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No. Chemical changes can release heat (exothermic) or absorb heat (endothermic). The change in molecular structure determines whether energy is stored or released. Example of exothermic : * combustion of paper (oxidation, releasing carbon bond energy) * acetic acid (vinegar) accelerates the oxidation of steel wool (rusting) Example of endothermic : * Combination of citric acid and baking soda : temperature of the mixture shows a definite drop before rewarming by room temperature air. * In a commercial "Cold Pack", the chemicals mix and absorb heat. There are reactions which require an activation energy before proceeding to an exothermic change. This is demonstrated by the common matchstick.
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What happens to energy during a chemical change?
when a chemical change occurs, chemical bonds are broken up
What happens to chemical bonds during chemical change?
During a chemical change, chemical bonds are broken between atoms in the reactants and new bonds are formed to create products. Energy is either released or absorbed during bond breaking and forming processes. The types and strengths of the bonds determine the overall energy change of the chemical reaction.
In a chemical change energy does what?
In a chemical change, energy is either absorbed or released. This can result in changes in temperature, light production, or other forms of energy transfer during the reaction.
Why is a phase change not a chemical reaction?
A phase change is a physical change that involves rearranging the molecules in a substance without changing its chemical composition. In contrast, a chemical reaction involves the breaking and forming of chemical bonds, resulting in the formation of new substances with different chemical compositions.
What happens when a pure substance undergoes a chemical change?
when a pure substance undergoes a chemical change it is no longer that same substance. A chemical change changes the identity of the substance. Hope i helped
Is Gas produced from a reaction is a phase change and not a chemical change.?
A gas released during a chemical reaction is a chemical change.
Is chemical energy related to chemical change?
Yes it is released/ absorbed during chemical changes.
What happens to energy during a chemical change?
when a chemical change occurs, chemical bonds are broken up
What is energy released or absorbed during chemical change called?
It depends. There are two types of chemical reaction int his sense. Exothermic reactions release energy and endothermic reactions absorb it.
What undergo no chemical change during a chemical change?
Catalysts doesn't undergo a chemical change during a chemical reaction.
What happens to chemical bonds during chemical change?
During a chemical change, chemical bonds are broken between atoms in the reactants and new bonds are formed to create products. Energy is either released or absorbed during bond breaking and forming processes. The types and strengths of the bonds determine the overall energy change of the chemical reaction.
What undergoes no chemical change during a chemical reaction?
A catalyst undergoes no chemical change during a chemical reaction.
What gets rearranged during a chemical change?
atoms, are rearranged during a chemical change.
Energy is what in a chemical change?
In a chemical change, energy is either absorbed or released. When bonds are broken, energy is absorbed (endothermic reaction), and when bonds are formed, energy is released (exothermic reaction). Overall, the total energy of the system may change during a chemical reaction.
What happens to chemical change during a chemical change?
when a chemical change occurs, chemical bonds are broken up
In a chemical change energy does what?
In a chemical change, energy is either absorbed or released. This can result in changes in temperature, light production, or other forms of energy transfer during the reaction.
Why is a phase change not a chemical reaction?
A phase change is a physical change that involves rearranging the molecules in a substance without changing its chemical composition. In contrast, a chemical reaction involves the breaking and forming of chemical bonds, resulting in the formation of new substances with different chemical compositions.
