Virtual Food Tests Lab | Myers Science Hub

1. Student details and learning goals

Student name

Student ID

Class

Date

Success criteria: Choose the correct reagent and procedure, identify positive and negative results, distinguish observations from conclusions, and explain how controls improve reliability.

Safety: This is a simulation, not permission to handle chemicals unsupervised. In a real laboratory, ethanol is flammable; Benedict's test requires a supervised hot-water bath, not direct flame. Wear eye protection and follow teacher instructions.

2. Test reference

Nutrient	Reagent / method	Positive observation	Negative observation
Starch	Add iodine solution	Blue-black	Yellow-brown
Reducing sugar	Add Benedict's solution and heat in hot-water bath	Green / yellow / orange / brick-red precipitate	Blue
Protein	Add Biuret reagent	Lilac / purple	Blue
Lipid	Shake sample with ethanol, then add water	Cloudy white emulsion	Clear

Food samples use simplified teaching compositions; real foods vary by processing and concentration. Benedict's colour depends on reducing-sugar concentration.

3. Virtual investigation

Choose food sample

Choose biochemical test

Prediction (what result do you expect?)

Reason for your prediction

Choose a sample and test, then prepare the sample.

Ready for a sample

What you observe

No test performed yet.

Interpretation

Complete the procedure to reveal the result.

4. Results table

Results are automatically recorded when you finish a test. Repeat tests for different food samples. Add your own notes if needed.

Sample	Test	Prediction	Observation	Conclusion	Notes
No observations recorded yet.

5. IGCSE analysis and evaluation

6. Submit your work

Save your work regularly. Download the TXT file to retain all written responses without PDF clipping. Use the PDF for a printable copy.

Progress is stored in this browser only. Download your TXT file before switching devices or clearing browser data.