Isotopes & Ions

Negative ions are called

• Cations
• Electrons
• Anions
• Neutrons

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

Positive ions form when atoms _________ valence electrons.

• lose
• gain
• share
• gain or share

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

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-PS1-1

NGSS.HS-PS1-2

When an atom LOSES an electron it is a

• cation
• anion

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What is the number of protons?

• 34
• 16
• 18
• S

Tags

NGSS.MS-PS1-1

What is the number of neutrons?

• 34
• 79
• 45
• 35

Tags

NGSS.MS-PS1-1

What is the charge on a lithium atom that looses 1 electron?

• +1
• 0
• -1
• -2

Tags

NGSS.MS-PS1-1

What is the net charge on the element shown above? 
(Calcium - atomic number 20)

• cation +1 charge
• cation +2 charge
• anion -1 charge
• anion -2 charge

Tags

NGSS.HS-PS1-1