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This video explains the vital role elements and compounds play in making up matter. Everyday examples of different types of mixtures help students realize the important role they play in daily life. Other topics covered include elements, compounds, homogeneous and heterogeneous mixtures, colloid, suspension, solution, solvent, and solute.
(Source: DCMP)
Science lab experiments demonstrate what happens visibly and at a molecular level with the Group 1 highly reactive metals and the Group 17 highly reactive halogens from the periodic table. Experiments also illustrate the range of reactivity among metals. Video has three 5-minute segments for convenience.
Sherlock Olmos uses his famous detective skills to solve his mysterious case of how the periodic table is structured. With a touch of humor, he investigates electrons, valences, and the physical and chemical properties of some of the elements. Part of Chemistry: Solved by Sherlock Olmos Series.
Students learn how to differentiate mixtures, solutions, elements, and compounds. Additional concepts and terminology discussed include: element, pure substance, properties, atoms, molecule, compounds, types of mixtures, suspension, colloid, and alloy.
Beginning with Alchemy's attempt to find the recipe for gold, scientists have strived to unearth the basic building blocks of our world. These building blocks became smaller and smaller as scientists including Isaac Newton and Albert Einstein studied the world. From elements, to the atom, to subatomic particles, the study of our natural world has led to inventions both deadly and fantastic, including X-Rays, MRIs, calculus, and the atomic bomb.
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.
Host Trace Dominguez sets out to discover how elements are formed. He elicits help from Dr. Ian O'Neill. During their conversation, they discuss the role that stars play in creating heavy elements throughout the universe.
As scientists discovered more and more chemical elements, they began developing systems to organize the elements by their chemical properties, leading to the modern periodic table. Through its organization, the periodic table makes clear the underlying chemical and physical trends among the elements. The periodic table is being continually updated even today as scientists strive to create new elements in laboratories. Part of the series Chemistry: Challenges And Solutions.
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.
(Source: OpenStax)
Carbon is the basis of all organic molecules. It is also one of the most abundant elements in the universe. This video segment illustrates the special characteristics of carbon that make it an essential ingredient for life.
Part of the "Chemistry in Action" series. Numerous real-life examples of elements are exemplified in the table. Animations and graphics illustrate concepts not easily achieved through other instructional strategies. Specific patterns in the periodic table are highlighted. Introduces the following terminology: atomic structure, atomic number, atomic mass, periods, and families.
Host Emily Graslie meets with James Holstein, the Collection Manager of Meteoritics and Physical Geology, to discuss deadly rocks. Some minerals contain harmful elements that can cause damage through repeated exposure in unregulated environments. Part of "The Brain Scoop" series.
Carbon (from Latin: carbo "coal") is a chemical element with symbol C and atomic number 6. On the periodic table, it is the first (row 2) of six elements in column (group 14), which have in common the composition of their outer electron shell. It is nonmetallic and tetravalent - making four electrons available to form covalent chemical bonds. Three isotopes occur naturally, 12C and 13C being stable while 14C is radioactive, decaying with a half-life of about 5,730 years. Carbon is one of the few elements known since antiquity.
(Source: Library Lyna)
Features different systems of measurement and their value to science in five separate segments. Stardust Elements: Looks at the life cycles of stars and explains how the death of a star seeds the universe with all the elements of the periodic table. End of Dinosaurs: Debates several scientific theories about why and how dinosaurs became extinct. Earthly Thermometers: Demonstrates how the Fahrenheit, Celsius, and Kelvin scales measure the same thing in different ways and why we need precise measurements of temperature. Frozen in Time: Pieces together the past of a 5,300-year-old man whose body was preserved in ice in the Italian Alps. Hurricanes Take the Heat: Follows researchers who study how hurricanes form and try to predict where the next one will strike.
Nobelium is a synthetic element, and thus a standard atomic weight cannot be given. Like all synthetic elements, it has no stable isotopes.
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.
Astatine is a chemical element with the symbol At and atomic number 85. It is the rarest naturally occurring element in the Earth's crust, occurring only as the decay product of various heavier elements.
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.
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3D models and images of the entire periodic table of elements
A collection containing 118 resources, curated by Library Lyna
A collection of Chemistry related resources
A collection containing 67 resources, curated by Benetech
