Atomic Theory

Front

What is Atomic Theory?

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Atomic Theory is a scientific theory that states that matter is composed of discrete units called atoms. It explains the nature of atoms, their structure, and how they interact with each other.

Front

What is an isotope?

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Isotopes are variants of a particular chemical element that have the same number of protons but different numbers of neutrons, resulting in different mass numbers.

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What is the atomic number?

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The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.

Front

What is the mass number?

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The mass number is the total number of protons and neutrons in an atom's nucleus.

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What particle has a positive charge?

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Proton.

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What particle has a negative charge?

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Electron.

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What particle has no charge?

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Neutron.

Front

What is the nucleus of an atom?

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The nucleus is the central part of an atom, containing protons and neutrons, and it holds most of the atom's mass.

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What is the electron cloud?

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The electron cloud is the region around the nucleus where electrons are likely to be found.

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What is the Bohr model of the atom?

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The Bohr model describes the atom as having electrons in specific energy levels or orbits around the nucleus.