by Lauren Lamm
Ionic Bonds - an ionic bond is the bond between a metal and a nonmetal, and occurs when an ion loses one or more of its electrons and shares it with the other molecule. Ionic bonds are soluble and appear in a powdery or granular form. They do not have a low melting point and are only conductive as a liquid or dissolved in water.
Example: NaCl (Sodium Chloride)
Covalent Bonds - covalent bonds share electron pairs between the atoms and include a balance of attractive and repulsive forces between the atoms. Covalent bonds appear as a powdery or granular substance, have a low melting point, are soluble, and do not conduct electricity in any form.
Example: CO2 (Carbon Dioxide)
Metallic Bonds - metallic bonds occur when valence electrons are able to move freely through shared atoms. Metallic bonds are shiny and are not soluble in water. They have a high melting point and are conductive in their solid and liquid forms.
Example: Cu (Copper)