THE LIBRARY
Every experiment. Read it, or run it.
Full protocols with apparatus lists, safety notes, and the results you should expect — plus a live simulator on the same page, so reading and doing are one trip, not two.
5 of 19 experiments
Biology~50 min
Food tests: starch, sugars, protein and fat
Run iodine, Benedict's, biuret and emulsion tests, then identify a mystery food.
IGCSECBC
Biology~45 min
Microscopy: onion epidermal cells
Mount, stain and focus a real slide — then draw what you see at ×400.
IGCSECBC
Biology~35 min
Dye uptake in celery: does warmer water speed up the xylem stream?
Time dye moving up celery in ice-cold and warm water, and find the rate that warmth buys you.
IGCSE
Biology~55 min
Iodine clock: estimating hydrogen peroxide concentration by serial dilution
Time an iodine clock across a serial dilution, then read an unknown concentration off your own curve.
A-Level
Biology~60 min
Microscopy and stereology: a plant stem cross-section (slide J1)
Count vascular bundles in a sample sector and scale up to a whole-section density.
A-Level