Question 1: What is the simplest form of matter?
A. element B. mixture C. compound D. solution

Question 2: When two or more elements chemically combine it forms ___.
E. mixture F. solution G. suspension H. compound

Question 3: A ___ forms when substances combine, keep their unique properties, and can be separated by physical means.
J. mixture K. compound L. reaction M. molecule

Question 4: What is formed when 2 substances combine and look like a single substance with the same properties throughout?
R. mixture S. solution T. compound V. suspension

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.