1. Cooking requires continuous addition of energy to the chemical reactions that are taking place. The chemical reactions involved in cooking can be described as _____.
2. Measuring how quickly a reactant disappears is one way to measure the _____ of the reaction.
3. A chunk of limestone, which is calcium carbonate, reacts with acid at a certain rate. If the limestone were crushed, the rate of reaction between the acid and the limestone would _____.
Thank you so much for your help, I'm really stuck on these three.
well what is the opposite of exothermic ? :) http://www.yourdictionary.com/endothermic
rate ?
the more contact, the faster.
endothermic
1. Cooking requires continuous addition of energy to the chemical reactions that are taking place. The chemical reactions involved in cooking can be described as exothermic reactions. Exothermic reactions release energy in the form of heat. In cooking, the heat energy is used to drive various chemical reactions that transform raw ingredients into cooked food.
2. Measuring how quickly a reactant disappears is one way to measure the rate of the reaction. The rate of a chemical reaction refers to how quickly reactants are consumed or how quickly products are formed. By monitoring the disappearance of a reactant over time, one can determine the rate at which the reaction is progressing.
3. A chunk of limestone, which is calcium carbonate, reacts with acid at a certain rate. If the limestone were crushed, the rate of reaction between the acid and the limestone would increase. Crushing the limestone increases its surface area, exposing more of its particles to the acid. This, in turn, increases the frequency of effective collisions between the limestone and the acid molecules, leading to a faster reaction rate.
1. Cooking requires continuous addition of energy to the chemical reactions that are taking place. The chemical reactions involved in cooking can be described as exothermic.
To find this answer, we need to understand the concept of endothermic and exothermic reactions. An exothermic reaction is a chemical reaction that releases energy in the form of heat. In cooking, this energy is usually provided by heat from a stove, oven, or other heat source. The chemical reactions that occur when we cook food release this energy in the form of heat, resulting in the cooked food.
2. Measuring how quickly a reactant disappears is one way to measure the rate of the reaction.
To determine the rate of a chemical reaction, we can measure how quickly one of the reactants disappears. This can be done by monitoring the decrease in concentration or mass of the reactant over time. By measuring the change in reactant concentration or mass per unit time, we can calculate the rate at which the reaction is occurring.
3. A chunk of limestone, which is calcium carbonate, reacts with acid at a certain rate. If the limestone were crushed, the rate of reaction between the acid and the limestone would increase.
In general, increasing the surface area of the reactants increases the rate of a reaction. When a chunk of limestone is crushed into smaller pieces, it exposes a larger surface area to the acid. This increased surface area allows for more frequent collisions between the reactant particles and the acid molecules, which leads to an increase in the rate of reaction. Therefore, the rate of reaction between the acid and the crushed limestone would be greater compared to the rate with a chunk of limestone.