Sort the chemical reactions based on whether they absorb or release energy. respiration in cellsproducing electric currentburning a candlebaking breadactivating a cold packphotosynthesis

The chemical reactions that absorb energy are called endothermic reactions. These reactions absorb more energy than they release. From the given options endothermic reactions are: respiration in cells, photosynthesis, activating a cod pack

The chemical reactions that release energy are called an exothermic reactions: producing electric current, burning a candle, baking bread.