Domanda del libro di testo
Imagine that you are climbing a mountain. (a) Is the distance you travel to the top a state function?
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Ch.5 - Thermochemistry
Brown14th EditionChemistry: The Central ScienceISBN: 9780134414232
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TOC.tableOfContents
- Ch.1 - Introduction: Matter, Energy, and Measurement177
- Ch.2 - Atoms, Molecules, and Ions231
- Ch.3 - Chemical Reactions and Reaction Stoichiometry216
- Ch.4 - Reactions in Aqueous Solution189
- Ch.5 - Thermochemistry175
- Ch.6 - Electronic Structure of Atoms168
- Ch.7 - Periodic Properties of the Elements150
- Ch.8 - Basic Concepts of Chemical Bonding177
- Ch.9 - Molecular Geometry and Bonding Theories200
- Ch.10 - Gases179
- Ch.11 - Liquids and Intermolecular Forces113
- Ch.12 - Solids and Modern Materials154
- Ch.13 - Properties of Solutions157
- Ch.14 - Chemical Kinetics199
- Ch.15 - Chemical Equilibrium128
- Ch.16 - Acid-Base Equilibria164
- Ch.17 - Additional Aspects of Aqueous Equilibria163
- Ch.18 - Chemistry of the Environment105
- Ch.19 - Chemical Thermodynamics164
- Ch.20 - Electrochemistry171
- Ch.21 - Nuclear Chemistry122
- Ch.22 - Chemistry of the Nonmetals82
- Ch.23 - Transition Metals and Coordination Chemistry79
- Ch.24 - The Chemistry of Life: Organic and Biological Chemistry16
Brown14th EditionChemistry: The Central ScienceISBN: 9780134414232Non è quello che usi tu?Cambia libro di testo
Capitolo 5, Problema 2a
The accompanying photo shows a pipevine swallowtail caterpillar climbing up a twig. (a) As the caterpillar climbs, its potential energy is increasing. What source of energy has been used to effect this change in potential energy?
Guida verificata passo dopo passo1
Identify the type of energy transformation involved when the caterpillar climbs up the twig. In this case, the caterpillar is converting one form of energy into another.
Understand that the caterpillar uses chemical energy stored in its body to fuel its movement. This chemical energy primarily comes from the food the caterpillar eats.
Recognize that as the caterpillar climbs, it performs work against the gravitational force, which results in an increase in its gravitational potential energy.
Consider the energy conversion process: the caterpillar's muscles use the stored chemical energy to generate mechanical energy, which is then used to move upwards against gravity.
Conclude that the source of energy used by the caterpillar to increase its potential energy as it climbs is the chemical energy stored in its body.
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Potential Energy
Potential energy is the energy stored in an object due to its position or configuration. In the case of the caterpillar climbing a twig, its height above the ground increases, which raises its gravitational potential energy. This energy can be converted into kinetic energy when the caterpillar moves downward.
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Percorso guidato
00:34
Kinetic & Potential Energy
Energy Transformation
Energy transformation refers to the process of changing energy from one form to another. In this scenario, the caterpillar converts chemical energy from the food it consumes into mechanical energy, allowing it to climb. This transformation is essential for the caterpillar to gain height and increase its potential energy.
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01:26Nature of Energy
Gravitational Force
Gravitational force is the attractive force between two masses, such as the Earth and the caterpillar. As the caterpillar climbs, it works against this force, which requires energy. The increase in potential energy is a direct result of the caterpillar's position relative to the gravitational pull of the Earth.
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06:44Types of Intermolecular Forces
Pratica correlata
Domanda del libro di testo
The contents of the closed box in each of the following illustrations represent a system, and the arrows show the changes to the system during some process. The lengths of the arrows represent the relative magnitudes of q and w. (a) Which of these processes is endothermic?
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Domanda del libro di testo
Consider the accompanying energy diagram. (a) Does this
diagram represent an increase or decrease in the internal energy
of the system?
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Domanda del libro di testo
Two positively charged spheres, each with a charge of 2.0⨉10-5 C, a mass of 1.0 kg, and separated by a distance of 1.0 cm, are held in place on a frictionless track. (a) What is the electrostatic potential energy of this system?
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