A third type of bonding exists in the simple compounds of metals. In this type of bonding all atoms have donated one or several electrons to the crystal. These electrons do not belong to any particular atom or atoms but to the whole crystal. These electrons are in the interionic space and their behavior resembles that of the gases. The so-called “electronic gas” gives the special properties of the metals.

• Metallic bond. Comparison between different types of bonds
• Properties of metals
• Comparison between different types of bonds
• Simulations
• Problems and tests

Metallic bond. Comparison between different types of bonds

http://207.10.97.102/chemzone/lessons/03bonding/mleebonding/metallicbonding.htm Forming of metallic bond – animated example.

http://mychemistrypage.future.easyspace.com/General/bonding/metallic.htm Structure of a metal: the electrons are given up to a "sea" of electrons that surrounds the metal atoms.

http://schoolchem.com/xa24.htm Schematic representation of the metal structure.

http://www.kings.edu/~chemlab/chemlab_v2/scubic.html Simple cubic metal - animated example.

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Properties of metals

http://www.launc.tased.edu.au/online/sciences/PhysSci/pschem/metals/Metals.htm Hardness of the metal.

http://www.launc.tased.edu.au/online/sciences/PhysSci/pschem/metals/Elecond.htm Electrical conductivity of metals - visualisation.

http://www.launc.tased.edu.au/online/sciences/PhysSci/pschem/metals/Reshape.htm#note

.http://www.launc.tased.edu.au/online/sciences/PhysSci/pschem/metals/Melt.htm High melting temperatures of metals.

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Comparison between different types of bonds

http://www.s-cool.co.uk/ Types of solids and their properties: metals, ionic, molecular, giant molecular.

http://genchem.chem.wisc.edu/sstutorial/FunChem.htm Different types of bonds - click on Bonding, Chemical bonding.

http://www.launc.tased.edu.au/online/sciences/PhysSci/pschem/bondtype/BondTyp1.htm Comparison between covalent, ionic and metallic bonds.

http://www.chem.ufl.edu/~chm2040/Notes/Chapter_11/bond.html Comparison between covalent, ionic and metallic bonds.

http://207.10.97.102/chemzone/lessons/03bonding/dogbonds.htm An amusing visualisation of the bond types.

http://www.chemguide.co.uk/atoms/bonding/shapes.html#top Shape of molecules and ions: BeCl₂, BF₃, CH₄, NH₃, H₂O, NH₄⁺, H₃O⁺,PF₅, SF₆.............

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Simulations

Conductivity apparatus

Metals vs Nonmetals

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Problems and tests

http://www.mcgrawhill.ca/school/booksites/chemistry+12/ Metallic bond.

http://207.10.97.102/chemzone/lessons/03bonding/dogbonds.htm   Comparison of different bonds.

http://www.mynewschool.co.uk/revise4it-home.htm   Comparison of different bonds.

http://www.visionlearning.com/library/science/chemistry-1/CHE1.7-t-bonding.htm   Metallic bond.

http://www.odonel.k12.nf.ca/science/tut-bond/problems.htm Nature of the chemical bond.

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