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"the bonds"
Question | Answer |
---|---|
Valence Electron | electrons with the highest energy levels and are held most loosely |
Polyatomic ion | an ion that is made up of more than one atom |
Ionic Bonds | form as a result of the attraction between positive and negative ions |
Ionic compound | a compound made up of ionic ions |
Properties of Ionic Compounds | Form Brittle crystals, High melting points, Electrical Conductivity |
Form Brittle Crystals | orderly 3 dimensional arrangements of ions |
High melting point | ionic bonds are strong, it takes a lot of energy to brake them. |
Electrical conductivity | when dissolved in water or is in liquid form the compounds provide charged particles and so can conduct currents |
Covalent Bond | the chemical bond formed when two atoms SHARE electrons |
Molecule | a neutral group of atoms joined by covalent bonds |
Covalent Properties | Lower melting and boiling points, do NOT conduct electricity |
Polar Bond | a covalent bond where electrons are shared equally |
Alloy | a mixture of two or more elements where at least one is a metal |
Steel | an iron alloy used because iron rusts by itself |
Metallic Bond | Have positively charged ions in a "sea" of electrons. |