30.0 MB (1.8 MB compressed)
2648 x 3957 pixels
22.4 x 33.5 cm ⏐ 8.8 x 13.2 in (300dpi)
TREVOR CLIFFORD PHOTOGRAPHY / SCIENCE PHOTO LIBRARY TREVOR CLIFFORD PHOTOGRAPHY / SCIENCE PHOTO LIBRARY
Testing for saturated fat experiment. Student in a lab adding bromine water to sunflower oil to test for the presence of saturated fat. Saturated fat affects blood cholesterol and contributes to heart disease. When mixed with bromine water, unsaturated fats react with the bromine to decolourise the solution. In contrast, saturated fats do not react, leaving the solution a brown colour.
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