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Elementary Episodes

  1.

    Nitrogen

    First broadcast in 1998. Nitrogen forms approximately 78% of Earth's atmosphere

  2. Silicon

    First broadcast in 1998. Silicon is used in items from breast implants to computers

  3. Sodium

    First broadcast in 1998. Sodium is a soft metal but highly reactive

  4. Uranium

    First broadcast in 1998. Uranium has a high atomic weight and is more dense than lead

  5. Carbon

    First broadcast in 1998. Carbon is the second most abundant element in the human body

  6. Iron

    First broadcast in 1998. Iron forms the Earth's inner and outer core

  7. Hydrogen

    First broadcast in 1998. Hydrogen is the lightest element on the periodic table

  8. Helium

    First broadcast in 1998. Helium is colourless, odourless, tasteless and non-toxic

  9. Oxygen

    First broadcast in 1998. Oxygen is the most abundant element on Earth

  10. Gold

    First broadcast in 1998. Gold has malleability, ductility and resistance to corrosion