Impurities alter the melting and boiling points of substances. Sodium chloride is added to a sample of pure water. How does adding sodium chloride affect the melting point and the boiling point of the water?
- Amelting point increases, boiling point increases
- Bmelting point decreases, boiling point decreases
- Cmelting point increases, boiling point decreases
- Dmelting point decreases, boiling point increases