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rdf:type: yago:Property104916342 yago:ChemicalProperty105009758 yago:Attribute100024264 yago:WikicatChemicalProperties yago:Abstraction100002137
rdfs:label: Reaktywność chemiczna Хімічна реактивність Erreaktibotasun Reattività Reatividade Reactivity (chemistry) 반응성 Reactivitat química Reaktivität (Chemie) Reaktivitet Reactiviteit (scheikunde) تفاعلية Reactividad
rdfs:comment: Reaktywność chemiczna - zdolność związków i pierwiastków chemicznych do wejścia w reakcję chemiczną z innym związkiem lub pierwiastkiem. O reaktywności chemicznej mówi się zwykle w kontekście ogólnej zdolności określonego związku chemicznego lub pierwiastka do reagowania z pewną grupą innych pierwiastków lub związków w określonych warunkach. Np. większa reaktywność sodu w stosunku do litu wyraża się w tym, że sód w temperaturze pokojowej znacznie szybciej i gwałtowniej reaguje z wodą i kwasami niż lit. Хімічна реактивність — здатність речовини вступати у хімічну реакцію. Хімічна реактивність не є термодинамічною чи кінетичною величиною та використовується для якісного позначення інертності речовини або здатності її вступати у реакцію. Приклад: * За нормальних умов калій реагує з вологою повітря, проявляє при цьому високу хімічну реактивність. * Калій в атмосфері аргону чи під сухим петролейним етером не вступає у реакцію та проявляє незначну хімічну реактивність, отже він інертний. Con il termine reattività si intende la tendenza di una particolare specie chimica a reagire in presenza di altri particolari reagenti. Si parla quindi di reattività per una determinata sostanza chimica nei confronti di un altro determinato reagente.La reattività è una proprietà caratteristica della sostanza in esame, mentre la velocità di reazione fa riferimento ad una particolare reazione chimica. Quindi la velocità di reazione dipende (oltre alle condizioni dell'ambiente di reazione) da quanto sono reattive le specie chimiche che ne prendono parte. Il concetto opposto di reattività è stabilità: infatti tanto meno una sostanza è portata a reagire, tanto più essa è stabile (cioè mantiene inalterata la propria natura chimica). Reactiviteit is een fundamenteel en tegelijkertijd zeer breed interpreteerbaar begrip uit de scheikunde. Het verwijst in het algemeen naar de neiging van chemische verbindingen, functionele groepen, atomen of ionen om een chemische reactie aan te gaan. Zowel in de organische als de anorganische chemie speelt het verband tussen structuur en reactiviteit van moleculen een belangrijke rol, bijvoorbeeld het inzicht in bepaalde reacties en reactiemechanismen. De relatie tussen structuur en reactiviteit van organische verbindingen is het onderwerp van de fysische organische chemie. Erreaktibotasuna substantzia batek erreakzio kimiko bat jasatean erakusten duen erreakzio-abiadura da. Konposatu kimiko puruetan, erreaktibotasuna laginaren propietate fisikoen araberakoa da. Esaterako, substantzia bat ehotzen bada, bere azalera espezifikoa handitu egiten da eta bere erreaktibotasuna ere emendatu egiten da. Konposatu ezpuruetan, erreaktibotasunak ezpurutasunen eragina jasaten du. Konposatu kristalinoetan, forma kristalinoak eragina izan dezake erreaktibotasunean. Edozein kasutan, erreaktibotasunaren baldintzatzaile nagusia konposatuaren propietate dira. Reaktivitet är en benägenhet hos kemiska ämnen och föreningar att reagera kemiskt med andra kemiska ämnen och föreningar. Ett annat sätt att beskriva reaktivitet är att det innefattar den vetenskapliga studien av kemiska reaktioner och respektive reaktionskinetik. Ibland används även begreppet reaktivitet i syfte att beskriva hur snabbt ett ämne reagerar, det vill säga ämnets reaktionshastighet. Ju starkare reaktivitet ett ämne har, desto