True or False If the statement is true, write "true." If it is false, change the underlined word or words to make the statement true. 1. In the equation AH = Hproducts - Hreactants, the letter H stands for heat. 2. Hess's law describes how to find the net enthalpy change for a series of chemical reactions. 3. The amount of heat needed to raise the temperature of a container of water from 14°C to 15°C is the specific heat of water. 4. In an exothermic, the sign of AH is positive. 5. All combustion reactions are classified as endothermic reactions.

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