Organic chemistry · Grade 11
Benedict’s test for glucose
ChemAI · Worksheet
NameClassDate
Aim
A reducing sugar turns Benedict’s reagent brick red.
Before you start: what do you predict will happen? Why?
What you do
| Step | What I observed | |
|---|---|---|
| 1 | Add Benedict’s reagent to both tubes. | |
| 2 | Put tube 1 in the hot water bath (Apparatus → Water bath, about 80 °C). | |
| 3 | Put tube 2 in the water bath too. Starch is not a reducing sugar: what do you see? |
Questions
- Write a word or symbol equation for one reaction you observed.
- Explain your most important observation using particles, ions or energy.
- Was your prediction right? What would you change to get a more reliable result?