Vratné reakcie

Vratné reakcie Obrazovka  Stiahnuť  Kód na vloženie
  • Termodynamika
  • Teplota
  • Teplo

Témy

  • Termodynamika
  • Teplota
  • Teplo
  • Plyn
  • Reakcia
  • Tepelná energia

Popis

Watch a reaction proceed over time. How does total energy affect a reaction rate? Vary temperature, barrier height, and potential energies. Record concentrations and time in order to extract rate coefficients. Do temperature dependent studies to extract Arrhenius parameters. This simulation is best used with teacher guidance because it presents an analogy of chemical reactions.

Ukážkové ciele vzdelávania

  • Describe on a microscopic level, with illustrations, how reactions occur.
  • Describe how the motion of reactant molecules (speed and direction) contributes to a reaction happening.
  • Predict how changes in temperature, or use of a catalyst will affect the rate of a reaction.
  • On the potential energy curve, identify the activation energy for forward and reverse reactions and the energy change between reactants and products.
  • Sketch how the concentrations of reactants and products change as a reaction proceeds.
  • From a graph of concentration as a function of time, students should be able to identify when a system has reached equilibrium.
  • Calculate a rate coefficient from concentration and time data.
  • Determine how a rate coefficient changes with temperature.
  • Compare graphs of concentration versus time to determine which represents the fastest or slowest rate.
Verzia 3.15

Teacher-Submitted Activities

Entropy, Microstates, and Probability - Interactive Lecture Demonstration Guide A gold star indicates high-quality, inquiry-based activities that follow the PhET design guidelines. This contribution was designed by PhET. Ted Clark, Julia Chamberlain VŠ-zač Demo Chémia
Salts and Solubility 3: Solution Equilibrium and Ksp (Inquiry Based) A gold star indicates high-quality, inquiry-based activities that follow the PhET design guidelines. This contribution was designed by PhET. Trish Loeblein VŠ-zač
Lab
Otaz
Chémia
Inquiry Equilibrium activity A gold star indicates high-quality, inquiry-based activities that follow the PhET design guidelines. Joshua Manner Guided
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Chémia
Equilibrium Inquiry and Experiment Activity A gold star indicates high-quality, inquiry-based activities that follow the PhET design guidelines. Ryan White Lab Chémia
PhET Sims Aligned to the Chemistry Curriculum This contribution was designed by PhET. Julia Chamberlain
VŠ-zač
Iné Chémia
Alignment of PhET sims with NGSS This contribution was designed by PhET. Trish Loeblein Iné Veda o Zemi
Biológia
Fyzika
Chémia
How do PhET simulations fit in my middle school program? This contribution was designed by PhET. Sarah Borenstein ZŠ-II Iné Chémia
Veda o Zemi
Biológia
Fyzika
MS and HS TEK to Sim Alignment Elyse Zimmer
ZŠ-II
Iné Fyzika
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Biológia
Le Chatelier's Principle Demos Laura Conrad Lab
Demo
Otaz
Chémia
Basic Thermodynamics Inquiry Dan Kohler Otaz Chémia
가역반응 SIM 사용지침서 Wha Kuk Lee VŠ-zač
Lab
Iné
Chémia

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Autorský tím Iné knižnice Poďakovanie
  • Jack Barbera
  • Linda Koch (lead)
  • Ron LeMaster (developer)
  • Interviewer: Wendy Adams