Pingry School
Determination of the Molar Mass of an Unknown Acid
Acids and bases have a love-hate relationship. They balance each other so nicely, but they are complete opposites! Learners use these concepts and titration to calculate the molar mass of an unknown substance. The experiment document...
Pingry School
Effect of Solutes on Boiling Point
Anyone that lives around snow knows that adding salts to water increases its melting point. Are there solutes that affect the boiling point as well? A scientific experiment has learners add different solutes to water and then monitor the...
Pingry School
Qualitative Analysis of Eleven Household Chemicals
Chemical and physical properties give compounds an identity. Learners use the identity of a compound to predict what it is. By performing different tests like solubility, flame, heat, and reactions, individuals attempt to identify an...
Curated OER
Bond Energies
Before completing this learning exercise, chemists are supposed read a portion of their textbook. Assign the chapter on bond energies, endothermic, and exothermic reactions. Then have your class answer the questions and fill in the data...
Science Geek
Ionic Compound Formulas
By contrasting cations and anions, this presentation shows how to predict ionic charges by periodic groups. The slides conclude with a few guided practice problems for writing ionic compound formulas.
Science Geek
Percent Composition, Empirical and Molecular Formulas
Help your pupils understand when empirical becomes molecular. The lesson presentation demonstrates the connection between empirical formulas and molecular formulas. Then, given percent composition, the lesson demonstrates the steps to...
Virginia Department of Education
Molecular Model Building
During this hands-on activity, young chemists build molecular models based on the Lewis dot structure before studying valence shell electron pair repulsion theory.
Science Geek
Phase Changes
Examine the energy transfer of phase changes through diagrams. The second slide show in a series of seven presents the information related to energy and phase changes. It includes the effect of pressure on phase changes.
Curated OER
Introduction to Gas Chromatography
Students analyze gas chromatograms and suggest various applications for gas chromatography.
Curated OER
THe Decomposition of Water
Students collaborate in an experiment where they decompose water into simpler substances through the process of electrolysis. They collect, measure, and observe data and then place the data into a table. Accomodations for students with...
Curated OER
Synthesizing Pigment and Dyeing Cloth
Young scholars create a synthetic dye and oxidize the dye and record the effects.
Curated OER
Six Pack Loop Rings Photodegradable?
Students review experiments testing the photo degradability of the six-pack plastic ring and complete further experiments on the process.
Curated OER
Sink or Swim
Students define density and explain how to determine the density of an object. Students participate in a demonstration that shows the differences in the densities of different liquids and how they affect the liquid's physical properties.
Curated OER
Rusting: A Form of Oxidation
Pupils observe and record the corrosive nature of oxidation-reduction reactions, and determine the electro-chemical series of selected metals.
Curated OER
Latex Helium Balloons: Any Alternatives?
Students discuss the latex balloon release controversy and review suggested alternatives to the latex balloon.
Curated OER
Mystery of the Eleven Unknown Substances
Fourth graders identify eleven white substances that are commonly found in the household. They, in pairs, perform experiments on a variety of substances, and must identify them based on the reactions they observe.
Curated OER
Chemical Disasters
Students discuss the importance of safety in the science lab and also in industry. They also will understand some of the implications of chemistry in the world using links provided.
Curated OER
Separating a Starch-Glucose Mixture Using Gel Filtration
High schoolers 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.
Curated OER
Demonstration of Ideal Gas Law
You know that liquid nitrogen turns into a gas at room temperature. Place some in a two-liter bottle for a physics demonstration of the ideal gas law. Beware, however; this is a dangerous demonstration! Not to mention that you may not...
Curated OER
The Energy Debate - Energy of Peanut
Students articulate the difference between the terms heat and temperature. They calculate the amount of energy associated with a given temperature rise and design an experiment to measure the energy of a fuel.
Curated OER
Acids and Bases: Together again!
Learners identify principles behind acid-base reactions. They predict factors that may affect an acid-base reaction. Students identify questions and concepts that guide scientific investigations.
Curated OER
Radioactivity Experiments
Learners study the difference between types of ionizing radiation and how elements are transmuted. They determine that radiation is normal and surrounds us. They calculate the amounts of alpha, beta and gamma radiation emitted from a...
Curated OER
Bhopal - Rate of Reaction
Students determine that the rate of reaction is affected by temperature, surface area, concentration of reagent, and addition of a catalyst or inhibitor. They observe that on December 3rd, 1984, 8000 people died when the chemical plant...
Curated OER
Solutions and Solubility Review
In this solutions and solubility review learning exercise, students are given main ideas about intermolecular forces, concentrations of solutions, molar solutions, ionic equations, solubility rules, acids and bases and titrations....
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