Ions

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

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

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

• positive
• negative
• neutral
• polyatomic

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

If an element has 3 valence electrons, what charge will likely form on its ion ?  Hint:  It will lose those electrons.  What happens to the charge when it loses 3 electrons?

• +3
• +5
• -3
• -5

Tags

NGSS.HS-PS1-1

Nitrogen will ____ valence electrons when forming an ionic bond.

• gain 1
• lose 1
• gain 3
• lose 3

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Ionic bonds form between two ions that have 

• ionic compounds
• negative charges
• positive charges
• opposite charges 

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-3

Atoms that gain & lose electrons are called _________

• ions
• isotopes
• radioactive
• corrosive

Atoms are most stable when their outer shell is filled with electrons.

• true
• false

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What is the charge of an atom that has lost one electron?

• -1
• -2
• +1
• +2

Tags

NGSS.HS-PS1-1

What is the charge of an atom that has gained one electron?

• -1
• -2
• +1
• +2