P.E.N. and Bohr

Protons are ​ (a)   , electrons are ​ ​ (b)   , and neutrons are ​ (c)  

• positive
• negative
• neutral

What does the atomic number tell us?

• The number of protons in a atom.

• The number of neutrons in an atom.

• The number of electrons in an atom.

• How many total subatomic particles are in the nucleus of an atom.

What does the atomic mass tell us?

• The number of protons in a atom.

• The number of neutrons in an atom.

• The number of electrons in an atom.

• How many total subatomic particles are in the nucleus of an atom.

How do we find the number of protons in an element?

• By looking at the atomic number
• By looking at the atomic mass

• By subtracting:
  atomic mass - atomic number

• By subtracting:

  atomic number - charge

How do we find the number of neutrons in an element?

• By looking at the atomic number
• By looking at the atomic mass

• By subtracting:
  atomic mass - atomic number

• By subtracting:

  atomic number - charge

How do we find the number of electrons in an element?

• By looking at the atomic number
• By looking at the atomic mass

• By subtracting:
  atomic mass - atomic number

• By subtracting:

  atomic number - charge

Answer explanation

If an atom has a negative charge, which then it...

• ...has more protons than electrons.

• ...has more electrons than protons.

• ...has more protons than neutrons.

• ...has more neutrons than electrons.

• ...has an equal number of protons and electrons

If an atom has a positive charge, which then it...

• ...has more protons than electrons.

• ...has more electrons than protons.

• ...has more protons than neutrons.

• ...has more neutrons than electrons.

• ...has an equal number of protons and electrons

When compared to the neutral atom, to figure out the subatomic particles for a positive ion you should...

• add more protons, since they are positive

• add more electrons, since they are negative

• subtract some protons, since they are positive

• subtract some electrons because they are negative

Answer explanation

What happens if you change the number of protons an element has?

• nothin'

• You change the charge. Now you have an ion.

• THE UNIVERSE COLLAPSES!

• You have a different element, and will lose points on the P.E.N. Game