Atomic Timeline/Theory

Front

What is the Bohr Model of the atom?

Back

The Bohr Model describes the atom as having electrons that move in fixed orbits around the nucleus, with each orbit corresponding to a specific energy level.

Front

What is the electron cloud?

Back

The electron cloud is the area surrounding the nucleus of an atom where electrons are likely to be found, representing the probabilistic nature of electron positions.

Front

Who proposed the Atomos Theory?

Back

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

Front

What is the accepted model of the atom today?

Back

The accepted model of the atom today is the Electron Model, which incorporates quantum mechanics and describes electrons in terms of probabilities rather than fixed orbits.

Front

What fundamental elements did Aristotle propose?

Back

Aristotle proposed that the fundamental elements of nature are Earth, Air, Fire, and Water.

Front

What did Rutherford's gold foil experiment demonstrate?

Back

Rutherford's gold foil experiment demonstrated that atoms have a small, dense nucleus at their center, which contains most of the atom's mass.

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What is Dalton's Atomic Theory?

Back

Dalton's Atomic Theory states that all matter is made up of atoms, which are indivisible and indestructible, and that atoms of the same element are identical.

Front

What is the significance of the quantum mechanical model of the atom?

Back

The quantum mechanical model of the atom describes the behavior of electrons in terms of probabilities and wave functions, providing a more accurate representation of atomic structure.

Front

What is the difference between an atom and a molecule?

Back

An atom is the smallest unit of an element, while a molecule is a group of two or more atoms bonded together.

Front

What is an isotope?

Back

An isotope is a variant of a chemical element that has the same number of protons but a different number of neutrons, resulting in a different atomic mass.