In ancient Babylon, Egypt, Greece, and Rome, soap was being made by boiling animal fats and wood ashes in water. This practice was probably imported to Europe around the 6th century BC by the Phoenicians, merchants who used soap to wash the fabrics they traded for other goods. Despite this, the use of soap for…
Read more »
Fall shows us ‘the other’ colors of leaves. Hidden behind chlorophyll, the pervading green pigment of summer leaves, these colors begin to turn as autumn approaches. In this experiment, you will set out to uncover the leaves’ other pigments. To do so, you will apply a technique to separate substances called chromatography.
Read more »
