Physical properties of most importance include state of matter, viscosity, vapor pressure, purity, and concentration. The most important chemical properties of solvents are pH and polarity. An ...

You want to make sure that a battery plugged in the wrong way, or a polarity mistake with your bench PSU doesn’t damage that hardware. It’s easy enough to plop in a diode for protection ...

A substance that contains polar covalent bonds may not be overall polar. This is due to the shape of the molecule. Water molecules are polar molecules. Both of the bonds inside the molecule are ...

Welcome to the RTÉ Archives Acetate Disc Collection. The presentation of these recordings is a work in progress you are welcome to explore and listen here to the content as it is being added to ...

But have you ever wondered what plants and animals live in a polar habitatand how they survive in the cold? Well, wrap up warm, we're off to the Arctic Circle to find out! Brrr… It looks really ...

Less often, an alkyl or aryl halide is treated with a carboxylate salt. But these methods don’t work in the case of vinyl acetate and other vinyl esters because vinyl alcohols aren’t stable—they ...

Regenerated fibers such as cellulose and wood pulp are used to make materials such as rayon and acetate. Synthetic fibers are man made from chemicals ... fiber is spun from the polymer by wet or dry ...

Something big is happening to Earth’s climate, and the polar regions hold the key to understanding it. Join top scientists on the hunt for clues that tell a surprising story about our planet’s ...

Polar bears are the planet’s biggest land-based carnivores – although they actually spend most of their lives around water and ice (their Latin name means ‘sea bear’). So they’re at particular risk ...

A rare polar bear that was spotted outside a cottage in a remote village in Iceland was shot by police after being considered a threat, authorities said Friday. The bear was killed Thursday ...