Laju Reaksi, Kimia Kelas XI

Hello everyone! My name is Dewa Idlam Indah Damayanti I'm from class 11F2, number absent 5 Here I will bring a little material about reaction speed All of you must be familiar with the word reaction speed, right? Let's watch the following video! Here I will explain about what is reaction speed What is reaction speed? Reaction speed is defined as the change of reaction concentration, reaction rate, or product reaction result in a given time In addition, reaction speed is defined as the decrease or increase of reaction concentration or product in a given time Well, to measure this reaction speed can be determined in two ways The first is to measure the number of reactions used or reacted per unit time The second is to measure the reaction result formed per unit time Well, for further information about the factors in the reaction cloth, the example of application in everyday life, and the general formula, as well as practical examples that I have done So, keep watching this video! Well, friends, here I will do a practical example of application of reaction speed in everyday life, for example, melted ice Well, in this class, there are several ice cubes and here I will wait until the ice melts Let's keep watching this video! Well, friends, here after a few minutes, the ice cubes in the glass, some of them have melted Well, for further information about the explanation of the practical example that I explained, it's on the side Calor is an energy, more precisely heat energy, where calor can move from the environment to the system, as well as vice versa from the system to the environment Calor change results in, 1. change in temperature 2. change in the existence of a substance where here the ice cubes become liquid where this ice cube is a solid phase of H2O and will turn into H2O liquid The ice cubes left in the air will melt because this ice cube will absorb heat or calor from the environment into the system so that the solid ice cubes turn into liquid H product is larger than H reactant where the product here means that H2O liquid is larger than H2O which is a solid which is an ice cube so that we get delta H is equal to positive, which is an endothermic reaction