Question

Give an example of each of the following chemical changes: An endothermic reaction

• A. making ice cubes
• B. condensation of rain from water vapor
• C. baking bread
• D. mixing sodium sulfite and bleach

Answer 1

The correct option is C baking bread

Exothermic reactions are reactions or processes that release energy, usually in the form of heat or light. In an exothermic reaction, energy is released because the total energy of the products is less than the total energy of the reactants.
When quick lime reacts with water to form slaked lime , it releases a lot of energy .
Endothermic reactions are reactions that require external energy, usually in the form of heat, for the reaction to proceed. Since endothermic reactions draw in heat from their surroundings, they tend to cause their environments to cool down. They are also generally non-spontaneous, since endothermic reactions yield products that are higher in energy than the reactants.
When hydrogen reacts with iodine to form hydrogen iodide , it absorbs a lot of energy .