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369

Showing resources 21 to 40 of 369

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  • A large warehouse with a sloping roof. Caption: (narrator) At the Center for Aerosol Impacts

    Sea spray aerosols occur naturally in the salty ocean air, and there’s much more in each of those tiny bursting bubbles than salt. They’re bursting with ocean life, from bacteria to phytoplankton--even viruses. Because sea spray aerosols seed clouds, they affect the climate. With support from the National Science Foundation (NSF), atmospheric chemist Kimberly Prather of the University of California, San Diego, and chemist Vicki Grassian of the University of Iowa are leading a team of scientists around the country who are working to better understand what role sea spray aerosols play in weather and climate change climate models. Part of the National Science Foundation Series “Science Nation.”

    (Source: DCMP)

  • Person in a science lab working with complex machinery. Caption: There is almost no limit to the ways we transmute matter.

    Students will trace the history of chemistry and study accounts of how chemistry developed from a practical discipline into a science. This episode also presents a current, real-life application of chemistry by illustrating the process of the refining and purifying pure silicon for advanced electronics, such as cell phones and solar cells. Part of the Chemistry: Challenges and Solutions Series.

    (Source: DCMP)

  • Diagram of a circuit showing a battery with leads on the positive and negative side and a lightbulb in the middle. Reduction. Caption: During this process, one substance must gain electrons,

    Every portable electronic device is fueled by chemistry, specifically through oxidation-reduction or redox reactions. In redox reactions, one compound gains electrons (reduction) and one compound loses them (oxidation). Chemists can set up reactions so that electrons are forced to move in a certain way to create an electrical current. Metals often play a key role in redox reactions, which are essential to all aspects of chemistry, particularly in many biochemical processes. Part of the series Chemistry: Challenges And Solutions.

    (Source: DCMP)

  • Reactions

    • Video
    A beaker full of murky liquid. Caption: a chemical reaction takes place

    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.

    (Source: DCMP)

  • Friction

    • Simulation
    Screenshot: Phet Simulation - Friction.  Chemistry and Physics textbooks with a blowup of where these books touch eachother and how the atoms interact with eachother as you move the books side to side.

    Grab the Chemistry to play and explore concepts related to friction. Note when using the VoiceOver screen reader with this simulation it is easy to activate VoiceOver's Quick Nav mode while moving the Chemistry book. For the best experience, however, we recommend keeping Quick Nav off.

    (Source: PhET Interactive Simulations)

  • Spheres in a cube, lined up in an alternating positive and negative pattern. Caption: by mutual Columbic attraction in a regular pattern.

    Understanding the interatomic forces that give structure and properties to different types of solids is essential for the creation of new alloys, the development of useful polymers, and the creation of many other kinds of materials. Chemistry is not only an excellent entry point to predicting how a new material behaves but is also a continuous process of innovation and discovery. Part of the series: Chemistry: Challenges And Solutions.

    (Source: DCMP)

  • Geometric illustration of atoms. Caption: So here we've drawn in all the atoms.

    Molecules form when individual atoms create bonds by sharing electrons. Understanding how atoms combine to make molecules allows scientists to predict many of the physical and chemical properties of substances. Since the outermost eight electrons are key to forming compounds, this unit shows how the Octet Rule provides a basis for predicting how atoms may gain, lose, or share electrons to fill the slots in their outer shells. A fundamental understanding of how electrons form bonds leads to the three-dimensional shapes of molecules and has implications in all aspects of chemistry. Part of the series Chemistry: Challenges And Solutions.

    (Source: DCMP)

  • Person in a science lab. One beaker contains an orange liquid, and one beaker contains a green liquid. Caption: It's orange. That means its pH is 5.

    Acids and bases are important to many chemical processes: maintaining a stable internal environment in the human body, baking a delicious cake, or determining whether a lake can support aquatic life. Reactions involving acids and bases can be described through the transfer of protons. The reactions of acids and bases, which can be monitored with indicators, can range from corrosive behavior to neutralizations that leave no acids or bases behind. To understand the controlling of pH of solutions, buffers are discussed in the laboratory and in the chemistry of the bloodstream. Part of Chemistry: Challenges and Solutions Series.

    (Source: DCMP)

  • Plastic tube containing clear, pebble-like objects is attached to a larger tube. Caption: The gas is filling up a constant volume.

    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.

    (Source: DCMP)

  • Two glasses with colored liquid in them. One glass has a person holding a cylindrical electronic device in the liquid. Caption: and check the parts per million of solutes.

