Chemistry Ionic bonding

• Isotopes- atoms with the same amount of protons but different number of neutrons
• anion


  negative ion
• cation 


  positive ion
• ion- ions are charged particles that have gained or lost electrons, they have a positive or negative charge
• metallic bonding- strong electrostatic attraction between positive metal ions and delocalised electrons
• ionic properties- high melting point, electrostatic attraction between ions is strong
• can dissolve has a positive and negative end ions are attracted to each other
• can’t conduct electricity when solid, but can when molten or dissolved
• metal atoms lose electroms to form positively charged ions
• ionic lattice are held together by strong electrostatic forces
• covalent bonds- two non metallic elements share one or more pairs of electrons
• metal properties: malleable, ductile, good conductor of heat and electricity, good thermal and electrical conductors
• covelast bonds- low boiling point, cannot conduct electricity
• giant structures are formed by covenant bonds linking several atoms together