Periodic Table

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What is the Periodic Table?

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A tabular arrangement of chemical elements, organized by increasing atomic number, electron configuration, and recurring chemical properties.

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What is an element?

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A pure substance that cannot be broken down into simpler substances by chemical means, consisting of atoms with the same number of protons.

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What is an atom?

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The smallest unit of an element, consisting of protons, neutrons, and electrons.

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What are protons?

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Positively charged subatomic particles found in the nucleus of an atom.

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What are neutrons?

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Neutral subatomic particles found in the nucleus of an atom, contributing to the atomic mass.

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What are electrons?

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Negatively charged subatomic particles that orbit the nucleus of an atom.

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What is atomic number?

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

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What is atomic mass?

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The weighted average mass of an element's isotopes, measured in atomic mass units (amu).

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How do you calculate the number of neutrons in an atom?

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Number of Neutrons = Atomic Mass - Atomic Number.

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What is a chemical symbol?

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A one or two-letter abbreviation used to represent an element on the Periodic Table.