radiology homework

what are two major branches of natural science?2-How do matter and energy differ ?3- Define an atom and molecule4-What are tue three basic subatomic particles?What is ionization?6-What is the formula used to dtermine the maximum number of electrons that can be contained in a giving shell? How many electrons can be contained  in the N shell?7- The periodic table of elements arranges the elements into periods and group. How are the elements similar within each period and within each group ?8- How do radiationa differs along the electromagnetic specptrum?9- list 5 types of energy10-For electromagnetic radiation what is the relationship between frequency and wavelength and between frequency photon  energy11-List five properties of Xrays