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Since the beginning of time, humans have used chemical reactions without understanding them. For example, ancient Greek artisans were able to smelt metal, dye fabrics, and make glass. The attempt to transform simple metal into gold and silver was known as alchemy (the forerunner of chemistry as we know it today). By mixing elements, alchemists created chemical reactions which produced new compounds. While alchemists were never able to transform anything into gold or silver, their trails helped shape the science of chemistry. Part of Chemistry: Solved by Sherlock Olmos Series.
(Source: DCMP)
Antimony is a chemical element with the symbol Sb and atomic number 51. A lustrous gray metalloid.
(Source: Library Lyna)
Germanium is a chemical element with the symbol Ge and atomic number 32. It is a lustrous, hard-brittle, grayish-white metalloid.
Cobalt is a chemical element with the symbol Co and atomic number 27.
Zinc is a chemical element with the symbol Zn and atomic number 30.
Molybdenum is a chemical element with the symbol Mo and atomic number 42.
Fermium is a synthetic element with the symbol Fm and atomic number 100.
Tellurium is a chemical element with the symbol Te and atomic number 52. It is a brittle, mildly toxic, rare, silver-white metalloid.
Osmium is a chemical element with the symbol Os and atomic number 76. It is a hard, brittle, bluish-white transition metal.
Iridium is a chemical element with the symbol Ir and atomic number 77. It is a very hard, brittle, silvery-white transition metal.
Beryllium is a chemical element with the symbol Be and atomic number 4. It is a relatively rare element in the universe.
Nobelium is a synthetic element, and thus a standard atomic weight cannot be given. Like all synthetic elements, it has no stable isotopes.
Tantalum is a chemical element with the symbol Ta and atomic number 73. Previously known as tantalium. Tantalum is a rare, hard, blue-gray, lustrous transition metal that is highly corrosion-resistant.
Play with John’s foot and arm to explore when he gets a zap!
(Source: PhET Interactive Simulations)
Demonstrates how to observe and record scientific observations. Concepts and terminology: observation, data, recording, data table, tools, safety, measuring, and graphs.
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.
Technetium is a chemical element with the symbol Tc and atomic number 43. It is the lightest element whose isotopes are all radioactive, none of which is stable other than the fully ionized state of ⁹⁷Tc.
Neodymium is a chemical element with the symbol Nd and atomic number 60. It is a rare-earth element. It is a hard, slightly malleable silvery metal that quickly tarnishes in air and moisture.
Terbium is a chemical element with the symbol Tb and atomic number 65. It is a silvery-white, rare earth metal that is malleable, ductile, and soft enough to be cut with a knife.
Part of the "Chemistry in Action" series. Describes and illustrates the process of chemical bonding through live action footage and animations. Provides an overview of the role atomic structure plays in the process of bonding. Provides examples of how chemical bonding, including ionic bonds, covalent bonds, and metallic bonds, affects the characteristics of matter. Introduces the following terminology: element, atomic structure, energy level, valence electrons, ionic bonds, crystal lattice, covalent bond, and metallic bond.
Showing collections 1 to 3 of 3
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
A collection of simulations from PhET.
A collection containing 15 resources, curated by Charles LaPierre
