Unit 1 Vocabulary Quiz - Atoms, Isotopes & Ions

These are the highly reactive elements located in Group 1 of the periodic table that have 1 valence electron.

• Alkali metals

• Transition metals

• Halogens

• Noble gases

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NGSS.HS-PS1-1

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These are the reactive elements located in Group 2 of the periodic table that have a +2 oxidation number.

• Halogens

• Alkaline earth metals

• Transition metals

• Alkali metals

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NGSS.HS-PS1-1

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On the periodic table, this vocabulary term is the number of protons and electrons in an atom.

• Valence electrons

• Atomic number

• Chemical symbol

• Mass number

A link between two atoms.

• Valence electrons

• Chemical bond

• Atomic number

• Bohr model

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Area outside of the nucleus where you'll most likely find electrons in an atom.

• Nucleus

• Electron cloud

• Orbital shell

• Atom

This is a column on the periodic table of elements.

• Group

• Period

• Valence electron

• Nucleus

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NGSS.HS-PS1-1

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Term that refers to a charged atom.

• Ion

• Isotope

• Neutral

• Nucleus

Atoms of the same element that have the same number of protons, but with varying number of neutrons.

• Ions

• Isotopes

• Valence electrons

• Nucleus

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This is the ROUNDED number that lets us know an estimate of protons and neutrons that are in the nucleus of atoms.

• Atomic number

• Atomic mass

• Mass number

• Chemical symbol

These elements are located on the staircase, and have properties of both metals and nonmetals.

• Metals

• Nonmetals

• Metalloids

• Diatomic elements

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NGSS.HS-PS1-1