Photosynthesis Lab: Elodea and Carbon Dioxide In this lab titled "The Elodea Took My Breath Away!" students will be able to "see" photosynthesis in action as colors change (or don't) using Elodea, bromothymol blue, and carbon dioxide.
Blood and Guts – The Lungs
Bromothymol Blue reacts to the acid in breath and changes from blue to yellow. Great experiment when studying the respiratory system!
In this activity 'Demonstrating Photosynthesis with Bromothymol Blue' students use Bromo blue to photosynthesis occurring. Students use the indicator to show the presence of Carbon Dioxide and the lack of its presence after it was used by a sprig of elodea.
Used with cresol red and methyl red for urine pH analysis, Bromothymol blue (also known as bromothymol sulfone phthalein and BTB) is a pH indicator. It is mostly used in applications that require measuring substances that would have a relatively neutral pH (near 7). A common use is for measuring the presence of carbonic acid in a liquid. It is typically sold in solid form as the sodium salt of the acid indicator.
An introduction to photosynthesis using Bromothymol blue and elodea. This lab is meant to be explored before teaching photosynthesis. This inquiry-based activity is hands-on for students and allows them to investigate photosynthesis by determining whether