Ihave no idea what a galactic symbol is. it says it on one of my science assignments and i'm confused. all i know is that it may have to do with the periodic table. if anyone could that'll be great. my assignment is due today and i don't want to fail. (i have no idea if this is chemistry or biology. all i know is that its science. so i put chemistry as the category. i apologize if i'm incorrect.)

first one is the correct answer

definition

                    entropy is a measure of the randomness or the extent of disorder of a chemical process.

                      enthalpy is a measure of the heat change of a reaction occurring at a constant pressure.

measurement units:

                        entropy is measured in joule per kelvin (jk⁻¹)   whereas enthalpy is measured in joule per mole (jmol⁻¹)

requirements:

                            entropy has no requirements or limits, and its change is measured by the division between the heat change of the chemical process and the temperature.

                              in contrast, enthalpy can only be related to the heat change of the reaction under standard conditions.