snabbare blir också reaktionshastigheten. De båda kemiska termerna är därför nära sammankopplade med varandra. Kemiska ämnen med låg reaktivitet kallas inerta. Det finns många olika faktorer som påverkar ett ämnes reaktivitet. I stor utsträckning handlar det om ämnets inneboende egenskaper. De mest reaktiva ämnena reagerar spontant och dessutom ofta explo En química, la reactividad de una especie química es su capacidad para reaccionar en presencia de otras sustancias químicas o reactivos (de diferente dominio químico). Se puede distinguir entre la reactividad termodinámica y la reactividad cinética. La primera distingue si la reacción está o no favorecida por entalpía (competencia entre energía y entropía), es decir si es una reacción espontánea o no. La segunda distingue si la reacción tendrá lugar o no en una escala de tiempo dada. In der Chemie ist Reaktivität die Fähigkeit eines Stoffes, eine chemische Reaktion einzugehen. Sie ist weder eine thermodynamische noch eine kinetische Größe, sondern eine qualitative Bezeichnung für die Stabilität oder Reaktionsfreudigkeit einer Substanz. Stabile Substanzen werden auch als wenig reaktionsfreudig klassifiziert. Beispiele: 화학에서 반응성(反應性, 영어: Reactivity)은 화학 물질이 자체적인 물질 또는 다른 물질과 함께 자극하여 일어나는 화학 반응을 통해 전체적인 에너지를 방출하는 화학적 성질이다. 반응성은 다음을 가리킨다. * 단일 물질의 화학적 반응 * 2개 이상의 물질이 서로 상호 작용하는 화학적 반응 * 서로 다른 두 종류의 반응에 대한 체계적인 연구 * 모든 종류의 화학 물질의 반응성 연구에 적용되는 방법론 * 이러한 과정을 관찰하는 데에 사용되는 실험적인 방법 * 이러한 과정을 예측하고 설명하기 위한 이론들 단일 물질(반응 물질)의 화학 반응도는 다음과 같은 작용을 포함한다. * 분해 * 다른 반응 물질 또는 반응 물질의 원자를 추가하여 새로운 물질을 형성함 * 2개 이상의 다른 반응 물질과 상호 작용하여 2개 이상의 물질을 형성함 물질의 화학 반응도는 서로 다른 물질이 반응하는 다양한 상황(온도, 압력, 촉매의 존재를 포함하는 조건)을 다음과 같이 나타낼 수 있다. * 반응하는 물질의 다양성 * 반응의 평형점 (즉, 모든 반응의 범위) * 반응 속도 반응도라는 용어는 화학적 안정성과 화학적 호환성의 개념과 관련이 있다. Em Química, reatividade consiste na tendência que uma reação química tem em acontecer. É um conceito qualitativo, mas pode ser quantificado pela atribuição de uma série de energias, definidas para condições particulares, tais como sob pressão constante, ou sob volume constante sendo um dos capítulos mais importantes da termodinâmica química.A reatividade consiste na tendência que um átomo possui para captar ou perder elétrons. La reactivitat química és l'expressió que es fa servir per valorar la capacitat d'un element o substància per reaccionar en presència d'altres substàncies (anomenades reactius) i formar una nova substància. Sempre que dos elements o substàncies reaccionen és degut al fet que entre els seus àtoms hi ha una afinitat o atracció química i els àtoms tendeixen a formar una altra espècie química mitjançant enllaços químics forts. التفاعلية معدل ميل المادة الكيميائية إلى التفاعل الكيميائي خلال الزمن. في المركبات النقية، تنظم التفاعلات وفق الخصائص الفيزيائية للعينات. على سبيل المثال، طحن عينة يزيد بشدة من المساحة السطحية النوعية مما يزيد التفاعلية. في المركبات غير النقية، تتأثر التفاعلية أيضا بوجود الشوائب. وفي المركبات البلورية، يمكن للشكل البلوري أن يؤثر أيضا على التفاعلية. ولكن في جميع الحالات، تكون التفاعلية نتيجة للخواص دون الذرية للمركب. وتزداد تفاعلية العناصر في الجدول الدوري الحديث كلما اتجهنا الي اسفل في المجموعه وتقل كلما اتجهنا الي اليمين في الدورة . In chemistry, reactivity is the impulse for which a chemical substance undergoes a chemical reaction, either by itself or with other materials, with an overall release of energy. Reactivity refers to: * the chemical reactions of a single substance, * the chemical reactions of two or more substances that interact with each other, * the systematic study of sets of reactions of these two kinds, * methodology that applies to the study of reactivity of chemicals of all kinds, * experimental methods that are used to observe these processes * theories to predict and to account for these processes.
