Which statement below is NOT TRUE of an endothermic reaction?
The potential energy of the products is higher than the potential energy of the reactants.
More bond energy was given off in the formation of the product bonds than was absorbed in breaking the reactant bonds.
There is a net absorption of energy into the system from the surroundings.
The product bonds are weaker than the reactant bonds.
The product bonds are weaker than the reactant bonds. (This statement is not true of an endothermic reaction.)
Which statement below is TRUE of an exothermic reaction?
More bond energy is absorbed by the reactants than is released by the products.
The product bonds are stronger than the reactant bonds.
The potential energy of the products is higher than the potential energy of the reactants.
There is a net absorption of energy into the system from the surroundings.
The product bonds are stronger than the reactant bonds. (This statement is true of an exothermic reaction.)
Which 2 statements below are TRUE about endothermic and exothermic reactions?
In an endothermic reaction, the system loses energy while the surroundings gain energy.
In an exothermic reaction, the system loses energy while the surroundings gain energy.
In an exothermic reaction, the system gains energy while the surroundings lose energy.
In an endothermic reaction, the system gains energy while the surroundings lose energy.
In an endothermic reaction, the system gains energy while the surroundings lose energy.
In an exothermic reaction, the system loses energy while the surroundings gain energy.
Which two statements below correctly describe weak chemical bonds?
Weak chemical bonds have low bond energies because the bonds are easy to break.
Weak chemical bonds have low potential energies, because they are stable.
Weak chemical bonds have high bond energies because the bonds are difficult to break.
Weak chemical bonds have high potential energies, because they are unstable.
Weak chemical bonds have low bond energies because the bonds are easy to break.
Weak chemical bonds have high potential energies, because they are unstable.
nh3+hcl=nh4cl+ heat Which statement below correctly describes the reaction shown above?
The reaction is reversible and exothermic.
The reaction is not reversible and is endothermic.
The reaction is not reversible and is exothermic.
The reaction is reversible and endothermic.