dhwshduw Flashcards
Ionic Bonds
The bonding between a metal and a non-metal. The transfer of electrons.
Covalent Bonds
The sharing of electrons between two or more non-metals.
Metallic Bonds
Formed in layers of positive ions with a sea of delocalised electrons. They have giant structures.
Ionic bonds have a high melting point because…
They are formed in a giant lattice and a lot of energy is required to break the electrostatic forces of attraction.
Ionic bonds can’t conduct as a solid because…
Ions are fixed and has no charge.
Ionic bonds can conduct as a liquid because…
Ions can move and carry a charge.
Small covalent molecules have a low melting points because…
Not a lot of energy is required to break the weak intermolecular forces of the molecule.
Small covalent molecules can’t conduct because…
They don’t have a charge.
Metallic bonds have a high melting point because…
They have an electrostatic force of attraction between positive metal ions and electrons.
Metallic bonds are good thermal and electrical conductors because…
The sea of delocalised electrons can carry a charge throughout the material.
Metallic bonds can be shaped because…
The layers can move over each other.
