Substrate (a specific reactant acted upon by an enzyme is called the enzyme's substrate.)
materials used in chemical reactions are reactants
Reactions that are hotter than the reactants are typically exothermic reactions, where energy is released in the form of heat. Examples include combustion reactions, such as burning wood or fossil fuels, and some oxidation reactions. In these cases, the products have lower energy than the reactants, resulting in the release of heat that raises the temperature of the surroundings.
Substrates
Some different factors that affect the rates of chemical reactions include whether or not a catalyst is present, the concentration of the reactants, temperature of the reactants, & pressure in the case of gas phase reactions.
The reactants tend to be simple substances, while the product is more complex.
Endothermic reactions favor the formation of products over the presence of reactants.
You might mean reactants.
Reactants
Light and Water.
materials used in chemical reactions are reactants
the reactions in which value of Qc=Kc
it is the reactants which give the product
crayons :)
Substrates
It is necessary to balance the relation between reactants and products. You need to know these compounds, chemical formulas, valences.
Endothermic reactions favor the reactants in a chemical reaction.
Equilibrium expressions cannot be written for complete reactions, because you have to have the forward rate, as well as a reverse rate. Complete reactions do not have reverse rates, because they become complete, and all of the reactants are used up. Complete reactions only produce products, and the products don't produce reactants. word count for answer: 52