Chapter 23 Flashcards
A method for showing the number of valence electrons a substance has.
Electron dot structures
An atom or group of atoms that have a net electric charge.
Ion
An atom that has lost an electron. Typically metals.
Positive ion
An atom that has gained electrons. Halogens.
Negative ion (anion)
Show the charges on an ion.
Superscript numbers
Atoms gain or lose electrons until their valence shell is filled to capacity.
Shell model
How many valence electrons do atoms want?
8
The region where an atom’s valence electrons are located. These are the electrons available for taking part in chemical reactions.
Valence shell
A bond between two oppositely charged ions created by electric charges.
Ionic Bond
A compound created by ions. (2NaCl)
Ionic compound
An ion composed of more than one atom. NO-3
Polyatomic ion
A chemical bond between atoms that share electrons.
Covalent bond
Compound held together by covalent bonds. CO2
Covalent compound
