Chemical Energy Examples
1. Cold packs used in sports are examples of chemical energy. When the inner pouch is broken which is filled with water it reacts with the ammonium nitrate granules and makes new chemical bonds during the reaction absorbing energy from the surroundings. As a result of chemical energy being stored in new bonds, the temperature of the cold pack decreases.
2. When propane gas is burned for cooking on a grill, the chemical energy stored in the bonds of propane molecules are broken and heat is released for cooking.
3. During the photosynthesis, the energy from sunlight is converted into chemical energy which is stored in the bonds of carbohydrates, the food plants make. Later, the plants can utilize the energy stored in the bonds of the carbohydrate molecules for growth and repair.
4. During cellular respiration, our bodies take glucose molecules and breaks the bonds holding the molecules together. When these bonds are broken, the chemical energy stored in these bonds are released and used to make ATP molecules, a form of useable energy for us.
5. Around a campfire, the wood burns. As the wood burns, the chemical energy stored in the bonds of the molecules in the wood release heat and light.
6. In a chemical reaction in a lab, aluminum foil is added to hydrochloric acid solution. The test tube gets very warm because during the reaction, many chemical bonds are broken releasing chemical energy causing the temperature of the solution to rise.