electric charge_physics2

Which is most likely to form a negative ion?

• an element from group 17
• a metal
• an element from group 1
• an element with atoms that have eight valence electrons

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

• positive
• negative
• neutral
• polyatomic

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-1

Positive ions form when atoms _________ valence electrons.

• lose
• gain
• share
• gain or share

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-1

Group 17 always has ions with a charge of 

• +1
• +2
• -1
• -2

How many protons are in this element?

• 79
• 196
• 117
• Cannot be determined

Tags

NGSS.MS-PS1-1

What charge does an atom have if it LOSES an electron? 

• Positive (+)
• Negative (-)

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-1

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

What charge does an atom have if it GAINS an electrons?

• Positive (+)
• Negative (-)

Tags

NGSS.HS-PS1-2

What charge will an Oxygen ion have? 

• +1
• -1
• +2
• -2

A positive ion is called a

• cation
• anion