154 questions and answers in this section

Natural Sciences » Chemistry

Explain why coffee can leave a residue at the bottom of the cup?

Explain why coffee can leave a residue at the bottom of the cup?

Coffee contains many chemical components such as caffeine, essential oils, acids (for example chlorogenic acid), proteins, as well as aromatic compounds that give coffee its...

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Explain why leather stretches when worn?

Explain why leather stretches when worn?

Leather is a natural material obtained by transforming animal hide, mainly bovine, but also ovine, caprine, or porcine. It is made up of collagen fibers, a protein...

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Explain why sheets smell better after being dried in the sun.

Explain why sheets smell better after being dried in the sun.

The sun has an effective action against a large number of microorganisms present on fabrics. When sheets dry in the sun, the ultraviolet (UV) rays...

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Explain why orange peels leave a lingering scent on your fingers?

Explain why orange peels leave a lingering scent on your fingers?

Orange peel mainly contains essential oils, responsible for their typical scent. One of the main compounds is limonene, a highly fragrant molecule that accounts for...

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