Atoms can lose or gain electrons to become Ions!

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Presentation transcript:

Atoms can lose or gain electrons to become Ions! STOP Atoms can lose or gain electrons to become Ions! Ion I’ve got my you!

ION Cation Anion Ion: atom with a plus or a minus charge. Atom with a different number of protons and electrons. two types Cation Cation: an atom with a positive charge. Atom with more protons (+) than electrons (-) Cats have paws….Cations are pawsitive… Anion Anion: an atom with a negative charge. Atom with more electrons (-) than protons (+) A negative ion, looks like onion (make you cry… is negative)

O 8 8 8 +8 -8 Protons:_______ Neutrons:______ Electrons:_____ +1 +1 +1 Oxygen 16 8 8 8 Neutral Oxygen Atom +1 +1 +1 +1 +1 +1 +1 +8 +1 -8 -1 -1 -1 -1 -1 -1 -1 -1

O 8 8 9 O1- O- +8 -9 Protons:_______ Neutrons:______ Electrons:_____ Oxygen 16 8 8 9 O1- O- Charge on this Atom? or +1 +1 +1 +1 +1 +1 +1 +8 +1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -9

O 8 8 10 O2- +8 -10 Protons:_______ Neutrons:______ Electrons:_____ +1 Oxygen 16 8 8 10 O2- Charge on this Atom? +1 +1 +1 +1 +1 +1 +1 +8 +1 -10 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1

Li 3 4 3 2 +3 Li+ Li+1 -2 -3 Protons:_______ Neutrons:______ Electrons:_____ 3 Li Lithium 7 3 4 3 2 If Lithium loses an electron? Neutral Lithium Atom? +1 +1 +1 +3 Li+ or -1 -1 -1 -2 -3 Li+1

All of these atoms have something in common except for one of them All of these atoms have something in common except for one of them. Pick the Odd Man Out and explain why. Ne Na+ O2- F1- N3- Mg Odd Atom Out? Justification?

An atom that has lost an electron. An atom that gained an electron. Cation Anion or Put these in the appropriate Column O2- Li+ An atom that has lost an electron. An atom that gained an electron. Write a mathematical expression for determining the charge on an atom.

#p - #e = charge Protons 9 Electrons 10 Charge Symbol Protons 7 Number of protons minus the number of electrons equals the charge on an atom. #p - #e = charge Protons 9 Electrons 10 Charge Symbol Protons 7 Electrons 10 Charge Symbol Protons 11 Electrons 10 Charge Symbol Protons 13 Electrons 10 Charge Symbol Protons 19 Electrons Charge 1+ Symbol Protons 20 Electrons Charge 2+ Symbol Protons Electrons 18 Charge 2- Symbol Protons Electrons 18 Charge 1- Symbol Protons Electrons Charge Symbol Ba2+ Protons Electrons Charge Symbol Cs1+ Protons Electrons Charge Symbol Br1- Protons Electrons Charge Symbol P3-