Reactions & Rates

Reactions & Rates Screenshot
  • Reaction
  • Kinematics
  • Concentration
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Topics

  • Reaction
  • Kinematics
  • Concentration
  • Equilibrium

Description

Explore what makes a reaction happen by colliding atoms and molecules. Design experiments with different reactions, concentrations, and temperatures. When are reactions reversible? What affects the rate of a reaction?

Sample Learning Goals

  • Explain why and how a pinball shooter can be used to help understand ideas about reactions.
  • Describe on a microscopic level what contributes to a successful reaction (with illustrations).
  • Describe how the reaction coordinate can be used to predict whether a reaction will proceed or slow.
  • Use the potential energy diagram to determine: The activation energy for the forward and reverse reactions; The difference in energy between reactants and products; The relative potential energies of the molecules at different positions on a reaction coordinate.
  • Draw a potential energy diagram from the energies of reactants and products and activation energy.
  • Sketch how the number of reactants and products will change as a reaction proceeds.
  • Explain how they know that a system has reached equilibrium from a graph of number of reactants and products versus time.
  • Predict how raising or lowering the temperature will affect a system in the equilibrium position.
  • Describe the relative sizes of the forward and reverse rates at equilibrium.
  • Explain what effects whether the equilibrium position favors the products or the reactants.
  • Predict how addition of a reactant or product will affect the forward and reverse reaction rates, and once this new system reaches equilibrium how the reactant and product concentrations will compare to the original system at equilibrium.
  • Compare graphs of concentration vs. time to determine which represents the fastest or slowest rate.
Version 1.07

Teacher Tips

Download teacher tips PDF Overview of sim controls, model simplifications, and insights into student thinking ( PDF ).

Teacher-Submitted Activities

Concept questions for Physics using PhET (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 UG-Intro
HS
MC Physics
Using PhET in High School Chemistry- all my activities in pdf A gold star indicates high-quality, inquiry-based activities that follow the PhET design guidelines. This contribution was designed by PhET. Trish Loeblein UG-Intro
HS
Lab
Demo
HW
Chemistry
Concept Questions for Chemistry using PhET A gold star indicates high-quality, inquiry-based activities that follow the PhET design guidelines. This contribution was designed by PhET. Trish Loeblein HS
UG-Intro
MS
MC Chemistry
Reactions and Rates 4: Equilibrium LeChatlier A gold star indicates high-quality, inquiry-based activities that follow the PhET design guidelines. This contribution was designed by PhET. Trish Loeblein UG-Intro
HS
HW
Lab
Chemistry
Reactions and Rates 4 lessons (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 HS
UG-Intro
HW
Demo
CQs
Lab
Chemistry
Salts and Solubility 5 Activities in pdf A gold star indicates high-quality, inquiry-based activities that follow the PhET design guidelines. This contribution was designed by PhET. Trish Loeblein UG-Intro
HS
Other Chemistry
Earth Science
Reactions and Rates 3: Introduction to Equilibrium (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 HS
UG-Intro
Lab
CQs
HW
Chemistry
Reactions and Rates 2: Intro to Kinetics (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 UG-Intro
HS
CQs
Lab
HW
Chemistry
Reactions and Rates College version for tab 3- kinetics (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 UG-Adv Lab Chemistry
Reactions and Rates 1 Introduction to reactions (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 HS
UG-Intro
Demo
Lab
CQs
Chemistry
Exploring Equilibrium 2 (Le Chatelier's Principle) A gold star indicates high-quality, inquiry-based activities that follow the PhET design guidelines. Amy Jordan HS Lab Chemistry
Exploring Equilibrium A gold star indicates high-quality, inquiry-based activities that follow the PhET design guidelines. Amy Jordan HS Lab Chemistry
Kinetics Guided Inquiry A gold star indicates high-quality, inquiry-based activities that follow the PhET design guidelines. Chris Dewberry UG-Intro Other
HW
CQs
Lab
Reaction Rates A gold star indicates high-quality, inquiry-based activities that follow the PhET design guidelines. Emily Firchau HS Lab Chemistry
How do PhET simulations fit in my middle school program? This contribution was designed by PhET. Sarah Borenstein MS Other Physics
Biology
Chemistry
Earth Science
Alignment of PhET sims with NGSS This contribution was designed by PhET. Trish Loeblein updated by Diana López MS
HS
Other Physics
Chemistry
Biology
Earth Science
PhET Sims Aligned to the Chemistry Curriculum This contribution was designed by PhET. Julia Chamberlain HS
UG-Intro
Other Chemistry
Reactions and Rates: Learning Goals from the design team (Inquiry Based) This contribution was designed by PhET. Trish Loeblein, Linda Koch HS
UG-Intro
UG-Adv
Other Chemistry
MS and HS TEK to Sim Alignment Elyse Zimmer MS
HS
Other Chemistry
Physics
Biology
Understanding Rates of Reactions Lauren Petersen HS
UG-Intro
MS
HW
Lab
Guided
Chemistry
Reactions and Rates Jefferson County Middle School Workshop MS Lab Chemistry
LeChateilier's Principle - Concentration Robert Strauss HS Lab
PREPARATORIA: Alineación de PhET con programas de la DGB México (2017) This contribution was designed by PhET. Diana López UG-Intro
HS
Other Chemistry
Physics
Mathematics
반응과 반응속도 SIM 사용지침서 이화국(Wha Kuk Lee) UG-Intro
HS
Demo
Lab
Other
Biology
Chemistry

