pH Scale: Basics
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Topics
- pH
- Acids
- Bases
- Dilution
Description
Test the pH of everyday liquids such as coffee, spit, and soap to determine whether each is acidic, basic, or neutral. Investigate how adding more of a liquid or diluting with water affects pH.
Sample Learning Goals
- Determine if a solution is acidic, basic or neutral
- Place acids or bases in order of relative acidity or basicity
- Relate liquid color to pH
- Predict how solution volume or dilution with water will affect the pH of acids or bases
Teacher Tips
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Overview of sim controls, model simplifications, and insights into student thinking ( PDF ). |
Video Primer
Teacher-Submitted Activities
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Authors | Level | Type | Subject |
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| How Does Dilution Affect pH Levels of Acids and Bases? |
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Jocelyn Gianatasio | MS K-5 |
HW Lab |
Chemistry | |
| Alignment of PhET sims with NGSS |
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Trish Loeblein | HS | Other | Biology Physics Earth Science Chemistry |
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| How do PhET simulations fit in my middle school program? |
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Sarah Borenstein | MS | Other | Earth Science Biology Physics Chemistry |
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| MS and HS TEK to Sim Alignment | Elyse Zimmer | MS HS |
Other | Chemistry Physics Biology |
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| Exploring pH of Common Substances | Alexandra Freeman | MS HS |
Guided HW Lab |
Chemistry Other |
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| Discovering Acids and Bases | Jacalyn Fiechter | K-5 | Guided | Chemistry Physics |
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| Investigating the pH level of the 11 different basic substances | Mary Ann Patangan, Ivy Grace T. Coronel | MS K-5 |
Lab HW |
Chemistry | ||
| Preguntas de razonamiento para todas las simulaciones HTML5 |
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Diana López | MS UG-Intro HS Grad K-5 UG-Adv |
HW Discuss |
Physics Astronomy Mathematics Chemistry |
| ¿Cómo una disolución afecta los niveles de pH en ácidos y bases? |
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Joselyn Gianatasio, traducción Diana López | MS HS |
Guided | Chemistry | |
| Estudo do pH | Felipe Alves Silveira | HS MS |
Lab Discuss |
Chemistry | ||
| PLANO DE AULA PARA O ENSINO MÉDIO | Felipe Alves Silveira e Ana Karine Portela Vasconcelos | HS MS |
Guided | Chemistry |
The new HTML5 sims can run on iPads and Chromebooks, as well as PC, Mac, and Linux systems.
iPad:
iOS 11+ Safari
iPad compatible sims
Android:
Not officially supported. If you are using the HTML5 sims on Android, we recommend using the latest version of Google Chrome.
Chromebook:
Latest version of Google Chrome
The HTML5 and Flash PhET sims are supported on all Chromebooks.
Chromebook compatible sims
Windows Systems:
Microsoft Edge and Internet Explorer 11, latest version of Firefox, latest version of Google Chrome.
Macintosh Systems:
macOS 10.9.5+, Safari 9+, latest version of Firefox, latest version of Chrome.
Linux Systems:
Not officially supported. Please contact phethelp@colorado.edu with troubleshooting issues.
| Design Team | Third-party Libraries | Thanks To |
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