Evidence That Schizophrenia is a Brain Disease. Data from modern scientific research proves that schizophrenia is unequivocally a biological disease of the brain, just like Alzheimer's Disease and Bipolar Disorder. For one thing, schizophrenia is now known to be partially caused by genetics and to be inherited.
One mole of atoms of any element always has the same number of atoms (about 7023602200000000000â 6.022Ã1023). This number was chosen so that if an element has an atomic mass of 1 u, a mole of atoms of that element has a mass close to one gram.
The atomic mass of an atom is usually within 0.1 u of the mass number. The number of protons an atom has defines what element it is. However, most elements in nature consist of atoms with different numbers of neutrons. An atom of an element with a certain number of neutrons is called an isotope.