4.0 Chemical Bonds

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What are valence electrons?

Back

Valence electrons are the electrons in the outermost shell of an atom that are involved in forming bonds with other atoms.

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NGSS.HS-PS1-1

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Front

How many valence electrons does a bromine atom have?

Back

7

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NGSS.HS-PS1-1

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Front

What is the chemical formula for aluminum oxide?

Back

Al₂O₃

Front

How many Aluminum atoms are in Al₂O₃?

Back

2

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NGSS.MS-PS1-1

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Front

What is the chemical formula for phosphorus tribromide?

Back

PBr₃

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NGSS.MS-PS1-1

Front

What is ionic bonding?

Back

Ionic bonding involves the transfer of electrons from one atom to another, resulting in the formation of charged ions.

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NGSS.HS-PS1-2

Front

What type of bond is formed between magnesium and oxygen in MgO?

Back

Ionic bond.

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NGSS.HS-PS1-1

Front

What is a covalent bond?

Back

A covalent bond is formed when two atoms share one or more pairs of electrons.

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NGSS.HS-PS1-1

Front

What is the difference between ionic and covalent bonds?

Back

Ionic bonds involve the transfer of electrons and the formation of ions, while covalent bonds involve the sharing of electrons.

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NGSS.HS-PS1-1

Front

What is the significance of the octet rule in chemical bonding?

Back

The octet rule states that atoms tend to bond in such a way that they have eight electrons in their valence shell, achieving a stable electron configuration.

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