Helppp! Which Diagram does NOT represents chemical change

What is impossible to do with a hypothesis

Calculate the mass of silver needed to react with chlorine to produce 126g if silver chloride?

If you chip a tooth, most likely you will go to the dentist to have the missing material filled in. currently the material used to fill in teeth is a polymer that is flexible when put in, yet is hardened to the strength of a tooth after irradiation with blue light at a wavelength of 461 nm. what is the energy in joules for a photon of light at this wavelength?