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.
Although an element's atoms must all have the same number of protons, they can have different numbers of neutrons and hence different masses. When atoms of the same element have different numbers of neutrons, they are called isotopes.