Chemical Bonding

Chemical Bonding

• 1.
  Chemical Bonding BY TABASSUMISHRA
• 2.
  Chemical Bonding Chemicals bondsare forces that hold the matter together. There are 3 types chemical bonds: 1. Ionic Bonding 2. Covalent bonding 3. Metallic bonding
• 3.
  Ionic Bonding  Ionicbond is formed by the attraction between oppositely charged ions. Ionic bonds a formed between metals and non-metals.  When non-metals react with metals they gain one or more electrons. The metals give out their electrons so they stick together in a ionic compound.  Ionic bonds stack up in a pattern called crystal lattice.
• 5.
  Ionic Bonding Properties At room temperature they are high melting point solids.  Brittle and hard.  Do not conduct electricity as solids but do conduct dissolved or melted in water.  They dissolve well in water.  Formed between oppositely charged ions and metals and non-metals.
• 6.
  Covalent Bonding  Covalentbonding are formed between non-metals.  If no metals are present to give out their electrons, than the non-metals share their valence electrons with each other.  Intramolecular forces are inside the molecules and holds the atoms together to make the molecule.  Intermolecular forces are attractions between molecules.
• 8.
  Covalent Bonding Properties Have low melting and boiling points  At room temperature, covalent substances are gases, liquid or low melting point solids.  Do not conduct electricity.  Soft.  Don’t dissolve in water.
• 9.
  Metallic Bonding  Metallicbonds are formed between multiple metal atoms.  Are formed by the mutual attraction for each others loosely held electrons.  Most metal atoms have 1 or 2 valence electrons which are not tightly bounded to the ams.  In a piece of metal these valence electrons do not seem to belong to any of the atoms but are able to move freely through the structure from one atom to another.  The metal ions line up in a repeating pattern and the loose electrons act as a electron glue.
• 10.
  Sea of Electrons MetallicBonding
• 11.
  Metallic Bonding Properties High melting points.  Good conductors heat and electricity.  Malleable.  Ductile.  Lustrous.  Solids at room temperature.