Ionic compound generally has high melting point due to the strong ionic bond. It is also hard but brittle because repulsion between oppositely charged ions will occur if force is applied. It is soluble in water but insoluble in non-aqueous solvent. It can only conduct electricity when molten or in aqueous solution and undergo chemical decomposition upon conducting electricity.
Answer: The answer is either A or C. I'm leaning more towards A.
This is a physical change.
When the concentration of H+ and OH- are equal, the pH = 7
Since together, the -log [H+] + -log [OH-] must equal 14 for all aqueous systems.
