C2.3.1 Properties of Ionic Compounds

• What type of particles are formed when electrons are transferred between metals and non-metals in ionic compounds?

  Ions
• Electrostatic attraction is the bonding mechanism in ionic compounds.


  True
• What does the coordination number in ionic compounds refer to?

  Nearest-neighbor ions
• Ionic compounds have high melting and boiling points due to strong electrostatic forces.

  True
• What type of energy is required to overcome the strong ionic bonds in ionic compounds?

  Electrostatic energy
• The coordination number in ionic compounds influences the packing efficiency of the crystal structure.


  True
• The crystal structure of ionic compounds is characterized by a regular, repeating arrangement of cations and anions
• The coordination number in an ionic compound directly influences its packing efficiency.

  True
• Two key factors affecting the melting and boiling points of ionic compounds are the charge and the size
• Higher ion charges in ionic compounds result in stronger ionic bonds and higher melting points.


  True
• How does the size of ions affect the melting and boiling points of ionic compounds?

  Larger ions lower melting points
• Which type of ionic compounds are generally highly soluble in water?

  Small, highly charged ions
• When are ionic compounds good conductors of electricity?

  Molten or in aqueous solution
• Ionic compounds in the solid state are generally poor conductors of electricity.


  True
• In an ionic compound, the metal becomes a cation by losing electrons
• What type of ion does a metal form in an ionic compound?

  Cation
• Ionic compounds are formed by the sharing of electrons between atoms.

  False
• An example of an ionic compound is NaCl
• Metals lose electrons to form cations in ionic compounds.

  True
• Larger ions in ionic compounds have weaker ionic bonds and lower melting points.
• What is the melting point of NaCl in degrees Celsius?

  801
• Match the ion properties with their solubility in water:

  Small, highly charged ions ↔️ Highly soluble

  Large, low-charged ions ↔️ Poorly soluble
• Which type of ions in ionic compounds are highly soluble in water?

  Small, highly charged ions
• Why are metallic compounds good conductors of electricity?

  Delocalized electrons
• Ionic compounds are formed by the transfer of electrons between metals and non-metals
• Match the type of compound with its bonding mechanism:

  Ionic ↔️ Electrostatic attraction

  Covalent ↔️ Electron sharing
• The coordination number in ionic compounds influences the degree to which ions are closely packed
• Arrange the following factors affecting the melting point of ionic compounds in order of their effect, from strongest to weakest:

  1️⃣ Charge of the ions

  2️⃣ Size of the ions
• The high melting and boiling points of ionic compounds are due to the strong ionic bonds
• What is meant by the term "packing efficiency" in the context of ionic compounds?

  Degree ions are closely packed
• What does the coordination number in an ionic compound's crystal structure refer to?

  Nearest-neighbor ions
• Why are the melting and boiling points of ionic compounds generally high compared to covalent compounds?

  Strong electrostatic attractions
• The solubility of ionic compounds in water depends on the strength of the ionic bonds and the size
• Polar water molecules can overcome the strong electrostatic attractions in ionic compounds with small, highly charged ions, making them soluble.


  True
• Covalent compounds are poor conductors of electricity because electrons are tightly bound between atoms
• What type of crystal structure do ionic compounds have?

  Regular, repeating arrangement
• Match the compound type with its bonding description:

  Ionic ↔️ Electrostatic attraction

  Covalent ↔️ Sharing of electrons

  Metallic ↔️ Delocalized electrons
• Which of the following is an example of an ionic compound?

  NaCl
• Oppositely charged ions in ionic compounds are held together by electrostatic attractions
• What is the name given to the force that holds ions together in ionic compounds?

  Ionic bond