Which procedure would best allow a scientist to observe a chemical property of hydrochloric acid (HCI) solution?
cooling the HCI solution until it becomes solid, and measuring this temperature
adding zinc to the HCl solution and observing whether or not bubbles are produced
placing a conductivity probe into a beaker of HCl solution to determine if it conducts electricity
measuring the mass of and volume of a sample of HCl solution to find its density
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