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1. Dictionary

   Re·ac·tion

   /rēˈakSH(ə)n/

   

   noun

   • 1. an action performed or a feeling experienced in response to a situation or event: "Carrie's immediate reaction was one of relief" Similar responseanswerreplyrejoinderretortripostefeedbackinformal:comebackclapback
   • ▪ a person's ability to respond physically and mentally to external stimuli: "a skilled driver with quick reactions"
   • ▪ an adverse physiological response to a substance that has been breathed in, ingested, or touched: "such allergic reactions as hay fever and asthma"
   • ▪ a chemical process in which two or more substances act mutually on each other and are changed into different substances, or one substance changes into two or more other substances.
   • ▪ an analogous transformation of atomic nuclei or other particles.
   • ▪ a mode of thinking or behaving that is deliberately different from previous modes of thought and behavior: "the work of these painters was a reaction against fauvism" Similar backlashcounteractionrecoil
   • ▪ opposition to political or social progress or reform: "the institution is under threat from the forces of reaction" Similar conservatismultra-conservatismthe rightthe right wingthe extreme rightcounter-revolutionrevanchism
   • ▪ repulsion or resistance exerted in opposition to the impact or pressure of another body; a force equal and opposite to the force giving rise to it.

   Word Origin late 16th century: from re- + action, originally suggested by medieval Latin reactio(n-), from react- ‘done again’ (see react).

   Derivatives

   • 1. reactionist noun

   Scrabble Points: 10

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2. brilliant.org › wiki › rate-of-chemical-reactionsRate of Chemical Reactions | Brilliant Math & Science Wiki

   brilliant.org › wiki › rate-of-chemical-reactions

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   2 days ago · Average rate of chemical reaction is defined as the change in number of moles of reactants and products in unit time for unit volume of reaction mixture. \[\text{Average rate of reaction} =\frac{\text{change in no. mole}}{\text{(volume)(time)}}\]

3. en.wikipedia.org › wiki › Rate_equationRate equation - Wikipedia

   en.wikipedia.org › wiki › Rate_equation

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   4 days ago · In chemistry, the rate equation (also known as the rate law or empirical differential rate equation) is an empirical differential mathematical expression for the reaction rate of a given reaction in terms of concentrations of chemical species and constant parameters (normally rate coefficients and partial orders of reaction) only. [1]

4. www.nagwa.com › en › explainersLesson Explainer: Reaction Rate | Nagwa

   www.nagwa.com › en › explainers

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   2 days ago · Definition: Rate of Reaction. The rate of reaction is the rate at which the reactants are converted into the products (usually expressed as mass per unit time or moles per unit time).

5. People also ask

   What is considered a reaction?

   • A reaction may be classified as redox in which oxidation and reduction occur or nonredox in which there is no oxidation and reduction occurring. Most simple redox reactions may be classified as combination, decomposition, or single displacement reactions.

   chemical reaction | Definition, Equations, Examples, & Types | Britannica

   www.britannica.com/science/chemical-reaction

   See all results for this question

   What does reaction mean in science?

   • What does physical reaction mean? A physical reaction occurs when molecules undergo a molecular rearrangement to produce a physical change. So, the difference is that with a physical reaction, a chemical change in the molecule is not observed, but a physical change is observed.

   What does reaction mean in the science term? - Quora

   www.quora.com/What-does-reaction-mean-in-the-science-term

   See all results for this question

   What is the meaning of reaction?

   • In psychology, reaction formation is a defense mechanism in which a person unconsciously replaces an unwanted or anxiety-provoking impulse with its opposite, often expressed in an exaggerated or showy way. A classic example is a young boy who bullies a young girl because, on a subconscious level, he's attracted to her.

   Reaction Definition in Chemistry - ThoughtCo

   www.verywellmind.com/reaction-formation-is-5190404

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6. www.nagwa.com › en › explainersLesson Explainer: Reversible and Irreversible Reactions | Nagwa

   www.nagwa.com › en › explainers

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   5 days ago · In this explainer, we will learn how to define reversibility in chemical reactions and identify examples of reversible and irreversible processes.

7. www.nagwa.com › en › explainersLesson Explainer: Reaction Time | Nagwa

   www.nagwa.com › en › explainers

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   2 days ago · Reaction time is the time taken for a human to respond to an incoming sensory signal. A classic experiment to measure your own reaction time requires only two things: a friend and a ruler. To perform it, have your friend hold the ruler at the very top and you hold your fingers at the zero mark.

8. www.merriam-webster.com › dictionary › in reaction toIn reaction to Definition & Meaning - Merriam-Webster

   www.merriam-webster.com › dictionary › in reaction to

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   May 8, 2024 · The meaning of IN REACTION TO is in response to. How to use in reaction to in a sentence.

9. en.wikipedia.org › wiki › Acid_dissociation_constantAcid dissociation constant - Wikipedia

   en.wikipedia.org › wiki › Acid_dissociation_constant

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   4 days ago · In chemistry, an acid dissociation constant (also known as acidity constant, or acid-ionization constant; denoted ) is a quantitative measure of the strength of an acid in solution. It is the equilibrium constant for a chemical reaction