Heating Up

Apuntes

• Subtopic: Heating and Reaction Rates Chemical reactions occur at a certain speed called the reaction rate. Some reactions are very fast, while others can take years. Factors like temperature can influence these reaction rates. The collision theory states that in chemical reactions, particles collide hard enough to break the existing bonds and form new ones. When temperature rises, so does the kinetic energy in the particles of the reactants. This increase in energy results in a higher number of collisions and more energetic collisions. When the temperature is low, kinetic energy decreases, which slows down the collisions and reduces the reaction rate. Here are some examples: - Cookies bake faster at higher temperatures. - Refrigeration slows down the growth of bacteria and the decomposition of food.