Bonding Unit Review

Describe the error in this Lewis structure.

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NGSS.HS-PS1-2

NGSS.HS-PS1-3

Draw the Lewis structure for carbon tetrahydride

Draw the Lewis structure for diatomic oxygen

What molecule could this be? 

• BF₃

• CH₄

• H₂O

• CO₂

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NGSS.MS-PS1-1

Which statement describes the energy and bonding changes as two atoms of fluorine become a molecule of fluorine?

• Energy is absorbed as a bond is broken.

• Energy is absorbed as a bond is formed.

• Energy is released as a bond is broken.

• Energy is released as a bond is formed.

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NGSS.HS-PS1-4

The bonds in CO₂ are best described as

• covalent, because valence electrons are shared

• covalent, because valence electrons are transferred

• ionic, because valence electrons are shared

• ionic, because valence electrons are transferred

Tags

NGSS.HS-PS1-1

Which particles may be gained, lost, or shared by an atom when it forms a chemical bond?

• Nucleons

• Protons

• Neutrons

• Electrons

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

Based on your Reference Tables, the atoms of which of these elements have the strongest attraction for electrons in a chemical bond?

• N

• Na

• P

• Pt

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

A barium atom attains a stable electron configuration when it bonds with

• one chlorine atom

• two chlorine atoms

• one sodium atom

• two sodium atoms

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which pair of elements below will form a compound with the greatest ionic character?

• Pb and F

• Ca and O

• Na and Cl

• Cs and N