As you walk into the laboratory, you find a white solid crystal substance labeled as "unknown solid #6." In one paragraph, using your own words, describe tests that could be completed on the substance to determine whether or not it is a salt compound. Please answer this completely and I will mark Brainliest! If you put something random just for the points I will report!!!

Which theory was contradicted by experiments with the photoelectric effect? light spreads out after it passes through a small opening. as soon as light strikes metal, electrons will be ejected. visible light, regardless of color, will cause the ejection of electrons when striking metal. the kinetic energy of ejected electrons depends on the frequency of light that strikes the metal.