Why are metals good conductors of electricity?
Metals have free electrons that allow electricity to pass through them easily.
Why does copper sulfate turn white when heated?
Copper sulfate loses its water of crystallization upon heating, turning from blue (hydrated form) to white (anhydrous form).
What is the water of crystallization?
Water of crystallization refers to water molecules that are chemically bonded within the structure of a salt. Example: Copper sulfate pentahydrate (CuSO₄·5H₂O)
What is a neutral salt?
A neutral salt is formed from the reaction of a strong acid and a strong base, with a pH close to 7. Example: Sodium chloride (NaCl)
What are salts?
Salts are ionic compounds formed when an acid reacts with a base, typically producing salt and water.
How does pH affect plant growth?
The pH scale measures the concentration of hydrogen ions (H⁺) in a solution, determining whether the solution is acidic, neutral, or basic.
What is the pH of pure water?
Pure water has a pH of 7, which is neutral.
How does a universal indicator work?
A universal indicator changes color depending on the pH of the solution, providing a visual way to determine whether the solution is acidic, neutral, or basic.
What is the pH of a strong acid?
Strong acids have a pH close to 0 (e.g., hydrochloric acid).
What does the pH scale measure?
The pH scale measures the concentration of hydrogen ions (H⁺) in a solution, determining whether the solution is acidic, neutral, or basic.
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