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.
Organic Hojicha Green Tea. View All Green Tea. 1  NO tea from the plant camellia sinensis is caffeine-free; even decaffeinated teas have a small amount of caffeine. 2  When brewed at our recommended serving size, any variety of tea (black, green, oolong, white and pu-erh) will have less caffeine than coffee.