* Saltwater: Salt (NaCl) dissolves in water, forming ions (Na+ and Cl-) that can conduct electricity.
* Battery acid (sulfuric acid): Sulfuric acid (H2SO4) dissociates into ions (H+ and SO42-) in solution, allowing current to flow.
* Lemon juice: The citric acid in lemon juice ionizes in water, making it a weak electrolyte.
* Sports drinks: Sports drinks contain electrolytes like sodium, potassium, and magnesium to replenish what's lost during exercise.
* Blood: Blood contains various ions, including sodium, potassium, chloride, and calcium, making it an electrolyte.
* Vinegar: Vinegar contains acetic acid, which ionizes in water, making it a weak electrolyte.
Key takeaway: An electrolyte is a solution that contains ions. These ions allow the solution to conduct electricity.
