER
Distillation
A sequence of slides that show the apparatus set up for varying practices of distillation. The equipment pieces in each diagram are labeled and their purpose noted. Your class can use these pictures to help set up their own equipment, or...
It's About Time
Identifying Matter
High schoolers test wood splints that have been soaked in mystery solutions to identify the different colors it produces when lit. The lesson concludes with a reading passage and analysis questions.
American Chemical Society
Using Dissolving to Identify an Unknown
There is a solvent called aqua regis that can dissolve gold! After observing a solubility demonstration, groups receive four known crystals and one unknown. Based on the demo, they design an experiment to determine the identity of the...
Curated OER
Nailing Rust
When your upper elementary or middle school class is learning about chemical changes, these activities help demonstrate the concepts. In Part A, they submerge and place a nail partially underwater, then after a week they make...
Curated OER
Acid Rain
Simulated acid rain, a dilute sulfuric acid solution, needs to be prepared for this demonstration. After a condensed lecture on acid rain, you will apply the solution to a sample of granite and a sample of limestone. Your young...
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...
Curated OER
#24 How Much Air Is In Foamed Polystyrene Products?
Students are challenged to come up with a good estimate of the amount of air in foamed polystyrene products. They use this gas evolution experiment and as such have students measure the gas generated when foamed polystyrene is degassed...
Space Awareness
Fizzy Balloons - C02 in School
Carbon dioxide is a very important gas; it is present in the air, used in cooking, and supports plant and animal life. Scholars investigate the properties of carbon dioxide with three different activities. They experience a color change,...
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