A product, by definition a product is produced by a chemical reaction.
Endothermic, if the energy is in the form of heat.
An endothermic reaction is one that uses chemical energy.
During photosynthesis, no chemical reaction gives off heat. Photosynthesis is an endothermic process, meaning it requires energy in the form of sunlight to convert carbon dioxide and water into glucose and oxygen.
During a chemical reaction, energy is either absorbed or released. If energy is released, it is usually in the form of heat. If energy is absorbed, the reaction requires an external energy source to proceed.
endothermic
It is a chemical reaction which requires heat - possibly from the environment - to proceed.
Chemical Equation
bleach and a household cleaner
The substances that form in a chemical reaction are the products, while the substances that react are the reactants. Products have different chemical properties than reactants because they have undergone a chemical change during the reaction.
The chemical reaction for the industrial preparation is:C2H4 + H2O = C2H5OH
When elements and compounds combine to form new compounds the reaction is described in a chemical equation.
Oxygen is an element, not a reaction of any form.