Language Download or Run Tips
Arabic All العربية Run now التفاعلات وسرعتها(معدلها)
Arabic (Saudi Arabia) All العربية (السعودية) Run now التفاعلات وسرعتها(معدلها)
Bashkir All Bashkir Run now Erreakzio-abiadura
Basque All Euskara Run now Erreakzioak eta abiadura
Bosnian All Bosanski Run now HEMIJSKE REAKCIJE I PROMJENE
Chinese (Simplified) All 中文 (中国) Run now 化学反应平衡
Chinese (Traditional) All 中文 (台灣) Run now Reactions & Rates 化學反應和反應速率
Croatian All hrvatski Run now Brzina reakcija
Czech All čeština Run now Reakce a ceny
Danish All Dansk Run now Reaktioner og størrelser
Dutch All Nederlands Run now Reacties en reactiesnelheid
Estonian All Eesti Run now Reaktsioonid ja nende hindamine
French All français Run now Réaction et cinétique
Galician All Gallegan Run now Reaccións e Rtos
Georgian All ქართული Run now რეაქციები და შედეგები
German All Deutsch Run now Reaktionen & Geschwindigkeiten
Greek All Ελληνικά Run now Αντιδράσεις και Ταχύτητα Αντίδρασης
Hebrew All עברית Run now תגובות וקצבים
Hungarian All magyar Run now Reakciók: sebesség & egyensúly
Indonesian All Bahasa Indonesia Run now Reaksi dan Tingkatannya
Italian All italiano Run now Reazioni e velocità di reazione
Japanese All 日本語 Run now 反応と速度
Kannada All Kannada Run now ರಾಸಾಯನಿಕ ಕ್ರಿಯೆ ಮತ್ತು ಪ್ರಮಾಣ
Kazakh All Kazakh Run now Реакцияның & шамалары
Khmer All Khmer Run now ប្រតិកម្ម និង​ល្បឿន
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Macedonian All македонски Run now ХЕМИСКИ РЕАКЦИИ И ПРОМЕНИ
Mongolian All Монгол (Монгол) Run now Урвал ба Тооцоо
Persian All فارسی Run now واكنش ها و سرعت ها
Polish All polski Run now Reakcje i ich szybkości
Portuguese All português Run now Reações & taxas
Portuguese (Brazil) All português (Brasil) Run now Reações e Taxas
Russian All русский Run now Скорость реакций
Serbian All Српски Run now ХЕМИЈСКЕ РЕАКЦИЈЕ И ПРОМЕНЕ
Slovak All Slovenčina Run now Reakcie & Hodnoty
Slovenian All Slovenščina Run now Reakcije in hitrosti reakcij
Spanish All español Run now Velocidades de reacción Download teacher tips PDF
Spanish (Mexico) All español (México) Run now Velocidades de reacción Download teacher tips PDF
Spanish (Peru) All español (Perú) Run now Velocidad de las Reacciones
Swahili All Swahili Run now majibu ya utendaji
Swedish All svenska Run now Reaktioner & reaktionshastigheter
Thai All ไทย Run now ปฏิกิริยาและอัตราการเกิดปฏิกิริยาเคมี
Turkish All Türkçe Run now Reaksiyonlar & Oranlar
Turkmen All Turkmen Run now Reaksiýalar we mukdarlar
Vietnamese All Tiếng Việt Run now Phản ứng và tốc độ phản ứng

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Design Team Third-party Libraries Thanks To
  • Linda Koch (lead)
  • Ron LeMaster (developer)
  • Trish Loeblein
  • Kathy Perkins
  • Interviewer: Mindy Gratny