Back to quiz

6. What is the definition for empirical formula?

  • The weighed average mass of an element relative to 12th mass of a carbon atom
  • The simplest whole number ratio of atoms of each element present in a compound
  • Gives the actual number of atoms of each element present in a compound

7. Sodium has 11 electrons. What is its electron arrangement?

  • 1p6, 2s2, 3p6, 4s3
  • 1s2, 2s2, 2p6, 3s1
  • 1s2, 2s2, 3p6,4s1

8. What is the mass of an electron?

  • 1/1840
  • 0
  • 1

9. What is the ideal gas equation?

  • PV=nRT
  • Ps=nTr
  • PV=mRt

10. how many lone pairs of electrons does fluorine have in HF?

  • 3 pairs
  • 2 pairs
  • 1 pair

11. What is positional isomerism?

  • The functional group is attached to the main chain at different points
  • Different functional groups
  • The hydrocarbon is arranged differently

12. What is the product of incomplete combustion of alkanes?

  • Water and carbon dioxide
  • Water and carbon monoxide
  • Carbon monoxide

13. What is co-ordinate/ dative covalent bonding?

  • Bond between two metals
  • One atom provides provides both electrons in a covalent bond
  • Electrostatic attraction beween ions

14. What elements must a hydrogen atom be bonded to to support hydrogen bonding?

  • Nitrogen
  • Bromine, Chlorine, Iodine
  • Nitrogen, Oxygen, Fluorine
  • Fluorine, Chlorine, Oxygen

15. Which is correct? From lowest to highest the strength of the intermolecular forces

  • Hydrogen bonding, Van Der Waals, Permanent dipole - Permanent dipole
  • Van Der Waals, Permanent dipole - Permanent dipole, Hydrogen bonding
  • Permanent dipole - Permanent dipole, Van Der Waals, Hydrogen bonding