Chemical Bonding

What is a valence electron?

• an electron that is found in the outermost shell of an atom.

• an electron found in the innermost shell of an atom.

• an electron found in the middle shell.

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

What is the number of valence electrons for Carbon (Group 14)?

• 1

• 2

• 3

• 4

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NGSS.HS-PS1-1

What is the number of valence electrons for Neon and the other Noble Gases?

• 5

• 6

• 7

• 8

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NGSS.HS-PS1-1

A covalent bond forms when atoms ___________ electrons.

• gain

• share

• increase

• transfer

Which type of bond has a transfer of an electron from on atom to another?

• Polar Covalent 
• Non Polar Covalent
• Ionic
• Metallic

Covalent compounds

• Share electrons
• transfer electrons
• contain a sea of electrons
• conduct electricity

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NGSS.HS-PS1-2

How many valence electrons in this structure?

• 6
• 5
• 4
• 7

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NGSS.HS-PS1-1

Ionic bonding is between a

• nonmetal and nonmetal

• metal and nonmetal

• metal and metal

• Depends on the situation

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NGSS.HS-PS1-2

Which category of elements usually form negative ions?

• metals

• nonmetals

• metalloids

• noble gases

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

Predict the bond between Mg and Cl

• covalent

• ionic

• metallic

• none of the above

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NGSS.HS-PS1-1