pH Scale

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pH
Dilution
Concentration

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Original Sim and Translations

Topics

pH
Dilution
Concentration
Acids
Bases

Description

Test the pH of things like coffee, spit, and soap to determine whether each is acidic, basic, or neutral. Visualize the relative number of hydroxide ions and hydronium ions in solution. Switch between logarithmic and linear scales. Investigate whether changing the volume or diluting with water affects the pH. Or you can design your own liquid!

Sample Learning Goals

Determine if a liquid is acidic, basic, or neutral
Place acids or bases in relative order
Describe on a molecular scale, with illustrations, how the water equilibrium varies with pH
Determine concentration of hydroxide, hydronium and water at a given pH
Relate liquid color to pH
Predict (qualitatively and quantitatively) how dilution and volume will affect the pH and concentration of hydroxide, hydronium and water

Version 1.3.4

Teacher Tips

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

Video Primer

Teacher-Submitted Activities


pH Scale inquiry-based intro to acid-base	Trish Loeblein	HS MS UG-Intro	Lab Remote HW MC	Earth Science Chemistry Biology
Concept questions for Physics using PhET (Inquiry Based)	Trish Loeblein	UG-Intro HS	MC	Physics
How do PhET simulations fit in my middle school program?	Sarah Borenstein	MS	Other	Chemistry Physics Biology Earth Science
PhET Sims Aligned to the Chemistry Curriculum	Julia Chamberlain	HS UG-Intro	Other	Chemistry
pH Learning Goals by developement team (Inquiry Based)	Trish Loeblein, Laurie Langdon	Other	Other	Chemistry
Effects of pH	Marquita Watkins	UG-Intro	HW Guided Lab	Biology Chemistry
Ácidos e bases	Caio Rômulo Freitas Silva; Caroline de Goes Sampaio	HS	Demo	Chemistry
MS and HS TEK to Sim Alignment	Elyse Zimmer	HS MS	Other	Physics Biology Chemistry
Investigation of Acids & pH	Jon Tietz	HS	Guided Lab HW	Chemistry
On the molecular level, what is the difference between acids and bases?	Chris Justus	HS	Guided	Chemistry
What effect does dilution of an acid or base have on the pH of the solution?	Chris Justus	HS	Guided	Chemistry
Student Guide for PhET - pH Scale in html5	Brian Libby	MS HS	HW Guided	Chemistry
pH Scale Guided Inquiry Activity	Tony Tracy	HS UG-Intro	HW Lab Guided	Chemistry
Exploring the pH Scale	Lyric Portwood	MS HS	Guided	Chemistry
Introduction to acids & bases	Donna Brewster	HS	Guided	Chemistry
Preguntas de razonamiento para todas las simulaciones HTML5	Diana López	UG-Intro MS Grad HS UG-Adv K-5	HW Discuss	Chemistry Astronomy Mathematics Physics
Escala de pH, introducción a ácidos y bases con indagación	Trish Leoblien, traducción de Diana López	MS HS UG-Intro	Guided MC	Chemistry
¿Cómo una disolución afecta los niveles de pH en ácidos y bases?	Joselyn Gianatasio, traducción Diana López	MS HS	Guided	Chemistry
SECUNDARIA: Alineación PhET con programas de la SEP México (2011 y 2017)	Diana López	MS HS	Other	Biology Mathematics Chemistry Physics
PREPARATORIA: Alineación de PhET con programas de la DGB México (2017)	Diana López	HS UG-Intro	Other	Chemistry Physics Mathematics
EXERCÍCIO DE VERIFICAÇÃO DE CARACTERÍSTICAS ÁCIDO BASE	Marcelo Guerra	MS	HW Discuss	Chemistry
Indicador de pH de substâncias do cotidiano.	Antonio Marley de Araújo Stedile, Maria Cleide da Silva Barroso	UG-Intro HS MS	Demo Guided HW Lab	Chemistry
Logaritmo e Função Logaritmo	Wedson Francelino Ribeiro Noronha, Francisco Régis Vieira Alves	HS UG-Intro	Discuss Lab	Mathematics
Atividade de simulação de Ácidos e Bases	Marcelo Henrique Freitas Saraiva Guerra; Ana Karine Portela Vasconcelos	MS	Guided	Chemistry

