Tags » Dalton

1811 Avogadro

  • 1st Hypothesis (Avogadro’s Hypothesis) : There is an equal number of molecules in an equal volume of gas under the same temperature and pressure
    • For this hypothesis to be true, the particles have to be tiny and the majority of space has to be void.
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1809 Memoir on the Combination of Gaseous Substances with Each Other

  • Guy-Lussac’s theory on the combination of atoms
  • He believed atoms combined in ratios by volume
  • Get whole number ratios
  • Doesn’t mention caloric, implies belief in the kinetic theory

1808 A New System of Chemical Philosophy

  • This paper communicated Dalton’s atomic theory
  • Each atom is surrounded by a bubble of caloric, separating if from another atom. The more caloric surrounding the atoms, the farther away the atoms are from each other.
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Learning About Atoms

The Science PLC at our school is considering what students should know about atoms in 8th and 9th grade science classes (including Physics First).  Just recently, … 1,204 more words


Writing 101: A Room with a View

Last week I went to a screening of John Hughes’s “The Breakfast Club” to celebrate its 30th anniversary. It was a cinematic time machine to 1985, the year I was a freshman at… 306 more words

Writing 101

Malaysian fish seller to hang for stabbing, killing two British medical students last year on Borneo

The Associated Press

KUALA LUMPUR, Malaysia — A Malaysian court on Tuesday sentenced a fish seller to death for killing two British medical students last year on Borneo island. 321 more words

Gases and their laws

When you’re a pro at these worksheets, you’ll be able to explain how your dog manages to stink up the whole room in a matter of seconds. 160 more words

Practice Worksheets