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.
Caffeine occurs naturally in the beans, leaves and fruits of more than 60 different types of plants in over 50 countries worldwide. It is found in coffee, tea, cocoa, chocolate and energy drinks, and is added to certain medications. Coffee has a higher caffeine content than tea per cup, and ground coffee is much stronger than instant coffee. Even decaffeinated products contain a small amount if caffeine.