Covalent Bonding Lesson

In an electron dot diagram, two pairs of shared electrons represents a

• single bond

• double bond

• triple bond

• quadruple bond

A nitrogen molecule (N2) has one triple bond. How many electrons do the nitrogen atoms share?

• 1

• 3

• 4

• 6

Compared to ionic compounds, molecular compounds generally have

• good conductivity.

• greater densities.

• more chemical bonds.

• a low boiling point.

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NGSS.HS-PS1-3

Covalent bonding involves the ______________________

• transfer of electrons

• sharing of electrons

• losing of electrons

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NGSS.HS-PS1-1

What type of chemical bonds occurs when atoms share electrons?

In chemical compounds, covalent bonds form when

• the electronegativity difference between two atoms is very large.

• electrons are completely transferred between two atoms.

• pairs of electrons are shared between two atoms.

• ions are held together by opposite charges.

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NGSS.HS-PS1-1

Nitrogen has (a)   valence electrons, which means it has ​ (b)   bonding places to make covalent bonds with other nonmetals

• 5

• 3

• 1

• 2

• 4

• 6

• 8

• 7

Tags

NGSS.HS-PS1-1

Match the following

• How lone pair electrons are shown in a dot diagram

• Lone Pair

• Formed between two nonmetals

• Dots

• 2 electrons not shared by atoms in a covalent compound

• Line

• Formed between metal and nonmetal

• Ionic Bond

• How 2 bonding electrons are shown in a dot diagram

• Covalent Bond

Elements need ​​ ​ (a)   valence electrons to become stable when they form compounds, except for hydrogen, which only needs ​ (b)  

• 8

• 2

• 1

• 3

• 4

• 5

• 6

• 7

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Covalent bonds are formed between __________________

• metal and metal

• metal and non-metal

• non-metal and non-metal

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NGSS.HS-PS1-1