Kellie found a sample of a pure element. she carefully studied the sample and made a list of its properties. • silvery metal • solid at room temperature • malleable, ductile • slightly corroded which element did kellie find? a. au b. cl c. si d. fe andrej has been asked to identify an element by determining its wavelength of electromagnetic radiation. which test will andrej conduct to identify the element? a. ph test b. flame test c. buoyancy test d. conductivity test

Astudent is performing an experiment comparing sound and light waves. the student gathers the following data. what conclusion does the student most likely make based on this data? light waves always travel the same speed; however, the speed of sound is determined by the medium that it travels through. all sound waves always have the same energy, so the temperature of the medium does not affect wave speed. light needs to vibrate particles, so it travels fastest in tightly packed solids, while sound does not need a medium, so it travels fastest in a gas. tightly packed particles in solids slow down the light waves; however, sound waves make particles bounce into each other, so they travel faster in solids.