Bonding Flashcards
Name the five types of bonding
Ionic, Metallic, and covalent. Covalent can be split up into Simple molecular and Giant covalent
How is an ionic bond formed
An ionic bond is a chemical bond formed by the electrostatic attraction between positive and negative ions. The ionic bonds between the charged particles result in an arrangement of ions called a giant structure or giant lattice.
Properties of ionic compounds:
They have a high melting point, as the strong electrostatic forces are hard to break.
They only conduct electricity when they are molten or dissolved in water. This is because is the ions are not free to move.
Properties of simple molecules:
They have a low boiling point because they have weak intermolecular forces (forces between the molecules) so they are easy to break apart.
They do not conduct electricty as there are no ions present
Properties of covalent compounds: Giant structures
They have high melting and boiling points . This is because there is a strong covalent bond, so a lot of energy is required to break them apart.
Apart from graphite, they are hard and do NOT conduct electricity. This is because graphite has delocalised electrons that are free to move.
Graphite is slippery as it has layers of carbon atoms that have weak forces between them, allowing them to slide
What is metallic bonding made of
Metals are giant structures
Metals are a lattice of positively charged ions
The metal ions are arranged in regular layers one on top of the other.
The outer electrons from each metal ion can move freely. This allows metals to conduct electricity
There are strong electrostatic forces of attraction
