Prep 4G Dec 7 2019

What happens when the sodium atom loses an electron?

• It become negatively charged 
• It become positively charged
• none

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which of the following has a full valence shell?

• Oxygen
• Neon
• Barium
• Carbon

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

An ionic bond forms when atoms ___________ electrons.

• gain
• share
• increase
• transfer

Which type of bond has an equal sharing of electrons?

• Polar Covalent 
• Non Polar Covalent
• Ionic
• Metallic

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

• Polar Covalent 
• Non Polar Covalent
• Ionic
• Metallic

If an atom loses two electrons what charge will it have?

• + 2
•  - 2
• +1
• -1

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

When electrons are shared unequally a/an ___________ bond is formed 

• ionic 
• hydrogen
• polar covalent 
• nonpolar covalent

The bonds in Na₂O are best described as 

• a.  covalent, because valence electrons are shared.
• covalent, because valence electrons are transferred
• ionic, because valance electrons are shared.
• ionic, because valance electrons are transferred. 

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NGSS.HS-PS1-3

Atoms gain or lose electrons to become stable by satisfying this rule.

• Lewis Structure rule
• Periodic Law
• octet rule
• Ionic Law

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NGSS.HS-PS1-2

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