Ions and Isotopes Review Part 2

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

Negative ions form when atoms _________ valence electrons.

• lose
• gain
• share

The positive particles of an atom are 

• electrons 
• positrons 
• neutrons 
• protons 

an atom with atomic number 6 would have how many protons 

• 6
• 12
• 3
• cannot be determined 

the central region of an atom where its neutrons and protons are is its 

• nucleus 
• electron cloud
• core 
• center 

Which particles change the charge in atoms when ions are formed?

• Protons
• Electrons
• Neutrons
• Kittens

An atom becomes _________ when it gains electrons.

• Positive
• Negative
• Neutral
• Invinsible

An atom becomes _______ when it loses electrons.

• Positive
• Negative
• Neutral
• Invinsible

When an element is neutral and electrons = Protons then the element is considered an atom not an ion.

• True

• False

How can you find the overall charge of an ion?

• Protons + neutrons

• Protons - Electrons

• Neutorns + electrons