In the 5th cent. B.C. the Greek philosophers Democritus and Leucippus proposed that matter was made up of tiny, indivisible particles they called atom, or in Greek "a-tomos". The reason why they assumed this is because nothing can come from nothing. Around 1803, John Dalton (1766-1844) developed the first useful atomic theory of matter. He imagined the atom as a sphere full of an electrically positive substance mixed with negative electron. Then in 1897, Thompson discovered the first component part of the atom: the electron, a particle with a negative electric charge.
Discovery of the AtomBy the 19th century, technology had advanced greatly and many elements had been discovered to work with. Using the available elements scientist such as John Dalton and Amedeo Avogadro forced them to interact with one another. From these interactions they were able to prove the existence of the atom.
AnswerThat depends on exactly what you mean by "discovered."
Jainism had a concept of small particles similar to atoms in the 6th millennium BC, and either Democritus or his mentor Leucippus (or possibly both together) independently came up with the idea (and the word "atomos", which is Greek for "uncuttable") in the 5th century BC. However, these were essentially lucky guesses; there was no real scientific basis behind them, so saying these people "discovered" atoms is a pretty big stretch.
The best candidate is probably John Dalton, who in the early 19th century proposed (based this time on experiments) that substances were composed of tiny discrete particles, and even assigned relative weight values to several types of these particles. The word Democritus had used was "Englishified" slightly to come up with the modern word "atom" to refer to these particles.
AnswerJohn Dalton was the first who introduced the idea of atom. Atom, the very word, means inseparable or indivisible. Based on that idea in chemistry many laws have been stated such as, law of coservation of mass, law of multiple proportions etc etc.
Ernest Rutherford discovered that atoms have a small, positively charged nucleus at the center, surrounded by electrons in empty space. This nucleus contains most of the atom's mass and is where the protons are located. This model is known as the nuclear model of the atom.
In 1932, James Chadwick discovered the neutron. Neutrons help stabilize the protons in the atom's nucleus. Because the nucleus is so tightly packed together, the positively charged protons would tend to repel each other normally. Neutrons help to reduce the repulsion between protons and stabilize the atom's nucleus. Neutrons always reside in the nucleus of atoms and they are about the same size as protons. However, neutrons do not have any electrical charge; they are electrically neutral.
Ernest Rutherford was the scientist who discovered that atoms have positive charges through his gold foil experiment, which led to the development of the nuclear model of the atom.
He found that the atom was made up of mostly empty space.
Ernest Rutherford was the first scientist to propose that protons reside in the nucleus of an atom, based on his gold foil experiment in 1911. Neutrons were later discovered by James Chadwick in 1932.
chadwick discovered neutral atom
The nuclear atom was discovered by Ernest Rutherford. He did it with a gold foil experiment.
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no
it was discovered by Henry Cavendish <3
Volta discovered that the atom was the true meaniing of freindship Volta discovered that the atom was the true meaniing of freindship
No he did not invent the atom. He merely discovered it.
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an atom
In 1894.
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Dalton discovered the particles that make the atom and the atom itself