What law states that when matter undergoes a physical or chemical change, no atoms are created or destroyed?

“other instruments such as gravimeters and magnetometers are also used in the search for petroleum. extracting crude oil normally starts with drilling wells into an underground reservoir. when an oil well has been tapped, a geologist (known on the rig as the "mudlogger") will note its presence. “ this is what i found on google i hope it

It has more electrons than an neutral object

Answer a, i don't feel like going into detail on this one because of how long that read was. water goes whoosh moving through the turbines to turn them and convert the energy of these mechanisms into electrical energy :

Umm, its not your fault, and its because some things in your brain.