Ion Formation

What is the force that holds two atoms together?

• chemical bond

• magnetic force

• strong force

• physical bond

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NGSS.HS-PS1-1

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Chemical bonds form by the attraction between ______.

• the charged ends of polar molecules

• positive ions and negative ions

• the nucleus of one atom and the electrons of another atom

• an atom and its own electrons

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NGSS.HS-PS1-1

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Elements tend to react to acquire the stable electron structure of a(n)

• ion

• halogen

• metal

• noble gas

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NGSS.HS-PS1-1

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What is a positively charged ion called?

• anion

• polyatomic ion

• complex ion

• cation

Noble gases are unreactive because they have ______.

• low ionization energies

• high electron affinities

• valence electron configurations of ns2np3

• filled outer energy levels

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

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Elements tend to react to acquire ______.

• a filled outer energy level

• a valence electron configuration of 2s22p6

• eight electrons

• the stable electron structure of a noble gas

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NGSS.HS-PS1-1

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A positive ion forms when an atom ______.

• loses one or more valence electrons in order to transform into a stable noble gas

• loses one or more valence electrons in order to attain a noble gas configuration

• gains one or more valence electrons in order to attain a noble gas configuration

• loses or gains valence electrons in order to attain a noble gas configuration

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

To attain a stable outer electron configuration, nonmetals ______________ one or more electrons.

• lose

• gain

• destroy

• dissolve

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NGSS.HS-PS1-1

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A positively charged ion is called a(n)

• cation

• anion

• lithium

• positron

In terms of electron configuration, a neutral chlorine atom differs from the noble gas argon by _______ valence electron(s).

• 1

• 2

• 3

• 4

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NGSS.HS-PS1-1