Chapter 4 Flashcards
Valence Electron
The valence electron of an atom are those electrons that have the highest energy
Electron dot diagram
An electron dot diagram includes the symbol of the element surrounded by dots.
Chemical Bond
A chemical bond is the force of attraction that holds atoms together as a result of the rearrangement of electrons between them.
Ion
An ion is an atom or group of atoms that has an electric charge.
Polyatomic ions
Ions that are made of more than 1 atom are called polyatomic ions
Ionic bond
An attraction between two oppositely charged ions.
Ionic compound
The result of an ionic bond.
Chemical Formula
A chemical formula is a group of symbols that shows the ratio of elements in a compound.
Subscripts
Subscripts tell the ratio of elements in a compound.
Crystal
The ions form a orderly, three dimensional arrangement called a crystal.
Covalent Bond
The chemical bond formed when 2 atoms share electrons.
Molecule
2 bonded fluorine atoms form a molecule.
Double bond
2 atoms share 2 pairs of electrons.
Triple bond
Atoms of some elements, such as nitrogen can share 3 pairs of electrons.
Molecular compounds
A compound made up of molecules.
