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Exothermic reaction: with release of heat

Endothermic reaction: with absorption of heat

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What two types of energy change can occur in a chemical reation?

Two types of energy change that can occur in a chemical reaction are endothermic or exothermic. An exothermic reaction causes an increase in temperature and an endothermic reaction causes a decrease in temperature.


When this reation occurs in a lab the room gets warmer and light is given off. is the reation exothermic or endothermic?

122


When two substances get colder in a chemical reation?

Endothermic reaction?


Is the reaction between sodium and water endothermic?

The reaction between sodium and water is exothermic because it releases heat energy. When sodium comes into contact with water, it reacts vigorously, producing hydrogen gas and sodium hydroxide while giving off heat in the process.


Is silver nitrate and copper an exothermic reation?

yes, it's far from endothermic, because there is no internal change within the element related to structure or energy


How do you figure out how much heat is absorbed in a reation?

heat is treated as a reactant or a product


Does an exothermic reation release energy into its surroundings and its products have more energy to the reactant?

Two different answers:Yes, an exothermic reaction releases energy into its surroundings No, its products do NOT have more energy than the reactant(s)


What is an endothermic reation?

A reaction that absorbs energy making the products feel cooler (the temperature decreases over time)


Why does the temperature drop once the reaction reaches the stoichiometric point?

In can occur if the reaction in question in exothermic. After the stoichiometric point , there is no reactant left to react. No reaction occurs and no heat is evolved and as a result temperature drops.


What reation will occur with CaCl2 and NaCl?

No reaction happens. Only way to get a reaction going is if you have two molecules with different Metals and Non-metals. Metals in this one are different but non-metals are not so no reaction.


What is the reation equation for NaOCl and NaHSO3?

Im not sure, but with self experimentation, I've found that it does release Cl2, and is exothermic. Hope that helps.


What is the original substances before a chemical reation occurs are the?

Reactants --> Chemical reaction --> Products