Photo credit: Thomas Phillips — Wikimedia Commons · Public domain
John Dalton
1766–1844 · United Kingdom · Born in the 1700s
Proposed the modern atomic theory, in which each element consists of atoms of a characteristic mass, and stated the law of partial pressures.
Fields
Related topics
Subatomic particles, isotopes, atomic number, mass number
Use proton, neutron and electron counts to identify atoms and ions. Isotopes share an atomic number but have different mass numbers.
Ideal and real gases
How pressure, volume, temperature and amount of gas are linked, and why real gases depart from the ideal law.