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A reaction in which heat is produced is called exothermic. A reaction in which heat is absorbed (or one that produces cold) is called endothermic.
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What does H of a reaction represent?
It represents the heat involved in a reaction.
What are the ways that heat takes part in a chemical changes?
Heat can be involved in a chemical reaction that is endothermic(absorbs heat) or that is exothermic(releases heat)
Can melting happen when a compound is being formed?
yes if there is heat involved in the reaction
How is heat involved in chemical changes?
Heat increases the speed at which the molecules move, thus increasing the speed of the reaction.
What are two ways heat can be involved in chemical change?
heat can be one of the products as in a combustion reaction and it can be used as a catalyst
What is the enthalpy of a reaction?
The amount of energy that is used or released as heat in a reaction.
What two ways is energy involved in a chemical reaction?
When a chemical change occurs, there are two types of ways heat can be involved. In an endothermic reaction, more heat enters the reaction than leaves. In an exothermic reaction, more heat leaves the reaction than enters.
Is it a chemical reaction if you but copper in a fire and it turns black?
yes it is a chemical reaction because the change involved heat and all chemical reactions involve heat and a difference in the appearence of the substance which has recieved heat is noticed
What does the specific heat of a reaction represent?
This is the quantity of energy needed to maintain all substances involved in a chemical reaction at the same temperature.
What does the H of a reaction represent?
It represents the heat involved in a reaction.
Why isn't Hess's law helpful for calculating the heat of reaction involved in the conversion of a diamond to graphite?
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What is the difference between heat of reaction and molar heat of reaction?
Heat of a reacion is the totall amount of heat a reaction produces. Molar heat of a reaction is the heat produced/mol if you have the molar hear of the reaction you can calculate the heat of the reaction based on the moles of reactants you have
