If a balloon is rubbed on your hair , it gains electrons and becomes negatively charged. When these charges come close to a stream of water , the stream of water bends .Use what you know about polar molecules to explain why the bending is occur. Hel

Between 2014 and 2016, more than 25,000 children in flint, michigan, drank water that was contaminated with lead from lead pipes. during this time, the city claimed the water was safe to drink. which of these actions could the city have taken to ensure that the drinking water was free from lead?

According to each substances heat of fusion, which of the items below requires more heat to be added per gram of substance to go from solid to liquid? silver sulfur water lead

Enzymes affect the reactions in living cells by changing the