ElementaryEpisodes Episode guide
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Nitrogen
First broadcast in 1998. Nitrogen forms approximately 78% of Earth's atmosphere
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Silicon
First broadcast in 1998. Silicon is used in items from breast implants to computers
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Sodium
First broadcast in 1998. Sodium is a soft metal but highly reactive
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Uranium
First broadcast in 1998. Uranium has a high atomic weight and is more dense than lead
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Carbon
First broadcast in 1998. Carbon is the second most abundant element in the human body
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Iron
First broadcast in 1998. Iron forms the Earth's inner and outer core
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Hydrogen
First broadcast in 1998. Hydrogen is the lightest element on the periodic table
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Helium
First broadcast in 1998. Helium is colourless, odourless, tasteless and non-toxic
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Oxygen
First broadcast in 1998. Oxygen is the most abundant element on Earth
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Gold
First broadcast in 1998. Gold has malleability, ductility and resistance to corrosion
