Metals
- Created by: Syxxx
- Created on: 12-06-18 20:37
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- Metals
- Reactivity series
- Most reactive-least resistant to oxidation
- Least reactive-most resistant to oxidation
- Bonding in metals
- giant structures
- strong electrostatic forces
- strong attraction between positive metal ions and a sea of delocalised electrons
- electrons in outer shell are lost to form delocalised electrons
- Metallic properties
- good conductors of electricity
- mallable-due to layers of atoms being able to slide
- Extracting metals
- Metals lower than carbon are extracted by reduction
- silver and gold are found as ores
- sacrificial protection
- using a more reactive metal such as mg/zn to protect iron or steel from protection
- used to prevent the rusting of a large steel object eg ships, underground pipes
- Alloy
- Made by adding another element toa metal/non-metal
- different elements have different sized atoms
- hard for layers to slide past eachother
- Steel
- Alloys of iron
- Made by adding small amounts of carbon to pure iron
- low carbon-easily shaped
- high carbon-strong,inflexible,brittle
- stainless steel-corrosion resistant
- steels are harder and stronger than iron
- Reactivity series
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