7.2K views · 318 reactions | Here's a quick, simplified version of how photosynthesis works. | Reactions | Facebook

Observe photosynthesis & respiration! This classic lab has students working with bromothymol blue (BTB), which is a pH indicator. By blowing into the solution, the carbon dioxide causes the solution to change color. Students test two variables- the addition of plants and the addition of sunlight to determine how these factors can cause the solution to shift back to blue as the carbon dioxide is absorbed. ➡️Want to see all the lab details? Comment “BTB” to get the link for this engaging lab! #sci