21 Questions
What is the main compound found in sand?
Silicon dioxide
What type of structure does silica (silicon dioxide) have?
Giant covalent structure
Why do substances with giant covalent structures have high melting and boiling points?
They have strong covalent bonds
Which substance is an exception and can conduct electricity among substances with giant covalent structures?
Graphite
According to Coulomb's law, the electrostatic forces holding a salt C+A− together are roughly how many times weaker than C2+A2−?
Four times weaker
How is the lattice energy of a solid crystalline ionic compound calculated using the Born–Landé equation?
As the sum of the electrostatic potential energy and a short-range attractive potential energy term
According to Coulomb's law, the electrostatic forces holding a salt C+A− together are roughly how many times weaker than C2+A2−?
4
What are the two principal factors in determining the form of the lattice in ionic compounds?
Relative charges of the ions and their relative sizes
What term is used to describe the enthalpy change in forming a solid crystalline ionic compound from gaseous ions?
Lattice energy
Which equation can be used to calculate the lattice energy of an ionic compound?
Born–Landé equation
What effect is summarized by Fajans' rules in crystal lattices of purely ionic compounds?
Polarization power effect
According to Coulomb's law, the electrostatic forces holding a salt C+A− together are roughly how many times weaker than C2+A2−?
4 times weaker
What is the term used to describe the enthalpy change in forming a solid crystalline ionic compound from gaseous ions?
Lattice energy
Which equation can be used to calculate the lattice energy of an ionic compound?
Born–Landé equation
What effect is summarized by Fajans' rules in crystal lattices of purely ionic compounds?
Partial covalency effect
What is the main difference between ionic bonding and covalent bonding?
Ionic bonding follows maximum packing rules, while covalent bonding follows VSEPR rules.
According to Coulomb's law, the electrostatic forces holding a salt C+A− together are roughly how many times weaker than C2+A2−?
4
What is the term used to describe the enthalpy change in forming a solid crystalline ionic compound from gaseous ions?
Lattice energy
What effect is summarized by Fajans' rules in crystal lattices of purely ionic compounds?
Polarization power effect
What type of structure does silica (silicon dioxide) have?
Covalent lattice
What are the two principal factors in determining the form of the lattice in ionic compounds?
Relative charges of the ions and their relative sizes
Test your knowledge on substances with many covalent bonds and their structures! Learn about small molecules and giant covalent substances like silicon dioxide. Take the quiz now to see how much you know!
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