5 Structures Flashcards
What is a giant ionic lattice made of?
Non metals + metals
What is a giant metallic structure made from?
Metals
What are simple molecular structures made of?
Non metals + non metals
What are the examples of Macromolecular structures that I need to learn?
Graphite
Graphene
Diamond
Silicon
Silicon dioxide
What are monoatomic structures made of?
Group 0/ Nobel gases
Give a description of the structure of a giant ionic lattice.
A giant ionic lattice is a regular pattern of positive ions and negative ions that are held together by strong electrostatic attractions that require lots of energy to overcome.
Give the structure of a giant metallic lattice.
A giant metallic lattice has layers of positive ions in a sea of delocalised electrons, which are held together by strong electrostatic attractions. These attractions require lots of energy to overcome!
Give a description of a simple molecular substance.
A simple molecular substance has many atoms that are connected by covalent bonds, which form molecules. These molecules are held together by weak intermolecular forces that require less energy to overcome!
Give a description about an example of the macromolecular substance ‘diamond’.
Diamond has a giant macromolecular structure. This means that diamond has 4 very strong covalent bonds for every carbon atom. They are in a fixed structure and lots of energy is required to overcome these very strong covalent bonds.
Give a description about the structure of a monoatomic substance.
A monoatomic structure is made up of group 0 atoms that are held together by very weak interatomic forces. These forces require little energy to overcome.
Why do giant metallic and giant ionic lattices have high boiling/ melting points?
Because there are Strong electrostatic attractions holding the + and - ions (ionic) // + ions and delocalised electrons (metallic) together, that require lots of energy to overcome them!
Why does simple molecular structures have low boiling/ melting points?
Because the molecules are held together by weak intermolecular forces that require little energy to overcome.
Why do monoatomic structures have low boiling/ melting points?
Because the group 0 atoms are held together by weak interatomic forces that require little energy to overcome
Are giant ionic lattices able to conduct electricity?
** only when liquid or aqueous** - as the can carry a charge through a structure.
Are giant metallic structures able to conduct electricity?
yes they can because the delocalised electrons can carry a charge through the structure.
