a word written over the arrow in a chemical reaction question indicates
a. that the substance provides energy for the reaction
b. that the substance provides heat for the reaction
c. that the substance is a product of the reaction
d. that the substance is a reactant of the reaction
d. that the substance is a reactant of the reaction
which of the following comparisons of photosynthesis and (cellular) respiration is most accurate?
a photosynthesis and cellular respiration are related, but cannot occur within the same organism
b photosynthesis and cellular respiration are unrelated in organisms
c. the products of photosynthesis are the reactants of cellular respiration and vice versa. The reactions are complimentary.
d. photosynthesis and cellular data are exact opposites of one another
c. the products of photosynthesis are the reactants of cellular respiration and vice versa. The reactions are complimentary.
d. that the substance is a reactant of the reaction
In order to determine the answer to this question, we need to understand the notation commonly used in chemical reactions.
Chemical equations often include reactants on the left side and products on the right side, with an arrow indicating the direction of the reaction. The substances on either side of the arrow are referred to as reactants and products, respectively.
Now, the word written over the arrow in a chemical reaction question is typically a catalyst. A catalyst is a substance that speeds up the rate of a chemical reaction without being consumed or permanently changed in the process. It helps lower the activation energy required for the reaction to occur. Catalysts are not reactants or products themselves, but rather aid in the conversion of reactants to products.
Therefore, the correct answer to this question would be: d. that the substance is a reactant of the reaction.