Bonding misconceptions

Why does sulfur dioxide, SO₂ have a low boiling point?

• It has weak covalent bonds that are easy to break.

• It has weak intermolecular forces that are easy to break.

• easy to break.​

  It has weak electrostatic forces of attraction that are easy to break.

• It has weak ionic bonds that are easy to break.

Why does graphite conduct electricity?

• It has ions that are free to move and carry the charge throughout the structure.

• It has delocalised electrons that carry the charge throughout the structure.

• It has ions and electrons that are free to move and carry the charge throughout the structure.

• It has atoms that are free to move and carry the charge throughout the structure.

Why is diamond hard to break?

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  It has many strong covalent bonds between carbon atoms.

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  It has many strong intermolecular forces between carbon atoms.

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  It has many strong ionic bonds between carbon atoms.

• It has strong electrostatic forces of attraction between oppositely charged ions.

Why does sodium chloride, NaCl have a high melting point?

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  It has strong covalent bonds that are difficult to break.

• It has strong intermolecular forces that are difficult to break.

• It has strong electrostatic forces of attraction that are difficult to break.

• It has strong metallic bonds that are difficult to break.

What happens during the boiling of a simple covalent compound?

• The covalent bonds within each molecule break and atoms move further away from each other. The compound is now in a gaseous state.

• The intermolecular forces break and the molecules move closer to each other. The compound is now in a gaseous state.

• The ionic bonds break and the molecules move away from each other. The compound is now in a gaseous state.

• The intermolecular forces break and the molecules move away from each other. The compound is now in a gaseous state.

Why do ionic compounds conduct electricity when molten or dissolved in solution?

• The ions are free to move.

• The ions and electrons are free to move.

• The electrons are free to move.

• The ions are in fixed positions.

Why is graphite slippery?

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  It has weak covalent bonds between layers allowing the layers to slide over each other.

• It has weak intermolecular forces between layers allowing the layers to slide over each other.

• It has delocalised electrons between the layers.

• It has weak intermolecular forces between carbon atoms.

Where do the electrostatic forces of attraction act in the giant lattice of sodium chloride, NaCl?

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  Between one sodium atom (Na) and one chlorine atom (Cl).

• Between one sodium ion (Na+) and one chloride ion (Cl-).

• Between all neighbouring atoms in all directions.

• Between all neighbouring oppositely charged ions in all directions.

Why do metals conduct electricity?

• There are delocalised electrons which are free to move and carry current.

• There are delocalised ions which are free to move and carry current.

• There are delocalised atoms which are free to move and carry current.

• The electrostatic forces of attraction between atoms are weak.

What is a covalent bond?

• A shared electron.

• A shared pair of electrons.

• When one atom transfers an electron to another atom.

• When electrons are delocalised.