OCR Chemistry A - 'Bonding and Structure' (2.2.2)

TICK ALL THAT APPLY: What kind of intermolecular forces act between molecules of chlorine, Cl₂?

• London Forces

• Permanent dipole-dipole interactions

• Hydrogen bonds

• Ionic bonds

• Covalent bonds

TICK ALL THAT APPLY: Which of these are present in a sample of gaseous HCl?

• London forces

• Permanent dipole-dipole forces

• Hydrogen bonds

• Ionic bonds

• Covalent bonds

TICK ALL THAT APPLY: Which of these are present in a sample of solid sodium chloride?

• Ionic bonds

• Covalent bonds

• Metallic bonds

TICK ALL THAT APPLY: Which of these are present in a solid sample of ammonium chloride?

• Ionic bonds

• Covalent bonds

• Dative covalent bonds

• Metallic bonds

A substance has a high melting point, conducts electricity when molten or dissolved in solution (but not as a solid), and dissolves in water. What structure and bonding describes this substance?

• Giant covalent lattice

• Simple molecular

• Giant ionic lattice

• Giant metallic lattice

Which part of the periodic table contains with the highest electronegativity?

• Top left

• Top right

• Bottom left

• Bottom right

Which of the molecules is polar?

• BF₃

• CO₂

• H₂

• NH₃

A substance has a low boiling point, does not conduct electricity as solid, liquid or in solution, and does not dissolve in water. Which of the below best describes the substance?

• Giant ionic lattice

• Simple molecular, polar

• Simple molecular, non polar

• Giant covalent

Starting from the lowest, predict the correct order of boiling points for ammonia, water and hydrogen fluoride.

• NH₃ < H₂O < HF

• HF < H₂O < NH₃

• HF < NH₃ < H₂O

• NH₃ < HF < H₂O

Which TWO of the below are attracted to each other in a covalent bond?

• Lone pairs of electrons

• Nuclei of bonded atoms

• Bonding pairs of electrons

• Ions