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.
However, a cup of this tea may contain 3 to 30 mg of caffeine, whereas in case of regular tea, it is between 30 to 60 mg. The caffeine content of instant coffee ranges between 65 and 100 mg per cup and it may go up to 200 mg in drip filtered coffee.Caffeine in a can of coke is 34 mg. Effects of Caffeine in Green Tea.The effects of caffeine in tea are different from that of coffee. It is believed that the caffeine in green tea can improve the metabolism and blood circulation in the human body, through the central nervous system.ffects of Caffeine in Green Tea. The effects of caffeine in tea are different from that of coffee. It is believed that the caffeine in green tea can improve the metabolism and blood circulation in the human body, through the central nervous system.