Chapter 5: Thermochemistry

studied byStudied by 4 people
5.0(1)
learn
LearnA personalized and smart learning plan
exam
Practice TestTake a test on your terms and definitions
spaced repetition
Spaced RepetitionScientifically backed study method
heart puzzle
Matching GameHow quick can you match all your cards?
flashcards
FlashcardsStudy terms and definitions
Get a hint
Hint

Energy

1 / 21

22 Terms

1

Energy

The ability to do work or transfer heat.

New cards
2

Change in Energy

\Delta E=E_{final}-E_{initial}

New cards
3

Thermodynamics

The study of energy and its transformations.

New cards
4

Thermochemistry

The study of chemical reactions and the energy changes involving heat.

New cards
5

First Law of Thermodynamics

Energy cannot be created or destroyed, only converted from one form to another.

New cards
6

Systems and Surroundings

The system is the portion of the universe under study, while the surroundings are everything else.

New cards
7

Types of Systems

Open System, Closed System, Isolated System.

New cards
8

Internal Energy

The sum of kinetic and potential energies of a system's components.

New cards
9

Changes in Internal Energy

Positive and negative changes indicate energy absorption or release.

\Delta E=q+w

New cards
10

Heat (q)

Energy exchanged between the system and surroundings.

New cards
11

Work (w)

Energy exchanged as work during a process.

New cards
12

Exchange of Heat Between System and Surroundings

Endothermic and exothermic processes.

New cards
13

State Functions

Internal energy is independent of the path taken to reach a state.

New cards
14

Work

Mechanical work associated with changes in gas volume.

New cards
15

Enthalpy

Internal energy plus the product of pressure and volume.

H=E+PV

New cards
16

Amount of Heat

q=mc\Delta T

New cards
17

Enthalpy of Reaction

Heat of reaction, dependent on reactants' and products' states.

New cards
18

Calorimetry

Measurement of heat flow.

New cards
19

Hess’s Law

Enthalpy change for an overall reaction equals the sum of changes for individual steps.

\Delta H=\sum n\Delta H_{f,products}-\sum m\Delta H_{f,reactan ts}^{°}

New cards
20

Enthalpies of Formation

Enthalpy change for forming a compound from its elements.

New cards
21

Bond Enthalpy

Energy required to break chemical bonds.

New cards
22

Bond Enthalpies and Enthalpy of Reaction

Predicting endothermic or exothermic reactions using bond energies.

\Delta H_{rxn}=\sum bonds\:broken-\sum bonds\:formed

New cards

Explore top notes

note Note
studied byStudied by 36 people
761 days ago
5.0(1)
note Note
studied byStudied by 20 people
136 days ago
5.0(2)
note Note
studied byStudied by 102 people
848 days ago
5.0(1)
note Note
studied byStudied by 8 people
857 days ago
4.0(1)
note Note
studied byStudied by 11 people
175 days ago
5.0(2)
note Note
studied byStudied by 19 people
730 days ago
5.0(1)
note Note
studied byStudied by 337 people
655 days ago
5.0(1)
note Note
studied byStudied by 6 people
727 days ago
5.0(1)

Explore top flashcards

flashcards Flashcard (28)
studied byStudied by 2 people
141 days ago
4.0(1)
flashcards Flashcard (47)
studied byStudied by 1 person
645 days ago
5.0(1)
flashcards Flashcard (292)
studied byStudied by 6 people
35 days ago
5.0(1)
flashcards Flashcard (122)
studied byStudied by 9 people
493 days ago
5.0(1)
flashcards Flashcard (23)
studied byStudied by 24 people
301 days ago
5.0(2)
flashcards Flashcard (80)
studied byStudied by 3 people
672 days ago
4.0(1)
flashcards Flashcard (24)
studied byStudied by 3 people
812 days ago
5.0(1)
flashcards Flashcard (260)
studied byStudied by 5 people
36 minutes ago
5.0(1)
robot