History of the Atom - PowerPoint PPT Presentation

totie
history of the atom n.
Skip this Video
Loading SlideShow in 5 Seconds..
History of the Atom PowerPoint Presentation
Download Presentation
History of the Atom

play fullscreen
1 / 4
Download Presentation
History of the Atom
93 Views
Download Presentation

History of the Atom

- - - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

  1. History of the Atom Part I

  2. Democritus 460 BC - Develops the idea for atoms • He pounded up materials in his pestle and mortar until he had reduced them to smaller particles • He determined that everything is made up of smaller, indivisible particles, which he called atoms. • Atoma is greek for indivisible

  3. John Dalton 1803 – Atoms are the fundamental building blocks of matter (5 postulates) • Was fascinated with meteorology and from his work studying gasses, he theorized certain ideas regarding atoms. • There were 5 major concepts in Dalton’s Atomic Theory

  4. Daltons Atomic Theory • All matter is made of indivisible and indestructible atoms • All atoms of a given element are identical in their physical and chemical properties. • Atoms of different elements combine in simple whole-number ratios to form compounds • Chemical reactions consist of the combination, separation, or rearrangement of atoms.