Natural Indicators
Contributed By
- Original Source:Oregon Museum of Science and Industry
Conditions of Use:None Specified
Description
Visitors combine different plant solutions -- made from fruits, vegetables, and flowers -- with equal amounts of vinegar (acid), water (neutral), and ammonia (base). They compare the color changes of each plant solution in each of the three solutions. Visitors learn that plant color often depends on acid/base balances. This can be related to the idea that living systems must maintain a constant pH to survive, and that many plants require a specific pH in the environment to grow. This activity is currently used in the Biochemistry and Envrionmental Chemistry Units in OMSI's Chemistry Lab. Cost estimates are per 100 students. Less
Learning Registry Activity
Bookmarks
Topics and Grades
Grade: TK/K to 12
Topics: Structure and Function in Living Things, Life Sciences, Chemistry, Agriculture & Natural Resources, Earth & Space Science, Physics, Biochemistry, Acids & Bases
Resource Pedagogy
Resource Type/Classification:
- Teacher Materials
Tool for: Students