1 / 17

What is today about ?

What is today about ?. METAL. LO : Describe the structure of metals (D) Explain how metals form bonds (C) Explain why the properties of a metal occur (B) Use the model of metallic bonding to account for the properties of metals (A/A*) Starter Do metals have high or low melting points ?

fergusonjohn
Download Presentation

What is today about ?

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. What is today about ?

  2. METAL LO: Describe the structure of metals (D) Explain how metals form bonds (C) Explain why the properties of a metal occur (B) Use the model of metallic bonding to account for the properties of metals (A/A*) Starter Do metals have high or low melting points ? What does this tell you about the bonding of the atoms ?

  3. 5, 4, 3, 2, 1 • Metal symbols • Metal properties • Magnetic elements • Metals used in jewellery • 1 Metal that is liquid at room temperature

  4. Metal / Non-metal = Ionic Non-metal / Non-metal = Covalent Metal / Metal = Metallic

  5. Metal crystals Metals are made of grains. These grains order themselves to form metal crystals. Steel dipped in zinc is galvanised steel and the crystals are clearly visible.

  6. Metallic Bonding Fixed metal ions Sea of delocalised electrons More electrons in the outer shell = More electrons in the sea This makes the bond even stronger. The metals will have a higher melting point.

  7. Properties

  8. Properties Conduct electricity Conduct heat Shiny appearance Malleable Ductile Sonorous

  9. Metallic Bonding Metallic Bonding

  10. Metallic Bonding Metallic Bonding

  11. Metals are ductile and malleable because the metal ions are free to slide on each other in the sea of delocalised electrons.

  12. Growing Silver Crystals A coil of copper wire is placed into a solution of silver nitrate. The copper displaces the silver. The silver crystals grown on the wire. AgNO3 + Cu  Cu(NO3)2 + Ag

  13. Bonding Summary Bonding Summary

  14. Quiz Quiz

More Related