Q:

Who invented the atom?

A:

Quick Answer

The first scientific experiment that indicated the existence of atoms was performed by John Dalton during the 1800s. These early experiments did not yield information regarding the atom's structure. The structure of atoms was first explained through the discovery of electrons in 1897 by the physicist J. J. Thompson.

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Full Answer

The philosophical idea of an atom was developed by the Greek philosopher Democritus in 460 B.C. The idea of an atom was a result of a question pertaining to the limits of the division of matter. This idea was later dismissed by Aristotle and therefore given no merit by Greek philosophers or individuals.

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Related Questions

  • Q:

    What was one of the incorrect postulates of Dalton?

    A:

    John Dalton's theory regarding atomic theory, published in 1808, incorrectly stated that atoms were the indivisible components of matter. This was later shown to be incorrect when the existence of electrons, protons and neutrons was demonstrated. Dalton was, however, correct in stating that the atom is the smallest particle that is involved in a chemical reaction.

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  • Q:

    When did John Dalton discover the atom?

    A:

    John Dalton did not discover the atom, as it was discovered by Democritus during the Greek era. John Dalton proposed the atomic theory.

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  • Q:

    How do we know atoms exist?

    A:

    Scientists can confirm the existence of atoms using a technique called scanning tunneling microscopy. This is a procedure in which extremely sensitive equipment disturbs a sample at a microscopic level and detects the change in current as electrons of move from atom to atom. Without the existence of atoms, electric current would not exist.

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  • Q:

    What is the difference between ionic and covalent compounds?

    A:

    Ionic compounds are formed when electrons are transferred from one atom to another, while covalent compounds are formed when both atoms share their electrons, resulting in no loss or gain of electrons for either atom, according to HyperPhysics. The atoms of covalent bonds are bound more tightly and form more stable molecules when compared to the atoms of ionic bonds, which show attraction to other nearby atoms.

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