Periodic Table (Atoms) Vocabulary

The electrons found on the outermost energy level or shell of the atom.

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

A mutual electrical attraction between the nuclei and valence electrons of different atoms that binds with the atom together.

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NGSS.MS-PS1-5

The smallest unit of an element that maintains the property of that element.

The mass of an atom of a chemical element expressed in atomic mass units

Negatively charged particles that surround the nucleus

contains electrons and is called the "valence shell" of the atoms

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NGSS.MS-PS1-1

The horizontal rows of the periodic table

The number of protons in the nucleus of each atom of that element.

A positively charged particle found in the nucleus.

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NGSS.MS-PS1-1

It is more than a physical object; it is often an explanation of how phenomena occur and how data or events are related.

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NGSS.MS-ESS1-1

NGSS.MS-ESS2-1

NGSS.MS-LS2-3