Chemistry Revision
- Created by: ed.marsh22
- Created on: 15-12-19 13:34
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- Chemistry
- Bonding
- Covalent
- Bonding between non-metals only
- Sharing of electrons
- Molecules held together by weak intermolecular forces
- Can form giant covalent structures
- Graphite
- Can conduct electricity because it has delocalised electrons
- Made of layers called graphene, held together by weak intermolecular forces
- Fullerenes - Covalent structures made out of the same elements
- Buckminster Fullerene
- A sphere like cage made of carbon
- Buckminster Fullerene
- Diamond
- Fullerenes - Covalent structures made out of the same elements
- Buckminster Fullerene
- A sphere like cage made of carbon
- Buckminster Fullerene
- Fullerenes - Covalent structures made out of the same elements
- Graphite
- H2O
- Ionic
- Bonding between metal and non-metal ions
- An ion is an atom has lost or gained electrons so its outer shell can become full
- Transfer of electrons
- Can conduct electricity when molten or aqueous
- NaCl
- Na+ + Cl-
- Bonding between metal and non-metal ions
- Metalic
- Bonding between metals only
- Metal ions surrounded by a sea of delocalised electrons
- Arranged in tight layers
- Layers are able to slide over each other
- Arranged in tight layers
- Can conduct electricity
- Alloys
- A metallic structure with any other element mixed in
- Metal ions surrounded by a sea of delocalised electrons
- Fe
- Bonding between metals only
- Covalent
- Electrolosis
- The separation of compounds using electricity
- Negative Electrode - Cathode
- Attracts positive ions
- Takes the extra electron(s) making the ion an atom
- Attracts positive ions
- Reduction can also mean the gain of electrons
- OIL RIG
- Oxidation can also mean the loss of electrons
- OIL RIG
- Positive Electrode - Anode
- Attracts negative ions
- Gives extra electron(s) to the ion making it an atom
- Attracts negative ions
- Oxidation can also mean the loss of electrons
- Negative Electrode - Cathode
- Uses a large amount of electricity
- The separation of compounds using electricity
- The Reactivity Series
- Most reactive - little energy required to lose outer electrons
- Least reactive - more energy requires to lose outer electrons
- Redox Reactions
- Oxidation - the gain of oxygen
- Reduction - the loss of oxygen
- 4Fe + 3O2 -> 2Fe2O3
- Carbon can be used to extract any metal less reactive than carbon from its ore
- Displacement Reaction - when a more reactive element takes the place of a less reactive one
- FeCl2 + Mg -> Fe + MgCl2
- Corrosion is the formation of compounds on the surface of a metal
- Bonding
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