Which is a simple substance that cannot be broken down into any other substances?

Using data from seismic waves, geologists have learned that earth’s interior is made up of several

Particles vibrate in a rigid structure and do not move relative to their neighbors.

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?