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Very little in the physical world around us occurs without chemical reactions being involved. Takes an in-depth look at five common products that are in use all around us. Also, explores the chemistry behind their manufacture and/or use, including chemical equations. The products are soap, polystyrene, aluminum, paint, and car batteries.
(Source: DCMP)
Anita Kalathil shows some of the latest chemistry projects taking place at Proctor & Gamble and what her typical day is like inside and outside the lab. Find out what it’s like to be a chemical engineer.
Explore some properties of water with Petunia and Pinky. It's all about those hydrogen bonds. Terms discussed include adhesion, cohesion, surface tension, and specific heat. Part of "The Amoeba Sisters" series.
Some chemical reactions happen spontaneously, like metal rusting. Other reactions are non-spontaneous and need to absorb energy in order to occur. Using the Second Law of Thermodynamics, the principle of entropy, and the calculation of Gibbs free energy, scientists can predict which reactions will occur and vary the conditions to make more of the desired products. In equilibrium reactions, both products and reactants are always present. Equilibrium reactions in the human body are essential for life and can be exploited in chemical manufacturing as well. Part of the series Chemistry: Challenges And Solutions.
Sherlock Olmos decides to dig deeper into dark corner of this great house to investigate the suspicious behavior of some chemical elements. The exchange of electrons and the characteristics of hydrogen, fluorine gas, and the noble gases are the primary subjects of his investigation. Part of Chemistry: Solved by Sherlock Olmos Series.
Deep in Southern Mexico's jungle, the Villa Luz limestone caves support an ecosystem that thrives in a highly poisonous, acidic environment. This rare type of cave is found in few spots on Earth. Geologists and biologists wear gas masks and protective outerwear to explore the caves. All life forms, from microbial colonies to spiders, fish and bats, are interdependent upon the toxic soup of water, sulphur-oxide and hydrogen monoxide for survival.
Chemistry is the science of interacting particles and the various states of matter. Developing a better understanding of the atomic model through experiments with gases, scientists discovered the Ideal Gas Law, developed phase diagrams, and learned about the properties of supercritical fluids. Today's chemists are exploring new ways to control the interactions of atoms, with the goal of making better hydrogen-powered cars and new technologies for the long-term, underground storage of carbon dioxide to reduce greenhouse warming. Part of the series Chemistry: Challenges And Solutions.
From cleaning supplies to pharmaceuticals, surfactants are the compounds that make soap bubbly, paint spread smoothly, and medication dissolve more easily. Most surfactants are currently made from non-renewable petroleum sources and many of these surfactants don’t break down easily after they are discarded. Some can persist in the environment for decades. Their widespread use and environmental persistence has raised concerns about toxicity. At the University of Arizona, Jeanne Pemberton and her cross-disciplinary team work to create new “green” surfactants based on sugars that are generally known as glycolipids. With support from the National Science Foundation, Pemberton and her team are exploring the recent discovery of a versatile synthesis that allows production of many different types of glycolipids in large quantities. Some of these glycolipids are modeled after naturally occurring biosurfactants and some can be produced relatively inexpensively using renewable natural resources. Part of the National Science Foundation Series “Science Nation.”
Part of a series that features a wide variety of video footage, photographs, diagrams, graphics, and labels. For this particular video, students will focus on safety procedures for handling dangerous materials in a lab. Part of the Science Video Vocab series.
A chemical reaction is a process that leads to the chemical transformation of one set of chemical substances to another. Topics covered include precipitation reactions, oxidation-reduction reactions, kinetics, equilibrium, and nuclear reactions. Part of the "Chemistry" series.
Part of the "Chemistry in Action" series. Chemicals interacting with each other are one of the most fascinating topics in chemistry. Fireworks, burning flares, and rusting all illustrate chemical reactions. Describes the different types of reactions as well as the process of balancing chemical equations. Introduces the following terminology: chemical equations, Law of Conservation of Mass, decomposition and synthesis reactions, replacement reactions, and reaction rates.
Part of the "Chemistry in Action" series. Demonstrates how chemical compounds are placed into groups so that they may be studied easier. Explores acids and bases, emphasizing their nature and common everyday uses. Discusses carbon compounds, and introduces the following terminology: acid, base, pH, salt, carbon, organic, and hydrocarbon.
Everyday, real-life examples demonstrate the processes of weathering and erosion. Easy-to-understand examples of weathering help students differentiate between the processes of mechanical and chemical weathering. Footage of weathering and erosion processes help students grasp how each process alters the environment. Important terminology includes: mechanical weathering, landslides, abrasion, freezing, thawing, chemical weathering, oxidation, acid rain, moving water, wind, and glaciers.
A mutagen is any agent (physical, chemical, or biological) capable of altering the structure of DNA within human cells. This program explores how some mutations are a natural process resulting from errors in the copying and repair of DNA and how some mutagens naturally exist in the world (e.g., UV radiation, cosmic rays, and some radioactive isotopes). Others are specific chemicals that have been synthesized for use in manufacturing or other industries. Mutagens may also arise during the metabolism of certain foods. In many cases mutagens may also lead to the development of cancers.
Erbium is a chemical element with the symbol Er and atomic number 68. A silvery-white solid metal when artificially isolated, natural erbium is always found in chemical combination with other elements.
(Source: Library Lyna)
Tungsten, or Wolfram, is a chemical element with the symbol W and atomic number 74. It is a rare metal found naturally on Earth almost exclusively combined with other elements in chemical compounds rather than alone.
Energy comes in many different forms. Real-life examples differentiate between potential and kinetic energy and demonstrate the different forms of energy. This video highlights mechanical, thermal, chemical, electromagnetic, sound, and nuclear energy.
This organic chemistry tutorial is divided into two parts. Part 1, "Selected Derivatives, Hydrocarbons," focuses on the properties of glycerol and phenol; Part 2, "Synthetic Substances," demonstrates properties of polyethylene and the depolymerization of polyethylene.
Experiments feature: (1) halogens as oxidizing agents, (2) bromine reacting with potassium, (3) detecting bromine in compounds, (4) combustion of sulphur and the formation of sulfuric acid, (5) properties of phosphorus, and (6) spontaneous ignition of white phosphorus.
Showing collections 1 to 6 of 6
A collection of Chemistry related resources
A collection containing 67 resources, curated by Benetech
Collection of anatomy resources
A collection containing 21 resources, curated by Benetech
3D models and images of the entire periodic table of elements
A collection containing 118 resources, curated by Library Lyna
Biology related concepts
A collection containing 59 resources, curated by Benetech
A collection of simulations from PhET.
A collection containing 15 resources, curated by Charles LaPierre
Resources to teach younger students about animals
A collection containing 58 resources, curated by DIAGRAM Center
