Name ; _______________________________ Period: _______ Date : ____________________________
Bell work: (a) The electrons in the outermost shell of an atom are called _______________ __________
(b) Atoms that have lost electrons carry a _______________ charge and are called __________________
(c) Alternatively, if a neutral atom gains one or more electrons, it becomes _________________ charged
and is called an _____________________.
(d) In general, metals lose electrons and become _____________ while _______________ gain
electrons and become anions
(e) Chlorine, of the _____________Group has ________________ valence electron.
Work Period: (a) What is an Ion?
(a) An _________ or _____________________that has a positive or negative charge.
(b) Ions form when an atom ____________ or ________electron.
Cation: (c) An atom or group of atoms with a positive charge’
(d) Has the same name as the element that forms them, but different properties.
Anion : (e) An atom or group of atoms with a positive charge.
(f) The name of the anion is the element name with “-ide” on the end.
Element
Sodium Na
Atomic
#
Protons
Electrons Change
Loses an
electron
Calcium Ca
Loses 2
electrons
Hydrogen, H
Gains an
electron
Chlorine, Cl
Gains an
electron
Symbol of ion
Type of Ion /
name
Element
Aluminum Al
Beryllium,
Be
Atomic
#
Protons
Electrons Change
Loses 3
electron
Loses 2
electrons
Oxygen, O
Gains 2
electrons
Bromine, Br
Gains an
electron
Iron, Fe
Iron, Fe
Nitrogen, N
Phosphorous,
P
Loses two
electron
Loses
23electrons
Gains 3
electrons
Gains three
electrons
Symbol of ion
Type of Ion /
name