Atomic Theory

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What is Atomic Theory?

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Atomic Theory is the scientific theory that matter is composed of discrete units called atoms.

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Who proposed the Atomos Theory?

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Democritus proposed the Atomos Theory, suggesting that matter is made up of indivisible particles.

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What did John Dalton contribute to Atomic Theory?

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John Dalton discovered that every element consists of one type of atom that cannot be divided.

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Who discovered the nucleus of an atom?

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Ernest Rutherford discovered the nucleus using the gold foil experiment.

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What is the gold foil experiment?

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The gold foil experiment was an experiment conducted by Rutherford that demonstrated the existence of a small, dense nucleus in the atom.

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What model of the atom did Niels Bohr propose?

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Niels Bohr proposed the Bohr model, which depicts electrons orbiting the nucleus at fixed distances.

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What is an atom?

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An atom is the smallest unit of an element that retains the properties of that element.

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What are the three main subatomic particles?

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The three main subatomic particles are protons, neutrons, and electrons.

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What charge do protons carry?

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Protons carry a positive charge.

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What charge do electrons carry?

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Electrons carry a negative charge.