Whereas formation of anion is an example of exothermic process because after adding electron on valence shell. FlexBook Platform FlexBook FlexLet and FlexCard are registered trademarks of CK-12 Foundation. Endothermic Reactions Definition And Examples Exothermic Reaction Chemistry Lessons Physical Chemistry Freerice doesnt support this browser. . Endothermic and exothermic reactions are chemical reactions that absorb and release heat respectively. Endothermic reactions are chemical reactions that absorb heat while exothermic reactions are chemical reactions that give off heat. And to release exothermic chemical energy to drive the organisms metabolism. During this process plants absorb energy from the Sun and convert it into carbon dioxide and water into glucose and oxygen. View all 26 worksheets. Explore Fractional Distillation TRY WORKSHEET FOR FREE. Carbon Cycle Quiz Photosynthesis Quiz Animal and Plant