activation energy
- noun
- /ˌæktɪˈveɪʃən ˈɛnədʒi/
- Specialized
:
energía de activación
- And the oxygen vacancies may work as active sites in DRM reactions and lower their apparent activation energy.
- low-activation energy
Thinking about the hypothetical reaction A&B; yield C&D; having activation energy EA suggest what that twist might be.
- Thinking about the hypothetical reaction A&B; yield C&D; having activation energy EA suggest what that twist might be.
Examples
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What I'm going to show you now is an explosive that has a very low activation energy, not so low that it goes off spontaneously, but almost.
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And in between is this activation energy barrier that we call EACT.
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So we have the activation energy F for forward direction.
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Take, for instance, a relative energy change E, such as bond energy or activation energy.
Academic text (2001) -
The error in activation energy is 2.3 kcal/mol, which is significantly less than the error of 4.4 kcal/mol for MP4:HF:MM3.
Academic text (2001) -
The low-activation-energy ketal offers several distinct advantages over conventional positive-tone CA resists.
Academic text (2001) -
Most recently, our research efforts have been focused on a low-activation-energy chemically amplified resist based on ketal-protected poly(hydroxystyrene).
Academic text (2001) -
In Table 4, we summarize the IMOMO(G2MS:MP2) results for Diels-Alder reactions for which experimental activation energies are available.
Academic text (2001) -
Lowering the activation energy allows more particles to react at a given temperature.
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A higher activation energy means that fewer molecules will have enough energy to react.
Synonyms
The smallest amount of energy atoms or molecules need to start a chemical reaction
Surface Forms
Morphology
The meaning is a direct composition of 'activation' (the process of initiating) and 'energy' (power required), so a learner who knows both constituents can infer 'the energy required to start something.' This term is used both in chemistry and metaphorically with the same logic, and similar constructions exist in many languages, making the sense predictable rather than idiomatic.
Etymology
Activation energy creates the image of a hill that tiny particles must climb to react. Imagine a small ball that needs a push to roll over the top of a hill. That first push is the activation energy, so the term means the minimum energy needed 'to react'.
