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The amount of chemical energy a substance has is determined by the types and arrangement of atoms and molecules in that substance. The energy is stored within the chemical bonds between these atoms and molecules. The strength of these bonds and the potential energy stored in them determine the amount of chemical energy.
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Where in a substance is chemical energy stored?
chemical bonds
What term describes a substance rhat lowers the amount of energy needed to start a chemical reaction?
This substance is called a catalyst.
How does activation energy determine if a reaction will release or absorb energy?
Activation energy is really just the minimum amount of energy needed for a chemical reaction to occur. Without it, the energy will stay the same and the substance cannot undergo a chemical change. The thing to look at, I think, is the product of the reaction. For example, in a graph, two substances could have the same activation energy, but after the reaction the amount of energy in substance 1 could be extremely low and the amount of energy in substance 2 could be higher than the activation energy. In substance 1, evidence of an EXOTHERMIC reaction has occurred because the amount of energy in the original substance was lost indicating that it has released energy. Whereas in substance 2, when the amount of energy was higher than the activation energy, it is evident that an ENDOTHERMIC reaction has occurred because the amount of energy after the reaction is higher than it was before the reaction. This shows that substance 2 absorbedenergy making it endothermic. hope this helps!
Why does it take time for solids to melt?
Certain solids transform or melt into liquids faster than others because of their chemical composition and the strength of their intermolecular bonds. This is measured by the "specific heat." The amount of energy required to break or form an intermolecular bond is the specific heat of a substance. The specific heat determines a substances melting/freezing point (i.e. the point at which a solid becomes a liquid and vice versa). The amount of energy, absorbed in the form of heat, in the process of melting a solid into a liquid, is what determines how fast a substance melts.
What substance lowers the energy needed to start a chemical reaction?
A substance that lowers the energy needed to start a chemical reaction is a catalyst.
Where in a substance is chemical energy stored?
chemical bonds
What term describes a substance that lowers the amount of energy needed to start a chemical reactions?
Catalyst
What term describe a substance that lowers the amount of energy needed to start a chemical reaction?
Catalyst
What is chemical energy?
Chemical energy is that energy contained in a chemical substance that is released when that substance reacts with another substance. For instance there the sucrose molecule stores chemical energy.
What is the chemical energy is?
Generally chemical energy can be defined as the aptitude of a substance to be transformed in another substance by a chemical reaction.
How does a substance gain heat?
A substance gains heat, or otherwise known as thermal energy, in many different ways. These can be from pressure, friction, the transformation of chemical energy to thermal energy, the transformation of electromagnetic energy to thermal energy, potential energy to the energy of motion (kinetic energy) or a substance can become exothermic during, and after a chemical change if the amount of energy produced from the broken bonds is greater than the amount of energy required for rearranged bonds to be made.
Where is a substances chemical energy stored?
chemical energy a substance has
Is energy a chemical substance?
No.
What is the definition chemical energy?
as you no chemical is the combination of two or more substance that is chemical energy is a energy found when there is chemical reaction
What term describes a substance rhat lowers the amount of energy needed to start a chemical reaction?
This substance is called a catalyst.
What does chemical energy mean?
That part of the energy in a substance that can be released by a chemical reaction
How does activation energy determine if a reaction will release or absorb energy?
Activation energy is really just the minimum amount of energy needed for a chemical reaction to occur. Without it, the energy will stay the same and the substance cannot undergo a chemical change. The thing to look at, I think, is the product of the reaction. For example, in a graph, two substances could have the same activation energy, but after the reaction the amount of energy in substance 1 could be extremely low and the amount of energy in substance 2 could be higher than the activation energy. In substance 1, evidence of an EXOTHERMIC reaction has occurred because the amount of energy in the original substance was lost indicating that it has released energy. Whereas in substance 2, when the amount of energy was higher than the activation energy, it is evident that an ENDOTHERMIC reaction has occurred because the amount of energy after the reaction is higher than it was before the reaction. This shows that substance 2 absorbedenergy making it endothermic. hope this helps!
