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What is true when two reactants combine in an exothermic reaction?
Wiki User
∙ 9y ago
Exothermic Reactions:
The delta h is always NEGATIVE!
Energy is released
(delta is the little triangle in front of the H)
Wiki User
∙ 12y ago
Wiki User
∙ 9y agoThe reaction releases energy in the form of heat or light. This is the opposite of an endothermic reaction which requires energy to form the product.
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Is it true that in a chemical reaction reactants are changed into products?
no, it is before the reaction
Is it true that reactants of a catalyst assisted reaction are known as substrates?
Yes. it is true.
Is it true that an exothermic reaction absorbs heat and is categorized as dissipated energy?
Exothermic reactions release energy. Endothermic reactions absorb energy.
What is true about the balance of mass in a fusion reaction?
In a fusion reaction the mass of the products is less than the mass of the reactants.
If you wish to increase the rate of a chemical reaction you might try increasing the concentration of the reactants. (True) or (False)?
(True)
In exothermic reactions the energy required to break the bonds in the reactants is greater than the energy released as the products form?
Exothermic reaction
The reactant represents the starting materials in a chemical reaction?
Reactants are the starting materials of a reaction. Reactants combine to form the products.
Is the making of ice cubes an exothermic reaction?
exothermic. the energy flows out. exothermic. the energy flows out.
Is it true that in a chemical reaction reactants are changed into products?
no, it is before the reaction
A change of state where energy is given off?
Endothermic Reaction. Exothermic is a chemical reaction in which energy must be provided.
Is this true in a chemical reaction the substances that interact are called the products?
No. these are the reactants, the products are what are produced by the reaction.
Is it true In a chemical reaction reactants are changed into products?
True
A car's engine converts gasoline into energy in an exothermic reaction?
Yes.
Is it true that reactants of a catalyst assisted reaction are known as substrates?
Yes. it is true.
For the chemical reaction H2 CO2--H20 Co the energy contained in the reactants is 352 kj and the energy contained in the products is 394 kj assuming 1 mol of each substance is present is this true?
42 kJ is released, and the reaction is exothermic
True or false an exothermic reaction often produces energy in the form of heat light and electricity?
True
Is it true that an exothermic reaction absorbs heat and is categorized as dissipated energy?
Exothermic reactions release energy. Endothermic reactions absorb energy.
