# Reakce a ceny

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• Reaction
• Kinematika
• Koncentrace
• Rovnováha

### 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?

### Příklady učebních cílů

• 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

 Učitelská příručka (pdf) obsahuje tipy poskytnuté od členů týmu PhET. ( PDF ).

### Teacher-Submitted Activities

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Arabic All العربية التفاعلات وسرعتها(معدلها)
Arabic (Saudi Arabia) All العربية (السعودية) التفاعلات وسرعتها(معدلها)
Bashkir All Bashkir Erreakzio-abiadura
Basque All Euskara Erreakzioak eta abiadura
Bosnian All Bosanski HEMIJSKE REAKCIJE I PROMJENE
Croatian All hrvatski Brzina reakcija
Danish All Dansk Reaktioner og størrelser
Dutch All Nederlands Reacties en reactiesnelheid
English All English Reactions & Rates
Estonian All Eesti Reaktsioonid ja nende hindamine
French All français Réaction et cinétique
Gallegan All Gallegan Reaccións e Rtos
Georgian All ქართული რეაქციები და შედეგები
German All Deutsch Reaktionen & Geschwindigkeiten
Greek All Ελληνικά Αντιδράσεις και Ταχύτητα Αντίδρασης
Hebrew All עברית תגובות וקצבים
Hungarian All magyar Reakciók: sebesség & egyensúly
Chinese (China) All 中文 (中国) 化学反应平衡
Chinese (Taiwan) All 中文 (台灣) Reactions & Rates 化學反應和反應速率
Indonesian All Bahasa Indonesia Reaksi dan Tingkatannya
Italian All italiano Reazioni e velocità di reazione
Japanese All 日本語 反応と速度
Kannada All Kannada ರಾಸಾಯನಿಕ ಕ್ರಿಯೆ ಮತ್ತು ಪ್ರಮಾಣ
Kazakh All Kazakh Реакцияның & шамалары
Khmer All Khmer ប្រតិកម្ម និង​ល្បឿន
Korean All 한국어 반응과 반응속도
Macedonian All македонски ХЕМИСКИ РЕАКЦИИ И ПРОМЕНИ
Mongolian All Монгол (Монгол) Урвал ба Тооцоо
Persian All فارسی واكنش ها و سرعت ها
Polish All polski Reakcje i ich szybkości
Portuguese All português Reações & taxas
Portuguese (Brazil) All português (Brasil) Reações e Taxas
Russian All русский Скорость реакций
Serbian All Српски ХЕМИЈСКЕ РЕАКЦИЈЕ И ПРОМЕНЕ
Slovak All Slovenčina Reakcie & Hodnoty
Slovenian All Slovenščina Reakcije in hitrosti reakcij
Spanish All español Velocidades de reacción
Spanish (Mexico) All español (México) Velocidades de reacción
Spanish (Peru) All español (Perú) Velocidad de las Reacciones
Swahili All Swahili majibu ya utendaji
Swedish All svenska Reaktioner & reaktionshastigheter
Thai All ไทย ปฏิกิริยาและอัตราการเกิดปฏิกิริยาเคมี
Turkish All Türkçe Reaksiyonlar & Oranlar
Turkmen All Turkmen Reaksiýalar we mukdarlar
Vietnamese All Tiếng Việt Phản ứng và tốc độ phản ứng
Windows Macintosh Linux
Microsoft Windows
XP/Vista/7/8.1/10