chem

• Ions


  Charged atom or molecule where the number of electrons does not equal the number of protons
• Ions


  • Can acquire a positive charge or a negative charge depending on whether the number of electrons is greater or less than the number of protons
• Types of Ions


  • Cation (positively charged ion formed by loss of electrons)
  • Anion (negatively charged ion formed by gain of electrons)
• Cation


  Positively charged ion formed by the loss of one or more electrons by an atom
• Cation


  • Sodium ion (Na+)
• Anion


  Negatively charged ion formed by the gain of one or more electrons by an atom
• Anion


  • Chloride ion (Cl-)
• Chemical Bonds


  Powerful attractions that hold atoms together to form compounds
• Types of Chemical Bonds

  • Ionic bonds
  • Covalent bonds
• Ionic Bonding


  Complete transfer of valence electron(s) between atoms, forming oppositely charged ions
• Covalent Bonding


  Sharing of electron pairs between atoms
• Metallic Bonding


  Sharing of many detached electrons between many positive ions, giving the substance a definite structure