Periodic Table

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A subatomic particle that has a negative charge

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Electrons are negatively charged subatomic particles found in the electron cloud surrounding the nucleus of an atom.

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The vertical (up and down) columns in the Periodic Table are called

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Groups are the vertical columns in the Periodic Table, where elements share similar chemical properties.

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A subatomic particle that has a positive charge and that is found in the nucleus of an atom

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Protons are positively charged subatomic particles located in the nucleus of an atom.

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The Modern Periodic Table of Elements is arranged by

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The Modern Periodic Table is arranged by atomic number, which is the number of protons in an atom's nucleus.

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These are found on the Periodic Table.

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Elements are pure substances that cannot be broken down into simpler substances and are listed in the Periodic Table.

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What are neutrons?

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Neutrons are neutral subatomic particles found in the nucleus of an atom, contributing to the atomic mass.

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What is an 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.

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What are periods in the Periodic Table?

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Periods are the horizontal rows in the Periodic Table, indicating the number of electron shells in the elements.

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What are noble gases?

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Noble gases are a group of elements in Group 18 of the Periodic Table that are characterized by their lack of reactivity due to having a full valence shell.

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What is a chemical symbol?

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