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  • Crash Course: Chemistry: Solids are Chemicals

    amorphous solids
    crystalline solids
    properties of solids
    solids
    Hank explains that almost everything with which we interact is a chemical. He introduces the different kinds of solids that exist and discusses the different properties that they have.

  • Crash Course: Chemistry: Crystalline Solids

    types of crystalline solids
    properties of crystalline solids
    solids
    Hank discusses the arrangement of the atoms in crystalline solids and how their atomic arrangement differs from amorphous solids. He mentions that each category of solid's atomic arrangement affects its properties, from how it breaks to its appearance. He also describes a couple of types crystalline solids: ionic and molecular.

  • Crash Course: Chemistry: Polymers

    polyethylene
    molecules and compounds
    polymers
    Hank explains polymers, describes some of their properties, and explains how they are formed. He also explains what you need to make a polymer: a molecule that can easily bond to another identical molecule at two points. Hank focuses on the polymer, Polyethylene, because it is the most common plastic in the world, and discusses its nomenclature.