The bonds that are broken when water vaporizes are 1.nonpolar covalent bonds 2.covalent bonds between atoms within water molecules. 3.hydrogen bonds between water molecules. 4.polar covalent bonds. 5.ionic bonds.

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?