A large energy change – Many chemical reactions give off lots of energy, like burning, and a few absorb energy, so they feel cold. A new substance must be produced for a chemical reaction to ...

What long has been considered merely a chemical reaction perhaps is best compared to another all-too-familiar scourge — a virus.

All combustion reactions (such as the burning of coal ... all involve very fast and extremely exothermic chemical reactions. The first 'reaction' that we tried for our hand warmer involved ...

A mysterious thick fog has swept across the US with multiple communities reporting a "burning chemical-like smell," akin to a similar event last year when 70 million people were engulfed in dense fog.