dcterms:subject: dbc:Chemical_properties
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dbo:abstract: La reactivitat química és l'expressió que es fa servir per valorar la capacitat d'un element o substància per reaccionar en presència d'altres substàncies (anomenades reactius) i formar una nova substància. Sempre que dos elements o substàncies reaccionen és degut al fet que entre els seus àtoms hi ha una afinitat o atracció química i els àtoms tendeixen a formar una altra espècie química mitjançant enllaços químics forts. التفاعلية معدل ميل المادة الكيميائية إلى التفاعل الكيميائي خلال الزمن. في المركبات النقية، تنظم التفاعلات وفق الخصائص الفيزيائية للعينات. على سبيل المثال، طحن عينة يزيد بشدة من المساحة السطحية النوعية مما يزيد التفاعلية. في المركبات غير النقية، تتأثر التفاعلية أيضا بوجود الشوائب. وفي المركبات البلورية، يمكن للشكل البلوري أن يؤثر أيضا على التفاعلية. ولكن في جميع الحالات، تكون التفاعلية نتيجة للخواص دون الذرية للمركب. وتزداد تفاعلية العناصر في الجدول الدوري الحديث كلما اتجهنا الي اسفل في المجموعه وتقل كلما اتجهنا الي اليمين في الدورة . Reactiviteit is een fundamenteel en tegelijkertijd zeer breed interpreteerbaar begrip uit de scheikunde. Het verwijst in het algemeen naar de neiging van chemische verbindingen, functionele groepen, atomen of ionen om een chemische reactie aan te gaan. Zowel in de organische als de anorganische chemie speelt het verband tussen structuur en reactiviteit van moleculen een belangrijke rol, bijvoorbeeld het inzicht in bepaalde reacties en reactiemechanismen. De relatie tussen structuur en reactiviteit van organische verbindingen is het onderwerp van de fysische organische chemie. In der Chemie ist Reaktivität die Fähigkeit eines Stoffes, eine chemische Reaktion einzugehen. Sie ist weder eine thermodynamische noch eine kinetische Größe, sondern eine qualitative Bezeichnung für die Stabilität oder Reaktionsfreudigkeit einer Substanz. Stabile Substanzen werden auch als wenig reaktionsfreudig klassifiziert. Beispiele: 1. * Legt man elementares Kalium an normale Luft, reagiert es z. T. unter Entzündung mit der Luftfeuchtigkeit. Das Kalium hat eine hohe Reaktivität, ist reaktionsfreudig. 2. * Legt man es unter Argon oder Petrolether, erfolgt keine merkliche Reaktion. Unter Argon hat Kalium eine geringe Reaktivität, ist also stabil. 3. * Die Elemente der Edelgase sind besonders reaktionsträge. Da sie keine Verbindungen eingehen, liegen Edelgase immer elementar vor. Möchte man die Reaktivität über physikalische Größen beschreiben, so hängt sie thermodynamisch von der freien Enthalpie oder Gibbs-Energie ab. Diese gibt vereinfacht ausgedrückt an, wie viel Energie einem Stoff zur Freisetzung zur Verfügung steht, und ist eine Stoffeigenschaft. Die der Reaktivität entsprechende kinetische Größe bei einer Reaktion heißt Aktivierungsenergie. Dies ist grob gesagt die Energie, die aufgebracht werden muss, um eine Reaktion „in Gang zu bringen“ und bestimmt damit die Reaktionsgeschwindigkeit. Also beantwortet sie die Frage: „In welcher Zeit wird die Energie bei dieser Reaktion abgegeben?