What is the atom?

Adsense Pub

In the fourth century BC the Greeks established that matter was made up of atoms. Early laboratory work were conducted in the late eighteenth century by the British physicist John Dalton, whose experiences led him to define the atom as indivisible particles that retain their chemical properties. By the late nineteenth century, among other advances, the discovery of the electron allowed to define its structure. The atom consists of protons, electrically charged positively and neutrally charged neutrons. A sheath surrounding the core of electrons, negative charge, which equals the number of protons in the nucleus. The first atomic model was unveiled by the British physicist William Thomson, who explained the stability of matter and its chemical behavior.

The Greek word "atom" means "not divisible." But throughout history it was found that consists of subatomic particles called electrons, protons and neutrons.

What is the lightest atom?

The hydrogen atom is the lightest element that exists, it has only one proton and one electron, and was widely used in scientific experiments.

What are molecules?

The atoms of simple bodies unite to form molecules in compound bodies.

  1. What are amphibians?
  2. The term "amphibian" comes from Greek amphi, both, and bios, life, reveals
  3. biology/what-are-amphibians.htm
  4. How does it the fruit?
  5. The flower is the plant organ that performs the function of reproduction.
  6. biology/how-does-it-the-fruit.htm
  7. About regard the Bible as a sacred book?
  8. For Jews and Christians, the Bible is a collection of sacred books
  9. religion/about-regard-the-bible-as-a-sacred-book.htm
  10. How did primitive man evolve?
  11. The first known human remains are those of Australopithecus, nearly 4.5 million
  12. history/how-did-primitive-man-evolve.htm
  13. What is the theory of relativity?
  14. The theory of relativity was formulated by German physicist Albert Einstein (1879
  15. physics/what-is-the-theory-of-relativity.htm