Covalent bonding
Storyboard Text
- COVALENT BONDING!
- Non-metals can not transfer electrons, because too many electrons would be transferred. Non-metals have to share electrons.
- o
- C
- o
- o
- c
- Now carbon and oxygen have full outer shells.
- o
- GIANT COVALENT BONDS!!
- Graphite is a giant covalent structure that is made out of only Carbon. It is layers of hexagons, that slide over each other. It can conduct electricity.
- Carbo nanotubes are light weight and strong. It is made out of a thin sheet of graphene. It can conduct electricity due to its delocalised electrons. It could use to make space elevators or cables to space.
- Silicon dioxide, commonly know as glass is a giant covalent structure. It has a high melting point, so you need a lot of heat energy to break it. It contains silicon and oxygen.
- Buckminster fullerene is a giant covalent structure. Its formula is c60. It is made from only carbon and could help cary medicine around the body.
- Diamond is a giant covalent structure. It is only made out of carbon and is used in jewelry and drills. It has a high MP and BP. It does not conduct electricity and has very strong bonds.
- Simple covalent bonds!!!
- PROPERTIES: 1. Not soluble in water2. Doesn't carry charge 3. Low melting and boiling points
- Covalent bonds are strong in 1 direction only. There are weak forces between molecules. molecules are easy to separate.DIAGRAM:
- Strong bonds between molecules.
- Weak intermolecular forces
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