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Learners identify an unknown liquid by comparing its behavior to known liquids. Learners drop liquids onto different surfaces and see how the liquids behave. Learners realize that using a combination of results from two or more tests will allow them to successfully identify the unknown. Use the related activity "Look-alike Liquids" from the same resource (see related resources) to introduce the behavior of the liquids on different surfaces. [Activity is publicly available through a web crawler capture on Archive.org. Activity write-up only, images are unavailable.]
- 5 to 10 minutes
- 30 to 45 minutes
- 1 cent - $1 per group of students
- Ages 8 - 14
- Activity, Experiment/Lab Activity
- English
Quick Guide
Materials List (per group of students)
- Tap water in cup
- Isopropyl rubbing alcohol (70%) in cup
- Detergent solution in cup
- Salt water in cup
- 1 Additional small cup
- 5 Droppers
- Construction paper
- Notebook paper, copy paper, or newspaper
- Brown paper towel
- Wax paper
- Pencil
- Student Activity Sheet
Subjects
-
Mathematics
-
Data Analysis and Probability
- Data Analysis
- Data Collection
-
Measurement
- Units of Measurement
-
Data Analysis and Probability
-
Physical Sciences
-
Chemistry
- Solutions
-
States of Matter
- Liquids
-
Chemistry
-
The Nature of Science
-
The Scientific Process
- About Inquiry
- Asking Questions
- Conducting Investigations
- Gathering Data
-
The Scientific Process
Audience
To use this activity, learners need to:
- see
- touch
Learning styles supported:
- Involves hands-on or lab activities
Other
Components that are part of this resource:
This resource is part of:
Access Rights:
- Free access
By:
- Kessler, James H. ; Galvan, Patricia M.
Rights:
- All rights reserved, American Chemical Society, 2007