Properties of ionic compounds

• What is an ionic compound made up of?

  Charged particles called ions
• What type of structure do ionic compounds have?

  A giant lattice structure
• What are the forces of attraction in ionic compounds called?

  Strong electrostatic forces of attraction
• What occurs when a negative ion joins with a positive ion?

  An ionic compound is formed
• What is the arrangement of ions in an ionic substance called?

  A giant ionic lattice
• What do the strong electrostatic forces of attraction in a giant ionic lattice act between?

  Oppositely charged ions
• What explains the properties of ionic compounds?

  The structure and bonding of ionic compounds
• What are the two types of properties of ionic compounds?

  Chemical and physical properties
• What is the state of ionic compounds at room temperature?

  They are in the solid state
• What must happen to a substance to make it melt or boil?

  Energy must be transferred to it
• What do the strong electrostatic forces of attraction between oppositely charged ions require to overcome?

  Energy
• What happens during melting and boiling of ionic compounds?

  Some forces are overcome during melting, all during boiling
• What is the melting point of NaCl?

  801°C
• What is the boiling point of MgO?

  3,600°C
• Why do ionic compounds have high melting and boiling points?

  Because of the strong electrostatic forces of attraction
• What does the strength of ionic bonds depend on?

  The charge on the ions
• What happens to the strength of ionic bonds with higher charged ions?

  They have stronger forces between them
• What is required to conduct electricity in a substance?

  It must contain charged particles
• When can ionic compounds conduct electricity?

  When melted or dissolved in water
• Why can't ionic compounds conduct electricity in the solid state?

  Because their ions are held in fixed positions
• How does the ionic lattice structure affect the properties of ionic compounds?

  • Strong electrostatic forces lead to high melting and boiling points
  • Regular arrangement of ions allows for conductivity when melted or dissolved
  • Fixed positions of ions in solid state prevent conductivity
• What are the properties of ionic compounds?

  • High melting points
  • High boiling points
  • Conduct electricity when melted or in solution
  • Insulators when solid
• What is the state of ionic compounds when they are insulators?

  When solid