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published by the Science House
educational validator: Sharon Schulze
This page features an experiment designed to help secondary science students differentiate physical and chemical change. Using easily-acquired materials (baking soda, cabbage juice, and calcium chloride), students will investigate reactions that happen inside four sealed plastic bags. Their task is to determine whether the changes are chemical or physical (the experiment provides two of each).  

CAUTION: This experiment is, overall, safe for young adolescents. However, plastic bags expand, so care should be exercised to prevent excessive pressure build-up that could result in bursting. In addition, when calcium chloride is dissolved in water, heat is given off. These solutions should be handled with gloves.

The Science House is a project based at North Carolina State University. It sponsors teacher training programs, curriculum development, web-based experiments for use in K-12 classrooms, long-term loans of laboratory equipment, summer student research programs, and community outreach.
Subjects Levels Resource Types
Education Practices
- Active Learning
= Inquiry Learning
General Physics
- Properties of Matter
Other Sciences
- Chemistry
- Middle School
- High School
- Instructional Material
= Activity
= Laboratory
Intended Users Formats Ratings
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- text/html
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Safety Warnings
Eye Protection Must be Worn   Safety Gloves Must be worn   Hot Liquids  


Access Rights:
Free access
License:
This material is released under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 license.
Rights Holder:
The Science House,
Keywords:
chemical change, chemical reaction, chemistry labs, closed system, physical change, solubility, solutions
Record Cloner:
Metadata instance created April 29, 2011 by Caroline Hall
Record Updated:
August 3, 2016 by Lyle Barbato
Last Update
when Cataloged:
December 31, 2010
Other Collections:

AAAS Benchmark Alignments (2008 Version)

4. The Physical Setting

4D. The Structure of Matter
  • 6-8: 4D/M4. The temperature and acidity of a solution influence reaction rates. Many substances dissolve in water, which may greatly facilitate reactions between them.
  • 6-8: 4D/M11. Substances react chemically in characteristic ways with other substances to form new substances with different characteristic properties.
  • 6-8: 4D/M12. If samples of both the original substances and the final substances involved in a chemical reaction are broken down, they are found to be made up of the same set of elements.

11. Common Themes

11A. Systems
  • 6-8: 11A/M1. A system can include processes as well as things.
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Record Link
AIP Format
(Science House, Raleigh, 2010), WWW Document, (https://sciencehouse.ncsu.edu/educators/k-12-instructors/lesson-plans/countertop-chemistry/ziptop-bag-chemistry-experiment-5/).
AJP/PRST-PER
Countertop Chemistry: Ziptop Bag Chemistry (Science House, Raleigh, 2010), <https://sciencehouse.ncsu.edu/educators/k-12-instructors/lesson-plans/countertop-chemistry/ziptop-bag-chemistry-experiment-5/>.
APA Format
Countertop Chemistry: Ziptop Bag Chemistry. (2010, December 31). Retrieved May 19, 2024, from Science House: https://sciencehouse.ncsu.edu/educators/k-12-instructors/lesson-plans/countertop-chemistry/ziptop-bag-chemistry-experiment-5/
Chicago Format
Science House. Countertop Chemistry: Ziptop Bag Chemistry. Raleigh: Science House, December 31, 2010. https://sciencehouse.ncsu.edu/educators/k-12-instructors/lesson-plans/countertop-chemistry/ziptop-bag-chemistry-experiment-5/ (accessed 19 May 2024).
MLA Format
Countertop Chemistry: Ziptop Bag Chemistry. Raleigh: Science House, 2010. 31 Dec. 2010. 19 May 2024 <https://sciencehouse.ncsu.edu/educators/k-12-instructors/lesson-plans/countertop-chemistry/ziptop-bag-chemistry-experiment-5/>.
BibTeX Export Format
@misc{ Title = {Countertop Chemistry: Ziptop Bag Chemistry}, Publisher = {Science House}, Volume = {2024}, Number = {19 May 2024}, Month = {December 31, 2010}, Year = {2010} }
Refer Export Format

%T Countertop Chemistry: Ziptop Bag Chemistry %D December 31, 2010 %I Science House %C Raleigh %U https://sciencehouse.ncsu.edu/educators/k-12-instructors/lesson-plans/countertop-chemistry/ziptop-bag-chemistry-experiment-5/ %O text/html

EndNote Export Format

%0 Electronic Source %D December 31, 2010 %T Countertop Chemistry: Ziptop Bag Chemistry %I Science House %V 2024 %N 19 May 2024 %8 December 31, 2010 %9 text/html %U https://sciencehouse.ncsu.edu/educators/k-12-instructors/lesson-plans/countertop-chemistry/ziptop-bag-chemistry-experiment-5/


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The AIP Style presented is based on information from the AIP Style Manual.

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