Chemical Bonding Flashcards
Define elements
A substance made from one type of atom
Define compound
Substance made from two or more atoms
Properties of ionic structures
They have high melting and boiling points, and conduct electricity when melted or dissolved in water
Properties of covalent structures
Very high melting points - Substances with giant covalent structures have very high melting points, because a lot of strong covalent bonds must be broken. Graphite, for example, has a melting point of more than 3,600ºC. Variable conductivity - Diamond
Properties of metal locally bonded structures
The metallic bond is the force of attraction between these free electrons and metal ions. Metallic bonds are strong, so metals can maintain a regular structure and usually have high melting and boiling points. … The free electrons allow metal atoms to slide over each other, so metals are malleable and ductile.