    Solutions are uniform mixtures of molecules in which any of the phases of matter can be dissolved in another phase. Whether solids, liquids, or gases, solution chemistry is important because most chemical reactions, whether in the laboratory or in nature, take place in solutions. In particular, solutions with water as the solvent are the core of all biology. Extending the particle model of matter to solutions enables chemists to predict what will happen to a deep-sea diver who breathes different mixtures of gases or to the life forms in the ocean as carbon dioxide levels rise in the atmosphere. Part of Chemistry: Challenges and Solutions Series.

    (Source: DCMP)

  • Silvery metallic orb with iridescent spiky crystals adhering to the bottom. Caption: Iodine crystals are not only interesting

    Chemistry experiments demonstrate four distinct ways to separate chemical mixtures: filtration, crystallization, distillation, and sublimation.

    (Source: DCMP)

  • Person in a lab coat and gloves pointing something out on a small white object. Caption: A lot of the science is a gradual progression,

    Chemist Jon Wilker discusses some of his latest chemistry projects.

    (Source: DCMP)

  • Glass container labelled as CaC2 with a gray, rocky substance sitting among other scientific instruments. Caption: has the chemical name "calcium carbide."

    Focuses on organic chemistry experiments that demonstrate the preparation and properties of ethanol. Additional experiments review ethyne (acetylene), and naphthalene.

    (Source: DCMP)

  • A conveyor belt moves rows of light colored, flat, and round objects at a high speed. Caption: but a lot of support goes into making a good product,

    Meet a food scientist who overcame his fear of chemistry, and now conducts experiments with vegetables. Part of the "Career Connections" series.

    (Source: DCMP)

  • Hydrogen

    • Video
    Narrow curving tube exits into a wider tube. Both are underwater. Caption: whether hydrogen has a higher or lower density than air.

    Demonstrates the production and collection of hydrogen in a chemistry lab, and testing of its purity. Also shows and explains other chemical reactions related to this element.

    (Source: DCMP)

  • Blocks of cheese, loaf of bread, and pickles in a jar. Caption: That's interesting because that's on the nutrition labels.

    A food science professor discusses the chemistry and physics of food preparation and cooking. She also gives an overview of a food science laboratory and its equipment.

    (Source: DCMP)

  • Salts

    • Video
    Beakers labelled 1M KOH, ind. and 1M HCI. Another beaker with a greenish liquid has a tube with a nozzle at the mouth of it. Caption: The neutral solutions will be changed

    Chemistry experiments with salts demonstrate the following: neutralization; neutral, alkaline, and acid solutions; preparing zinc sulfide and sodium chloride; and the formation of ammonium chloride.

    (Source: DCMP)

  • Clear pebble substance in a test tube melting as it is being heated by a flame. Caption: This is called "depolymerization."

    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.

    (Source: DCMP)

  • Two people walking next to rows of industrial tanks with piping and gauges. Caption: planning the scale-up of a new product.

    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.

    (Source: DCMP)

  • Two people in a lab. One is pouring liquid into a beaker. Caption: So let's see what happens here.

    In this episode, Dr. Fus from Ohio State University discusses some of his science experiments. He also explains the chemistry behind some chemical reactions. As a finale, Dr. Fus demonstrates his "elephant toothpaste" experiment.

    (Source: DCMP)

Collections

6

Showing collections 1 to 6 of 6

  • Chemistry

    • Video
    • Image
    • 2.5D Tactile Graphic
    • PDF
    • Text Document
    • Simulation

    A collection of Chemistry related resources

    A collection containing 67 resources, curated by Benetech

  • PhET Simulations

    • Simulation

    A collection of simulations from PhET.

    A collection containing 15 resources, curated by Charles LaPierre

  • Biology

    • Video
    • Image
    • Text Document
    • PDF
    • 2.5D Tactile Graphic
    • 3D Model
    • Audio File

    Biology related concepts

    A collection containing 59 resources, curated by Benetech

  • Anatomy

    • Video
    • Image
    • PDF
    • Text Document
    • 2.5D Tactile Graphic

    Collection of anatomy resources

    A collection containing 21 resources, curated by Benetech

  • Elements

    • Image
    • Text Document
    • 3D Model

    3D models and images of the entire periodic table of elements

    A collection containing 118 resources, curated by Library Lyna

  • Animals

    • Video

    Resources to teach younger students about animals

    A collection containing 58 resources, curated by DIAGRAM Center