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Language
Albanian	All shqip	Shkalla e pH
Arabic	All العربية	pH Scale
Arabic (Saudi Arabia)	All العربية (السعودية)	pH مقياس
Basque	All Euskara	pH eskala
Bosnian	All Bosanski	pH skala
Bulgarian	All български	Скала pH
Chinese (Simplified)	All 中文 (中国)	PH值
Chinese (Traditional)	All 中文 (台灣)	pH Scale_酸鹼性
Croatian	All hrvatski	pH skala
Czech	All čeština	pH stupnice
Danish	All Dansk	pH-skala
Dutch	All Nederlands	pH schaal
Estonian	All Eesti	pH skaala
Finnish	All suomi	pH-asteikko
French	All français	pH Scale
Galician	All Gallegan	Escala pH
Georgian	All ქართული	pH სკალა
German	All Deutsch	pH Skala
Greek	All Ελληνικά	Κλίμακα pH
Hebrew	All עברית	סולם pH
Hindi	All हिंदी	pH माप
Hungarian	All magyar	pH skála
Indonesian	All Bahasa Indonesia	Skala pH
Irish	All Gaeilge	Scála pH
Italian	All italiano	Scala del pH
Japanese	All 日本語	pHの測定
Kannada	All Kannada	pH ನ ಪ್ರಮಾಣ
Kazakh	All Kazakh	pH:шәкіл
Korean	All 한국어	pH 척도
Latvian	All Latviešu	pH skala
Macedonian	All македонски	рН Скала
Marathi	All मराठी	pH (सामु) मापन
Mongolian	All Монгол (Монгол)	pH Хуваарь
Norwegian Bokmal	All Norsk bokmål	pH-skala
Norwegian Nynorsk	All Norwegian Nynorsk	pH-skala
Oriya	All Oriya	pH ସ୍କେଲ୍
Persian	All فارسی	pH مقیاس
Polish	All polski	Skala pH
Portuguese	All português	Escala de pH
Portuguese (Brazil)	All português (Brasil)	Escala de pH
Russian	All русский	Шкала pH
Serbian	All Српски	pH Скала
Sinhalese	All Sinhalese	pH පරිමාණය
Slovak	All Slovenčina	pH škála
Slovenian	All Slovenščina	pH lestvica
Spanish	All español	Escala de pH
Spanish (Mexico)	All español (México)	Escala de pH
Spanish (Peru)	All español (Perú)	Escala de pH
Spanish (Spain)	All español (España)	Escala de pH
Swahili	All Swahili	pH Scale
Swedish	All svenska	pH-skala
Tamil	All Tamil	pH பெறுமானம்
Thai	All ไทย	ค่า pH
Turkish	All Türkçe	pH Ölçeği
Turkmen	All Turkmen	pH şkala
Ukrainian	All українська	Шкала pH
Vietnamese	All Tiếng Việt	Thang đo pH

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iPad:
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Not officially supported. If you are using the HTML5 sims on Android, we recommend using the latest version of Google Chrome.

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Latest version of Google Chrome
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Chromebook compatible sims

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Microsoft Edge, latest version of Firefox, latest version of Google Chrome.

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macOS 10.9.5+, Safari 9+, latest version of Chrome.

Linux Systems:
Not officially supported. Please contact phethelp@colorado.edu with troubleshooting issues.

Design Team	Third-party Libraries	Thanks To
Yuen-ying Carpenter (lead) Chris Malley (developer) Emily B. Moore Ariel Paul Julia Chamberlain Kathy Perkins Patricia Loeblein Sharon Siman-Tov (graphic arts)	almond-0.2.9.js base64-js-1.2.0.js FileSaver-b8054a2.js font-awesome-4.5.0 game-up-camera-1.0.0.js he-1.1.1.js himalaya-0.2.7.js jama-1.0.2 jquery-2.1.0.js lodash-4.17.4.js pegjs-0.7.0.js seedrandom-2.4.2.js text-2.0.12.js TextEncoderLite-3c9f6f0.js	Royal Society of Chemistry

pH Scale

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