ChemCafe — science, chemistry and physics made simple

Why Doesn’t Bleach Remove Blood Completely from Clothes? Bleach cannot completely remove blood stains because it chemically alters but does not dissolve the iron in blood, while the fabric’s fine...

What’s Your Favorite Element and Why? Choosing a favorite chemical element depends on interest, utility, and unique properties. Many experts and enthusiasts favor elements like tungsten, carbon, lithium, iridium, and...

Cost of a GC/MS and LC/MS System The cost of Gas Chromatography-Mass Spectrometry (GC/MS) and Liquid Chromatography-Mass Spectrometry (LC/MS) systems varies widely, depending on the instrument type, brand, and technical...

A Powerful and Longlasting Stink Bomb A powerful and longlasting stink bomb uses chemicals with strong and persistent odors such as organic acids, thiols, and compounds like cadaverine to deliver...

Kids Chemistry Sets with the Most Fun (and Maybe Dangerous) Experiments Chemistry sets that balance fun and risk continue to attract kids, but their availability varies due to safety regulations....

How Influential Is Lord Ernest Rutherford in the Chemistry Community? Lord Ernest Rutherford is profoundly influential in the chemistry community. His groundbreaking discoveries, especially the identification of the atomic nucleus...

Safest Chemical for Dissolving PETG The safest chemical for dissolving PETG is dichloromethane (DCM), a chlorinated solvent widely recognized for its effectiveness and relatively lower health risks compared to other...