Abstract. NERY, Alessandro Ranulfo Lima and BASSI, Adalberto Bono Maurizio Sacchi. A primeira lei da termodinâmica dos processos homogêneos. Quím. Educação. SOBRE A PRIMEIRA LEI DA TERMODINÂMICA. Ney Henrique Moreira e Adalberto Bono Maurizio Sacchi Bassi* Instituto de Química, Universidade. (10) Física e Química A – Primeira Lei da Termodinâmica. No description. by. Nathaly Rodrigues. on 13 November Comments (0). Please log in to add.

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(10) Física e Química A – Primeira Lei da Termodinâmica by Nathaly Rodrigues on Prezi

Thermodynamics, the study of the transformations of energy, enables us to discuss all these matters quantitatively and to make useful predictions. A molecule has a certain number of degrees of freedom, such as the primeira lei da termodinamica to translate the motion of primeira lei da termodinamica centre of mass through spacerotate around its centre of mass, or vibrate as its bond lengths and angles change. For example, a closed system can expand and thereby raise a weight in the surroundings; it may also transfer energy to them if they are at a lower temperature.

Send the link below via email or IM. Do you really want to delete this prezi? The basic concepts For the purposes of physical chemistry, the universe is divided into two parts, the system and its surroundings.

An exothermic process in a similar diathermic container results in a release of energy as heat into the surroundings.

Differential scanning calorimetry 2. Invited audience members will follow primeira lei da termodinamica as you navigate and present People invited to a presentation do not need a Prezi account This link expires 10 minutes after you close the presentation Primeira lei da termodinamica maximum of 30 users can follow your presentation Learn more about this feature in our knowledge base article. Doing work is equivalent to raising a weight somewhere in the surroundings.


Delete comment or cancel. It may termodinmaica a reaction vessel, an engine, an electrochemical cell, a biological cell, and so on.

Primeira lei da termodinâmica

For example, a chemical bond might break if a lot primeira lei da termodinamica energy becomes concentrated in it. Present to your audience. Calories cal and kilocalories kcal are still encountered. Check out this article to learn more or contact your system administrator.

Adiabatic processes Further information 2. It concentrates on the conservation of energy—the experimental observation that energy can be neither created nor destroyed—and shows how the principle of the leu of energy can be used to assess the primeira lei da termodinamica changes that accompany physical and chemical processes.

The fundamental physical property in thermodynamics is work: Joule, is defined as. The current definition of the calorie in terms of joules is. Many physical and chemical properties depend on the energy associated with each of these modes of motion. Changing any one of the state variables, such as the pressure, results in a change primeira lei da termodinamica internal energy. See more popular or the latest prezis. When an endothermic process takes place in an adiabatic container, it results in a lowering primeira lei da termodinamica temperature of the system; an exothermic process results in a rise of temperature.


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The surroundingscomprise the region outside the system and are where we make our measurements. The disorderly motion of molecules is called thermal motion. Thus, the energy to remove an electron from a sodium atom is close to 5 eV.

The internal energy is the total kinetic and potential energy of the molecules in the system see Comment 1.

Present to your audience Start remote presentation. These features are summarized in Fig. Send this link to let others join your presentation: In other words, it primeira lei da termodinamica a function of the primeira lei da termodinamica that determine the current state of the system.

An exothermic process is primeirra process prineira releases energy as heat into its surroundings.

An intensive property is a property that is independent of the amount of substance in the sample. Food and energy reserves 2. We observe the falling weight, the orderly descent of its atoms, primeira lei da termodinamica report that work is being done even though it is stimulating thermal motion. Both open and closed systems can exchange energy with their surroundings. All combustion reactions are exothermic.