“ Con il termine reattività si intende la tendenza di una particolare specie chimica a reagire in presenza di altri particolari reagenti. Si parla quindi di reattività per una determinata sostanza chimica nei confronti di un altro determinato reagente.La reattività è una proprietà caratteristica della sostanza in esame, mentre la velocità di reazione fa riferimento ad una particolare reazione chimica. Quindi la velocità di reazione dipende (oltre alle condizioni dell'ambiente di reazione) da quanto sono reattive le specie chimiche che ne prendono parte. Il concetto opposto di reattività è stabilità: infatti tanto meno una sostanza è portata a reagire, tanto più essa è stabile (cioè mantiene inalterata la propria natura chimica). Em Química, reatividade consiste na tendência que uma reação química tem em acontecer. É um conceito qualitativo, mas pode ser quantificado pela atribuição de uma série de energias, definidas para condições particulares, tais como sob pressão constante, ou sob volume constante sendo um dos capítulos mais importantes da termodinâmica química.A reatividade consiste na tendência que um átomo possui para captar ou perder elétrons. 화학에서 반응성(反應性, 영어: Reactivity)은 화학 물질이 자체적인 물질 또는 다른 물질과 함께 자극하여 일어나는 화학 반응을 통해 전체적인 에너지를 방출하는 화학적 성질이다. 반응성은 다음을 가리킨다. * 단일 물질의 화학적 반응 * 2개 이상의 물질이 서로 상호 작용하는 화학적 반응 * 서로 다른 두 종류의 반응에 대한 체계적인 연구 * 모든 종류의 화학 물질의 반응성 연구에 적용되는 방법론 * 이러한 과정을 관찰하는 데에 사용되는 실험적인 방법 * 이러한 과정을 예측하고 설명하기 위한 이론들 단일 물질(반응 물질)의 화학 반응도는 다음과 같은 작용을 포함한다. * 분해 * 다른 반응 물질 또는 반응 물질의 원자를 추가하여 새로운 물질을 형성함 * 2개 이상의 다른 반응 물질과 상호 작용하여 2개 이상의 물질을 형성함 물질의 화학 반응도는 서로 다른 물질이 반응하는 다양한 상황(온도, 압력, 촉매의 존재를 포함하는 조건)을 다음과 같이 나타낼 수 있다. * 반응하는 물질의 다양성 * 반응의 평형점 (즉, 모든 반응의 범위) * 반응 속도 반응도라는 용어는 화학적 안정성과 화학적 호환성의 개념과 관련이 있다. Reaktivitet är en benägenhet hos kemiska ämnen och föreningar att reagera kemiskt med andra kemiska ämnen och föreningar. Ett annat sätt att beskriva reaktivitet är att det innefattar den vetenskapliga studien av kemiska reaktioner och respektive reaktionskinetik. Ibland används även begreppet reaktivitet i syfte att beskriva hur snabbt ett ämne reagerar, det vill säga ämnets reaktionshastighet. Ju starkare reaktivitet ett ämne har, desto snabbare blir också reaktionshastigheten. De båda kemiska termerna är därför nära sammankopplade med varandra. Kemiska ämnen med låg reaktivitet kallas inerta. Det finns många olika faktorer som påverkar ett ämnes reaktivitet. I stor utsträckning handlar det om ämnets inneboende egenskaper. De mest reaktiva ämnena reagerar spontant och dessutom ofta explosivt, medan ämnen med låg reaktivitet kan ta flera århundraden på sig att genomgå en viss reaktion. En química, la reactividad de una especie química es su capacidad para reaccionar en presencia de otras sustancias químicas o reactivos (de diferente dominio químico). Se puede distinguir entre la reactividad termodinámica y la reactividad cinética. La primera distingue si la reacción está o no favorecida por entalpía (competencia entre energía y entropía), es decir si es una reacción espontánea o no. La segunda distingue si la reacción tendrá lugar o no en una escala de tiempo dada. De esta forma, existen reacciones termodinámicamente favorables pero cinéticamente impedidas, como la combustión de grafito en presencia de aire. En casos así, la reacción se dará de una forma muy lenta o, directamente, no se producirá. Si una reacción se encuentra bloqueada cinéticamente, es posible lograr que se produzca alterando las condiciones de reacción o utilizando un catalizador. La química orgánica y la química inorgánica estudian la reactividad de los distintos compuestos. La