Vocabulary alpha particle atomic number atomic weight beta particle element isotope isotopic abundance mass number neutron nuclide nuclide symbol proton radioactivity Before the discovery of radioactivity, all atoms of a particular element were assumed to be identical.
Side effects. Green coffee seems to cause few side effects. The caffeine in green coffee -- just like the caffeine in brewed coffee -- can cause symptoms that include: 1  Headache. 2  Upset stomach. 3  Anxiety.
Most tea has 15-70 mg caffeine / cup. Coffee tends to have 80-135 mg caffeine / cup. It is a myth that green or white teas are always lower in caffeine than black. Any color of tea (black, green, white, etc.) can be high or low in caffeine.