6- According to the definition of an acid and the definition ofa base, will the pH increase, decrease, or remain the same whenNaCl is added to pure water? Explain.
7- What is a hydrogen bond? Explain how a hydrogen bondforms.
8- What feature of a soap molecule gives it cleaningability?
9- What ion is responsible for a) acidic properties and b) basicproperties?
10- Explain why a pH of 7 indicates a neutral solution -why notsome other number?
