Below is an image of a coin in an electrical circuit, connecting a battery to a globe and allowing the globe to light up. Explain how the properties of this coin are suited to this job.

Ateacher gives students four liquids commonly found in the kitchen - vinegar, apple juice, dish detergent, and milk - and ph indicator strips, which measure acidity. the teacher asks the students to put the liquids in order from most acidic to most basic. what type of investigation could the students conduct to determine the correct order for the liquids?