Ionic bonding and structure

• How do you do the formula of ionic compounds?

  You drop and swap
• What is an ionic structure described as?

  Giant lattice
• What are ions?

  Particles that have a different number of protons and electrons.

  They are electrically charged
• How are ions formed?

  When a metal reacts with a non-metal:

  metal atoms- lose electrons to form positive ions

  non-metals- gain electrons to form negative ions
• Why do ionic compounds have a high melting and boiling point?

  It is because it is held together by strong electrostatic forces of attraction between oppositely charged ions