pH Scale inquiry-based intro to acid-base

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Submission Information
Authors	Trish Loeblein
Contact Email	ploeblei@jeffco.k12.co.us
School / Organization	PhET and Evergreen HS
Submitted	09/04/06
Updated	13/04/07
Contribution Description
Title	pH Scale inquiry-based intro to acid-base
Simulations	Skala pH
Keywords	ph, phet, acid, base, ions, water, equilibrium
Description	This is an inquiry based activity to introduce pH. I plan to write a quantative activity soon. Learning goals: Determine if a solution is acidic or basic using pH; H3O+/OH- ratio (molecular size representation of just the ions in the water equilibrium);Hydronium/Hydroxide concentration 2.Relate liquid color to pH. 3.Predict if dilution and volume will increase, decrease or not change the pH 4.Organize a list of liquids in terms of acid or base strength in relative order with supporting evidence. 5.Write the water equilibrium expression. Describe how the water equilibrium varies with pH.
Level	Undergraduate - Intro, High School
Type	Concept Questions, Lab
Subject	Biology, Earth Science, Chemistry
Duration	60 minutes
Answers Included	No
Language	English

	Content Level
Content Standard	K-4	5-8	9-12
Science as Inquiry - A
Physical Science - B
Life Science - C
Earth & Space Science - D
Science & Technology - E
Science in Personal and Social Perspective - F
History and Nature of Science - G

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Reason for nomination

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