Ions and Ionic Bonding

Valence electrons are: 

• Electrons farthest away from the nucleus
• Electrons closest to the nucleus
• Electrons that just come and go - they don't stay with the atom

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Ions are: 

• atoms with a positive or negative charge
• atoms with no charge
• atoms with ONLY a positive charge
• atoms with ONLY a negative charge

When an atom loses a valence electron, it becomes a(n) _____________ ion.

• positive
• negative
• neutral
• polyatomic

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Negative ions form when atoms _________ valence electrons.

• lose
• gain
• share

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an atom with atomic number 6 would have how many protons 

• 6
• 12
• 3
• cannot be determined 

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Barium atoms want to form...

• an anion
• a cation
• an onion
• a cuddly kitten friend

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An Arsenic atom wants to form...

• An anion
• A cation
• An onion
• A cuddly kitten friend

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Why are ions formed?

• To make our lives difficult
• Because atoms want 8 valence electrons
• Because atoms have the same number of protons and electrons
• Because atoms gained neutrons

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Cations are...

• Positive
• Negative
• Neutral
• Purring

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NGSS.HS-PS1-2

Anions are...

• Positive
• Negative
• Neutral
• Crying