Metallic Bonding Flashcards Preview

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Flashcards in Metallic Bonding Deck (14):
1

Properties and uses of Alumininum

Low density, Used to make electircity pylons, good conducter of electricity

2

Properties and uses of Copper

Good conducter, Ductile, used for wires and electircal wiring

3

Properties and uses of Gold

Shiney, used for jewlery

4

Properties and uses of Steel

Very Strong, dense, used for building structures

5

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

6

What is a metallic bond?

- The electrostatic attraction between positivley charged metal ions and delocalised electrons

7

What do de-localised electrons allow metals to do?

- The delocalised electrons can flow freely meaning the electical cuurent can be transported and conducted

8

Why do metals have high melting points?

-Becuase they have strong metalic bonds

9

Why are metals malleable?

- The layers of ions can slide without breaking the metalic bonds

10

What is an alloy?

-A mixture of metal and at least one other element

11

Give examples of alloys...

-Brass, steel, bronze

12

Why are alloys strong?

-They have different sized atoms meaning atoms cant slide as easily so the alloy is stronger

13

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.

14

Why do impure metals from blast furnaces have few uses?

They become to hard and brittle due to the Carbon