:'( will give brainliest which of these is true of a chemical reaction? a. energy is always transferred from reactants to products b. energy is always transferred from products to reactants c. energy is transferred between products and reactants d. energy is not transferred

C because you have exo and endothermic

Hello thereone of the following properties was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version. which property fits this description? answer: atomic mass  was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version.