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  • Tips and Tricks Blog
  • Science
    • Biology
      • Natural Selection
    • Chemistry
      • Balancing Chemical Equations
      • Covalent Bonds
      • Energy Diagrams
      • Excited Electrons
      • Flame Test
      • Fusion and Fission
      • Half-Life
      • Heat Transfer
      • Intermolecular Forces
      • Ionic Bonds
      • Isotopes
      • Lewis Dot Structures
      • Matter (Part 1)
      • Matter (Part 2)
      • Organic Chemistry
      • Periodic Table (Part 1)
      • Periodic Table (Part 2)
      • Physical Changes and Chemical Reactions
      • Radioactive Decay
      • Solutions and Separation Methods
      • The Atom
      • What is Chemistry?
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      • Good Research
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Unit 6: What Am I Consuming
6.5: Metals

Picture
Metals are made up of closely packed cations, and the valence electrons look like a sea of electrons which means the valence electrons are mobile and can move freely from one part of the metal to another. Due to this, a metallic bond consists of the free-floating valence electrons that are attracted to the positively charged metal ions. This model explains why metals are:
  • Good conductors of electrical current: electrons can flow freely into them.
  • Ductile (metals can be drawn into wires): When you apply pressure to a metal, the cations can easily slide past one another.
  • High melting/boiling points
  • malleable
Also, metals have 1, 2 or 3 valence electrons, and they will always for cations (positive ions). Check out the following video:
https://youtu.be/eVv3TpaQ2-A
Another term we need to discuss is the term alloy. Metals can be combined to form alloys. Alloys are a mixture of two or more metals. For example,
  • Sterling sliver is 92.5% silver and 7.5% copper
  • Bronze is a mixture of copper and tin
  • Brass is a mixture of copper and zinc
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  • Home
  • Tips and Tricks Blog
  • Science
    • Biology
      • Natural Selection
    • Chemistry
      • Balancing Chemical Equations
      • Covalent Bonds
      • Energy Diagrams
      • Excited Electrons
      • Flame Test
      • Fusion and Fission
      • Half-Life
      • Heat Transfer
      • Intermolecular Forces
      • Ionic Bonds
      • Isotopes
      • Lewis Dot Structures
      • Matter (Part 1)
      • Matter (Part 2)
      • Organic Chemistry
      • Periodic Table (Part 1)
      • Periodic Table (Part 2)
      • Physical Changes and Chemical Reactions
      • Radioactive Decay
      • Solutions and Separation Methods
      • The Atom
      • What is Chemistry?
    • General Science Topics
      • CER
      • Good Research
      • Graphing
      • Lab Equipment
      • Lab Safety
      • Models
      • Scientific Method
    • Labs
    • Veterinary Science
      • Canine
      • Feline
      • Introduction to Veterinary Science
      • Terminology
  • Resources
  • Feedback
  • Copyright and Privacy Policy