A chemical bond between two atoms created by sharing a pair of electrons, both supplied by one atom. ( ) From the list of words provided, identify the English word for the physical state or the process described by the following sentences: 1. Isotope 2. Atomic (proton) number 3. Mass (nucleon) number 4. Ion 5. Avogadro Constant 6. Mole 7. Molecule 8. Concentration 9. Alkali 10. Salt 11. Cation 12. Anion 13. Hydrated 14. Anhydrous 15. Compound 16. Ionic Bond 17. Covalent Bond 18. Lone pair 19. Dative Covalent Bond (Coordinate) 20. Hydrogen bond 21. Metallic 22. Delocalised 23. Exothermic 24. Endothermic 25. Enthalpy 26. Catalyst 27. Equilibrium 28. Entropy 29. Ligand