Sulfur Recovery Daily Question 2018.10.2
Thread Content
Question: What is a reactant? What is a product? What is an endothermic reaction? What is an exothermic reaction? Answer: ① In a chemical reaction, the substances that take part in the reaction are called reactants ； ②In a chemical reaction, the substances that are formed in the end are called products ； ③A chemical reaction that releases heat energy is called an exothermic reaction ； ④A reaction that absorbs heat energy from the environment is called an endothermic reaction.
In a chemical reaction, the substances that take part in the reaction are called reactants； In a chemical reaction, the substances that are formed in the end are called products ； A chemical reaction that releases heat energy is called an exothermic reaction ； A reaction that absorbs heat from the environment is called an endothermic reaction ；
In a chemical reaction, the substances that take part in the reaction are called reactants； In a chemical reaction, the substances that are formed in the end are called products ； A chemical reaction that releases heat energy is called an exothermic reaction ； A reaction that absorbs heat from the environment is called an endothermic reaction
In a chemical reaction, the substances that take part in the reaction are called reactants； In a chemical reaction, the substances that are formed in the end are called products ； Exothermic reaction: The total energy of the reactants is greater than that of the products; energy is released during the chemical reaction, resulting in an exothermic process. Endothermic reaction: The total energy of the reactants is less than that of the products; the chemical reaction absorbs energy, it is endothermic
①In a chemical reaction, the substances that take part in the reaction are called reactants； ②In a chemical reaction, the substances that are formed in the end are called products ； ③A chemical reaction that releases heat energy is called an exothermic reaction ； ④A reaction that absorbs heat energy from the environment is called an endothermic reaction.
In a chemical reaction, the substances that take part in the reaction are called reactants； In a chemical reaction, the substances that are formed in the end are called products ； A chemical reaction that releases heat energy is called an exothermic reaction ； A reaction that absorbs heat energy from the environment is called an endothermic reaction.
Combustion, neutralization, metal oxidation, thermite reactions, reactions between more reactive metals and acids, and reactions in which unstable substances turn into stable ones are all exothermic reactions (but we should note that the conversion of graphite to diamond under high pressure is also an exothermic reaction, although the opposite is true at normal pressure). Most decomposition reactions are endothermic (though this cannot be generalized; for example, the decomposition of potassium chlorate to produce potassium chloride and oxygen is a common exothermic reaction). All redox reactions that can occur spontaneously are exothermic reactions. Among common reactions, combustion and neutralization reactions are both exothermic; acid-base neutralization reactions, reactions between metals and acids, reactions between metals and water, combustion reactions, and explosion reactions are all exothermic. In making specific judgments, it is often necessary to rely on facts remembered from prior knowledge. The reverse reaction of an exothermic reaction must be an endothermic reaction.
In a chemical reaction, the substances that take part in the reaction are called reactants, while the substances produced as a result of the chemical reaction are known as products. Exothermic reaction: The total energy of the reactants is greater than the total energy of the products ； Endothermic reaction: The total energy of the reactants is less than the total energy of the products.
In a chemical reaction, the substances that take part in the reaction are called reactants； In a chemical reaction, the substances that are formed in the end are called products ； A chemical reaction that releases heat energy is called an exothermic reaction ； A reaction that absorbs heat from the environment is called an endothermic reaction ；
Reactants are the substances that take part in a reaction, while products are the substances that are formed as a result of the reaction; they are different from each other. The former are the cause, and the latter are the effect. Products are substances that are created through the reaction between reactants. An exothermic reaction is a chemical reaction in which heat is released. Reason: The total energy of the reactants is higher than the total energy of the products. Common exothermic reactions include combustion, slow oxidation, neutralization reactions, the reaction of metals with acids to produce hydrogen, and the reaction between quicklime and water. An endothermic reaction is a chemical reaction that absorbs heat. Reason: The total energy of the reactants is lower than the total energy of the products. Common endothermic reactions: C(s)+H2O(g)…
In a chemical reaction, the substances that take part in the reaction are called reactants； In a chemical reaction, the substances that are formed in the end are called products ； A chemical reaction that releases heat energy is called an exothermic reaction ； A reaction that absorbs heat from the environment is called an endothermic reaction ；