Thermochemistry Fundamentals

The study of energy changes that occur during chemical reactions and changes in state.

Energy stored in chemical bonds.

Energy that transfers from one object to another because of a temperature difference between the objects.

<p>A part of the universe on which you focus your attention, can vary in size.</p> Signup and view all the answers

<p>False</p> Signup and view all the answers

<p>A process that absorbs heat from surroundings.</p> Signup and view all the answers

<p>A process that releases heat to its surroundings.</p> Signup and view all the answers

<p>The amount of heat needed to increase the temperature of an object by 1ºC.</p> Signup and view all the answers

<p>The amount of heat it takes to raise the temperature of 1g of the substance by 1ºC.</p> Signup and view all the answers

<p>Precise measurement of the heat flow into or out of a system for chemical and physical processes.</p> Signup and view all the answers

<p>An insulated device used to measure the absorption or release of heat.</p> Signup and view all the answers

<p>The heat of a system at constant pressure.</p> Signup and view all the answers

<p>A chemical equation that includes the enthalpy change.</p> Signup and view all the answers

<p>The enthalpy change for a chemical equation exactly as it is written.</p> Signup and view all the answers

<p>The heat of reaction for the complete burning of one mole of substance.</p> Signup and view all the answers

<p>The heat absorbed by one mole of a solid substance as it melts to a liquid at a constant temperature.</p> Signup and view all the answers

<p>The heat lost when one mole of a liquid solidifies at a constant temperature.</p> Signup and view all the answers

<p>The amount of heat released by one mole of a vapor as it condenses to a liquid at a constant temperature.</p> Signup and view all the answers

<p>The enthalpy change caused by dissolution of one mole of a substance.</p> Signup and view all the answers

<p>If you add two or more thermochemical equations to give a final equation, then you can also add the heats of reaction to give the final heat of reaction.</p> Signup and view all the answers

<p>The changes in enthalpy that accompany the formation of one mole of a compound from its elements with all substances in their standard states at 25°C.</p> Signup and view all the answers