THINK ABOUT IT
Identifying Types of Observations
Indicate the type of observation that is best represented by the figures below.
Time (s)
Temp (°C)
Solution
Observation
0
25
Unknown 1
Blue
10
18
Unknown 2
Purple
22
12
qualitative
O quantitative
qualitative
quantitative
O qualitative
O quantitative
DONE
DONE
DONE
Intro

answers: to make sure that all of the broken pieces of tablet were added to the water, to allow for fair comparison of all three trials, with different particle sizes to avoid experimental error

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.