Reactivity 1.1

Measuring Enthalpy Changes

The study of heat transfer ( $\Delta H$ ) during chemical reactions.

Guiding Question: What can be deduced from the temperature change that accompanies chemical or physical change?

System vs. Surroundings and the distinction between Heat ( $q$ ) and Temperature ( $T$ ).

Direction of heat flow and the sign convention for $\Delta H$ .

Visualizing reaction pathways, Activation Energy ( $E_a$ ), and Transition States.

Calculating enthalpy changes experimentally using $q=mc\Delta T$ .

Test your definitions and sign conventions.

Calorimetry calculations and profile sketching.