Chemistry
Every moment of every day, chemistry plays a part in all we experience. This branch of the Helium network humbly attempts to illuminate the vast array of chemical knowledge, making it accessible to all. Let our site inform, inspire, and awe you with chemical wonders.
By: Alison Bowler
Cerium Symbol: Ce Atomic Number: 58 Atomic Mass: 140.116 amu (atomic mass units) Melting Point: 795.0 C (1068.15 K, 1463.0 F) Boiling Point: 3257.0 C (3530.15 K, 5894.6 F) Number of Protons: 58 Number of Electrons: 58 Number...
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By: Alison Bowler
Lanthanum Symbol: La Atomic Number: 57 Atomic Mass: 138.9055 amu (atomic mass units) Melting Point: 920.0 C (1193.15 K, 1688.0 F) Boiling Point: 3469.0 C (3742.15 K, 6276.2 F) Number of Protons: 57 Number of Electrons: 57 Number...
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By: Alison Bowler
Dysprosium Symbol: Dy Atomic Number: 66 Atomic Mass: 162.5 amu (atomic mass units) Melting Point: 1412.0 C (1685.15 K, 2573.6 F) Boiling Point: 2562.0 C (2835.15 K, 4643.6 F) Number of Protons: 66 Number of Electrons: 66 Number...
By: Alison Bowler
Protactinium Symbol: Pa Atomic Number: 91 Atomic Mass: 231.03587 amu (atomic mass units) Melting Point: 1600.0 C (1873.15 K, 2912.0 F) Boiling Point: Unknown Number of Protons: 91 Number of Electrons: 91 Number of Neutrons: 140 Classification: Rare Earth Metal Crystal...
By: Alison Bowler
The Nobel Prize winner Niels Henrik David Bohr was born in Copenhagen, Denmark on October 7 1885. The middle of three children, his father Christian Bohr was the professor of physiology at Copenhagen University and his mother was the daughter of the Jewish politician. He...
By: Alison Bowler
Nobelium Symbol: No Atomic Number: 102 Atomic Mass: 259.0 amu atomic mass units Melting Point: 827 C (1100 K, 1520 F) Boiling Point: Unknown Number of Protons: 102 Number of Electrons: 102 Number of Neutrons: 157 Classification: Rare Earth (Man made) Crystal Structure: Unknown...
By: Alison Bowler
Molybdenum Symbol: Mo Atomic Number: 42 Atomic Mass: 95.94 amu (atomic mass units) Melting Point: 2617.0 C (2890.15 K, 4742.6 F) Boiling Point: 4612.0 C (4885.15 K, 8333.6 F) Number of Protons: 42 Number of Electrons: 42 Number...
Understanding Boyle's Law
By: Ernest Washburn
Boyle's law simply states that the volume of a gas kept at a constant temperature varies inversely with the pressure exerted upon it. In other words as the pressure of a gas increases the volume decreases and vice versa as long as the temperature stays...
By: Alison Bowler
Holmium Symbol: Ho Atomic Number: 67 Atomic Mass: 164.93031 amu (atomic mass units) Melting Point: 1470.0 C (1743.15 K, 2678.0 F) Boiling Point: 2720.0 C (2993.15 K, 4928.0 F) Number of Protons: 67 Number of Electrons: 67 Number...
By: Alison Bowler
Californium Symbol: Cf Atomic Number: 98 Atomic Mass: 251.0 amu (atomic mass units) Melting Point: 900 C (1173 K, 1652 F) Boiling Point: Unknown Number of Protons: 98 Number of Electrons: 98 Number of Neutrons: 153 Classification: Rare Earth Metal (Man-made) Crystal Structure: Unknown...
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