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8

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  • Nonmetals

    • Video
    A large beaker with a substance in the bottom, a smaller beaker suspended above it. Caption: and yet their properties are so different.

    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.

    (Source: DCMP)

  • 34-Selenium

    • Image
    • Text Document
    • 3D Model
    3D model of the atom Selenium

    Selenium is a chemical element with the symbol Se and atomic number 34. It is a nonmetal.

    (Source: Library Lyna)

  • 16-Sulfur

    • Image
    • Text Document
    • 3D Model
    3D model of the atom Sulfur

    Sulfur is a chemical element with the symbol S and atomic number 16. It is abundant, multivalent and nonmetallic.

    (Source: Library Lyna)

  • 8-Oxygen

    • Image
    • Text Document
    • 3D Model
    3D model of the atom Oxygen

    Oxygen is the chemical element with the symbol O and atomic number 8. It is a highly reactive nonmetal, and an oxidizing agent that readily forms oxides with most elements as well as with other compounds.After hydrogen and helium, oxygen is the third-most abundant element in the universe by mass.

    (Source: Library Lyna)

  • 17-Chlorine

    • Image
    • Text Document
    • 3D Model
    3D model of the atom Chlorine

    Chlorine is a chemical element with the symbol Cl and it has atomic number 17. It has seven electrons in the third outermost shell acting as its valence electrons.

    (Source: Library Lyna)

  • 53-Iodine

    • Image
    • Text Document
    • 3D Model
    3D model of the atom Iodine

    Iodine is a chemical element with the symbol I and atomic number 53. The heaviest of the stable halogens, it exists as a lustrous, purple-black non-metallic solid at standard conditions

    (Source: Library Lyna)

  • Ionic Compound

    • Image
    • 2.5D Tactile Graphic
    • PDF
    • Text Document
    A sodium and a chlorine atom sit side by side. The sodium atom has one valence electron, and the chlorine atom has seven. Six of chlorines electrons form pairs at the top, bottom and right sides of the valence shell. The seventh electron sits alone on the left side. The sodium atom transfers its valence electron to chlorines valence shell, where it pairs with the unpaired left electron. An arrow indicates a reaction takes place. After the reaction takes place, the sodium becomes a cation with a charge of plus one and an empty valence shell, while the chlorine becomes an anion with a charge of minus one and a full valence shell containing eight electrons.

    Figure 2.11 (OpenStax, Biology 2e) caption: In the formation of an ionic compound, metals lose electrons and nonmetals gain electrons to achieve an octet.

    (Source: OpenStax)

  • 6-Carbon

    • Image
    • Text Document
    • 3D Model
    3D model of the atom Carbon

    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)

Collections

2

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  • 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

  • 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