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BTB is an indicator that helps us to see if carbon dioxide or oxygen are present in a solution by changing colors. BTB is blue when mostly vis present, and yellowish-green when mostly vis present. This occurs because the indicator can sense the of the solution.

BTB is an indicator that helps us to see if carbon dioxide or oxygen are present in a solution by changing colors. BTB is blue when mostly vis present, and yellowish-green when mostly vis present. This occurs because the indicator can sense the of the solution.

Applications and Investigations in Earth Science (9th Edition)
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
Problem 1LR
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**Photosynthesis: Understanding the Process with BTB Indicator** **Instructions:** In this exercise, you will explore how the presence of carbon dioxide and oxygen in a solution can be detected using an indicator called BTB (Bromothymol Blue). **Experiment Overview:** 1. **BTB Functionality:** - **Color Indication:** - BTB is blue when mostly __(oxygen/CO2)__ is present. - BTB turns yellowish-green when mostly __(oxygen/CO2)__ is present. This color change occurs because the indicator can sense the acidity or basicity of the solution. 2. **Practical Application:** - In the experiment, a plant called Elodea is added to a test tube. Initially, the solution was __(color)__ but changed to __(color)__. - This transformation occurs because the process of photosynthesis turns __(CO2/oxygen)__ and __(H2O/solar energy)__ into the products __(glucose/oxygen)__ and __(waste/ATP)__. This experiment shows how matter is transformed from reactants into products, demonstrating the fundamental principle of photosynthesis.
Transcribed Image Text:**Photosynthesis: Understanding the Process with BTB Indicator** **Instructions:** In this exercise, you will explore how the presence of carbon dioxide and oxygen in a solution can be detected using an indicator called BTB (Bromothymol Blue). **Experiment Overview:** 1. **BTB Functionality:** - **Color Indication:** - BTB is blue when mostly __(oxygen/CO2)__ is present. - BTB turns yellowish-green when mostly __(oxygen/CO2)__ is present. This color change occurs because the indicator can sense the acidity or basicity of the solution. 2. **Practical Application:** - In the experiment, a plant called Elodea is added to a test tube. Initially, the solution was __(color)__ but changed to __(color)__. - This transformation occurs because the process of photosynthesis turns __(CO2/oxygen)__ and __(H2O/solar energy)__ into the products __(glucose/oxygen)__ and __(waste/ATP)__. This experiment shows how matter is transformed from reactants into products, demonstrating the fundamental principle of photosynthesis.
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