C2 Metals OCR Gateway (9-1)

  • Created by: Aleena
  • Created on: 09-04-18 19:48
What is the structure of all Metals?
In metals the outer electrons of each atom can move freely. The atoms become positive ions in a 'sea' of delocalised electrons
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What is Metallic Bonding?
The electrostatic attraction between these ions & electrons. The ions are surrounded by the electrons, so the attraction acts in all directions
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Why do metals have high melting and boiling points?
Due to the strong electrostatic attraction between the cations and the negative electrons-which require alot of energy to overcome
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Do metals have a high tensile strength?
yes they have high tensile strength(they're strong & hard to break)
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Metals can be made into wires i.e they can be moulded into different shapes-what do we call this charcateristic?
Malleability
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Why are metals good conductors of heat & electricity?
Because of the sea of delocalised electrons which move freely through the metal, carrying electrical current. They also carry heat energy this way .
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Do metals react with oxygen? If so what are the products?
Most metals react with oxygen to form metal oxides. Most metal oxides are solid at room temperature & form basic solutions when you dissolve them in water
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Can metals make alloys?
Yes
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Why are metals mixed with other elements to make alloys?
Pure metals often aren't quite right for certain jobs. You can change metals properties by mixing them with other elements to make alloys. This can make it more stronger,more malleable or more corrosion resistant
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Other cards in this set

Card 2

Front

What is Metallic Bonding?

Back

The electrostatic attraction between these ions & electrons. The ions are surrounded by the electrons, so the attraction acts in all directions

Card 3

Front

Why do metals have high melting and boiling points?

Back

Preview of the front of card 3

Card 4

Front

Do metals have a high tensile strength?

Back

Preview of the front of card 4

Card 5

Front

Metals can be made into wires i.e they can be moulded into different shapes-what do we call this charcateristic?

Back

Preview of the front of card 5
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