fisicoquímica trata de calcular o predecir la reactividad de los compuestos, y de racionalizar los mecanismos de reacción. Reaktywność chemiczna - zdolność związków i pierwiastków chemicznych do wejścia w reakcję chemiczną z innym związkiem lub pierwiastkiem. O reaktywności chemicznej mówi się zwykle w kontekście ogólnej zdolności określonego związku chemicznego lub pierwiastka do reagowania z pewną grupą innych pierwiastków lub związków w określonych warunkach. Np. większa reaktywność sodu w stosunku do litu wyraża się w tym, że sód w temperaturze pokojowej znacznie szybciej i gwałtowniej reaguje z wodą i kwasami niż lit. Erreaktibotasuna substantzia batek erreakzio kimiko bat jasatean erakusten duen erreakzio-abiadura da. Konposatu kimiko puruetan, erreaktibotasuna laginaren propietate fisikoen araberakoa da. Esaterako, substantzia bat ehotzen bada, bere azalera espezifikoa handitu egiten da eta bere erreaktibotasuna ere emendatu egiten da. Konposatu ezpuruetan, erreaktibotasunak ezpurutasunen eragina jasaten du. Konposatu kristalinoetan, forma kristalinoak eragina izan dezake erreaktibotasunean. Edozein kasutan, erreaktibotasunaren baldintzatzaile nagusia konposatuaren propietate dira. In chemistry, reactivity is the impulse for which a chemical substance undergoes a chemical reaction, either by itself or with other materials, with an overall release of energy. Reactivity refers to: * the chemical reactions of a single substance, * the chemical reactions of two or more substances that interact with each other, * the systematic study of sets of reactions of these two kinds, * methodology that applies to the study of reactivity of chemicals of all kinds, * experimental methods that are used to observe these processes * theories to predict and to account for these processes. The chemical reactivity of a single substance (reactant) covers its behavior in which it: * Decomposes * Forms new substances by addition of atoms from another reactant or reactants * Interacts with two or more other reactants to form two or more products The chemical reactivity of a substance can refer to the variety of circumstances (conditions that include temperature, pressure, presence of catalysts) in which it reacts, in combination with the: * Variety of substances with which it reacts * Equilibrium point of the reaction (i.e., the extent to which all of it reacts) * Rate of the reaction The term reactivity is related to the concepts of chemical stability and chemical compatibility. Хімічна реактивність — здатність речовини вступати у хімічну реакцію. Хімічна реактивність не є термодинамічною чи кінетичною величиною та використовується для якісного позначення інертності речовини або здатності її вступати у реакцію. Приклад: * За нормальних умов калій реагує з вологою повітря, проявляє при цьому високу хімічну реактивність. * Калій в атмосфері аргону чи під сухим петролейним етером не вступає у реакцію та проявляє незначну хімічну реактивність, отже він інертний. Термодинамічно хімічна реактивність залежить від вільної ентальпії, енергії Гіббса, величин, які вказують, скільки енергії може виділити речовина при хімічній реакції. Кінетичною величиною хімічної реактивності виступає енергія активації — енергія, необхідна для вступу речовини в хімічну реакцію.
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