Slide 1 of 34 © Copyright Pearson Prentice Hall > The Flow of Energy—Heat and Work Energy Transformations Heat, represented by q, is _______________ that transfers from one object to another because of a _____________ ______________ between them. Heat ___________ flows from a _________ object to a ____________ object. 17.1

Slide 2 of 34 © Copyright Pearson Prentice Hall > The Flow of Energy—Heat and Work Energy Transformations ________________________ is the study of ______________ changes that occur during chemical reactions and changes in state. The energy stored in the chemical bonds of a substance is called ____________________ _____________________ energy. 17.1

Slide 3 of 34 © Copyright Pearson Prentice Hall > The Flow of Energy—Heat and Work Energy Transformations When fuel is burned in a car engine, chemical potential energy is released and is used to do work. 17.1

Slide 4 of 34 © Copyright Pearson Prentice Hall > The Flow of Energy—Heat and Work Exothermic and Endothermic Processes In an _____________ process, the system ___________ heat as the surroundings cool down. In an ______________ process, the system ____________ heat as the surroundings heat up. 17.1

Slide 5 of 34 © Copyright Pearson Prentice Hall > The Flow of Energy—Heat and Work Exothermic and Endothermic Processes In studying energy changes, you can define a ____________ as the part of the universe on which you ________ your attention. The ________________ include everything else in the universe. The law of conservation of energy states that in any chemical or physical process, energy is neither ___________ nor ______________. 17.1

Slide 6 of 34 © Copyright Pearson Prentice Hall > The Flow of Energy—Heat and Work Exothermic and Endothermic Processes An endothermic process is one that ________________ heat from the surroundings An exothermic process is one that ___________ heat to its surroundings.

© Copyright Pearson Prentice Hall Slide 7 of 34 Conceptual Problem 17.1

© Copyright Pearson Prentice Hall Slide 8 of 34 Practice Problems for Conceptual Problem 17.1 Problem Solving 17.1 Solve Problem 1 with the help of an interactive guided tutorial.

Slide 9 of 34 © Copyright Pearson Prentice Hall > The Flow of Energy—Heat and Work Units for Measuring Heat Flow Heat flow is measured in two common units, the __________ and the _____________. The energy in food is usually expressed in Calories. 17.1

Slide 10 of 34 © Copyright Pearson Prentice Hall > The Flow of Energy—Heat and Work Heat Capacity and Specific Heat The __________ ______________ of an object depends on both its ___________ and its _______________ composition. The amount of heat needed to increase the temperature of an object exactly 1°C is the ___________ ________________ of that object. 17.1

Slide 11 of 34 © Copyright Pearson Prentice Hall > The Flow of Energy—Heat and Work Heat Capacity and Specific Heat The specific heat capacity, or simply the ____________ _________________, of a substance is the amount of heat it takes to raise the temperature of ___ g of the substance ___°C. 17.1

Slide 12 of 34 © Copyright Pearson Prentice Hall > The Flow of Energy—Heat and Work Heat Capacity and Specific Heat Water ______________ a lot of heat as it cools. During freezing weather, farmers protect citrus crops by spraying them with water Because it is mostly water, the ___________ of a hot apple pie is much more likely to burn your tongue than the _____________.

Slide 13 of 34 © Copyright Pearson Prentice Hall > The Flow of Energy—Heat and Work Heat Capacity and Specific Heat 17.1

© Copyright Pearson Prentice Hall SAMPLE PROBLEM Slide 14 of

© Copyright Pearson Prentice Hall Slide 15 of 34 Practice Problems for Sample Problem 17.1