Flashcards in Metallic Bonding Deck (14):
Properties and uses of Alumininum
Low density, Used to make electircity pylons, good conducter of electricity
Properties and uses of Copper
Good conducter, Ductile, used for wires and electircal wiring
Properties and uses of Gold
Shiney, used for jewlery
Properties and uses of Steel
Very Strong, dense, used for building structures
what are the Properties of Metals?
-De-localised electrons between organised and equal layers of positive metal ions
-Conductor of Electircty-The delocalised electrons can flow freely meaning the electical cuurent can be transported and conducted
-High melting points- Strong metallic bonds
-Malleable- Layers of ions can slide without breaking the metallic bonds
What is a metallic bond?
- The electrostatic attraction between positivley charged metal ions and delocalised electrons
What do de-localised electrons allow metals to do?
- The delocalised electrons can flow freely meaning the electical cuurent can be transported and conducted
Why do metals have high melting points?
-Becuase they have strong metalic bonds
Why are metals malleable?
- The layers of ions can slide without breaking the metalic bonds
What is an alloy?
-A mixture of metal and at least one other element
Give examples of alloys...
-Brass, steel, bronze
Why are alloys strong?
-They have different sized atoms meaning atoms cant slide as easily so the alloy is stronger
Why is oxygen used in steel production?
-O2 reacts with carbon to make CO2 and Carbon Monoxide which leave the metal and allows you to create steel with the content of carbon desired.