2. Once you recognize that this is a single replacement problem, determine whether the non-bonded element is a cation or anion. Then determine which element it will replace. Remember cations can only replace cations and anions can only replace anions.
If you haven't eaten for several hours and your blood sugar level drops, another hormone from your pancreas called glucagon signals your liver to break down the stored glycogen and release glucose back into your bloodstream.
Some sugar is quickly ushered into the cells, including brain cells, and the rest goes into storage or into fat cells. An hour later, your blood sugar may fall dramatically, creating low blood sugar, and these rapid swings produce symptoms of impaired memory and clouded thinking.