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Diagram of a hydrogen atom. Design modalities for the image include braille with and without labels, print with and without labels in greyscale, color, and texture.
(Source: Benetech)
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)
Hydrogen is the chemical element with the symbol H and atomic number 1. With a standard atomic weight of 1.008, hydrogen is the lightest element in the periodic table.
(Source: Library Lyna)
Lab experiments demonstrate a variety of ways to detect carbon and hydrogen in organic substances. Burns hexane, benzene, cyclohexane, and naphthalene; shows properties of a propane-butane mixture.
Figure 2.27 (OpenStax, Biology 2e) caption: These functional groups are in many different biological molecules. R, also known as R-group, is an abbreviation for any group in which a carbon or hydrogen atom is attached to the rest of the molecule.
(Source: OpenStax)
Host Lisa Van Pay meets with NSF-funded scientists Yang-Shao Horn and Yogi Surendranath at the Massachusetts Institute of Technology as they take on the hydrogen energy challenge.
Officer Tom McCloghry is a cop on the beat, patrolling downtown Columbia, South Carolina to keep the streets safe. And, though it's not so unusual these days to see police on Segways, this one is different. This is a hydrogen hybrid Segway, created with support from the National Science Foundation.
Hydrogeologist Shannon Cook talks about how he entered this field of science and what he does on a daily basis. For this career, be sure to study math, science, and geology. Part of the "Career Connections" series.
Follow the history of hydroelectric energy and explore the process of turning the down flow of water into usable energy. Shows the function of the turbine and water level at the hydroelectric dam, as well as the scale of a dam construction.
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.
These city kids from Boston may not look like conventional farmers, but they’re spending part of their summer getting their hands dirty. They’re learning how to build solar-powered hydroponic systems that grow organic vegetables without soil. With support from the National Science Foundation, Boston College educator Mike Barnett and his team developed the Urban Hydrofarmers Project to engage students in math and science through hydroponic farming and green energy technology. And, because the teens sell what they grow at farmers’ markets, the students get to experience green entrepreneurship. Barnett and his team have also partnered with the STEM Garden Institute to bring hydroponic farming into classrooms throughout the U.S. Part of the National Science Foundation Series “Science Nation.”
In 1977, scientists discovered a diverse community of organisms inhabiting the deep-sea hydrothermal vents of the Pacific Ocean. The sources of energy in these ecosystems are hydrogen sulfide and other inorganic chemicals that are abundant in the water that rises from the vents. Scientists discovered that some animals living near hydrothermal vents, such as the giant tube worm, have a symbiotic relationship with species of bacteria, which allows these animals to survive deep in the ocean. Part of the "I Contain Multitudes" series.
Focuses on organic chemistry experiments that demonstrate the preparation and properties of ethanol. Additional experiments review ethyne (acetylene), and naphthalene.
What is a hydrologist? The researchers in the A to Z Career Lab investigate the roles and responsibilities of hydrologists, and they report their findings to inquisitive students. Part of the "I Can Be Anything I Want to Be A to Z" series.
Figure 2.7 (OpenStax, Biology 2e) caption: Bohr diagrams indicate how many electrons fill each principal shell. Group 18 elements (helium, neon, and argon) have a full outer, or valence, shell. A full valence shell is the most stable electron configuration. Elements in other groups have partially filled valence shells and gain or lose electrons to achieve a stable electron configuration.
Solutions are classified as acidic or basic based on their hydrogen ion concentration relative to pure water. An acidic solution has a higher concentration of hydrogen ions, and a basic solution has a lower concentration of hydrogen ions. Other topics covered include chemical reaction basics, properties of acids and based, acid-base reactions, and other mixtures. Part of the "Chemistry" series.
Figure 2.9 (OpenStax, Biology 2e) caption: Two or more atoms may bond with each other to form a molecule. When two hydrogens and an oxygen share electrons via covalent bonds it forms a water molecule.
The Three Gorges Dam is the largest hydro-electric dam in the world. Yet questions abound over environmental and social issues, not to mention the logistic problems of moving ships up and down the river. An ingenious system of ship locks has gone towards solving that problem, echoing the techniques of Banaue farmers in the Philippines who mastered the art of managing water over two thousand years ago.
Diagram of a basic lipid bilayer. Design modalities for the image include braille with and without labels, print with and without labels in greyscale, color, and texture.
Showing collections 1 to 3 of 3
A collection of Chemistry related resources
A collection containing 67 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
