Send the link below via email or IMCopy
Present to your audienceStart remote presentation
- Invited audience members will follow you as you navigate and present
- People invited to a presentation do not need a Prezi account
- This link expires 10 minutes after you close the presentation
- A maximum of 30 users can follow your presentation
- Learn more about this feature in our knowledge base article
Do you really want to delete this prezi?
Neither you, nor the coeditors you shared it with will be able to recover it again.
Make your likes visible on Facebook?
Connect your Facebook account to Prezi and let your likes appear on your timeline.
You can change this under Settings & Account at any time.
History of the Atom
Transcript of History of the Atom
Atoms are discovered
J.J. Thompson, an English physicist, discovered negatively charged electrons in his cathode ray experiments
Democritus- Atomic Philosophy
Democritus, a Greek philosopher, suggested the existance of small, indivisible and indestructible pieces of matter, , which he called "atomos"
History of the Atom
John Dalton, an English chemist and schoolteacher, ran experiments and explained his observations of atoms.
Dalton's atomic theory:
1. All elements are composed of tiny indivisible particles called atoms
2. Atoms of the same element are identical.
3. Atoms are not created, destroyed of subdivided.
4. In chemical reactions, atoms of one element combine with atoms of another to form compounds
5. We can tell atoms of different elements apart by mass.
Electrons are discovered
charge of electron
Ernest Rutherford performed his famous 'gold foil experiment, and discovered the nucleus
Electron Cloud Model
Nucleus is discovered
Bohr, a Danish physicist, proposed an electron is found only in specific circular paths, or energy levels
Louis de Broglie- Electrons are wave-like
Erwin Schrodinger, an Austrian physicist, developed a mathematical equation to predict location of an electron
Time-independent Schrödinger equation (general)