Aluminum is much more reactive than many metals the main ore of aluminum is called bauxite bauxite is purified to make aluminum oxide explain why it is not possible to extract aluminum metal from aluminum oxide using carbon

Use examples from the article to explain one positive and one negative effect that chemistry has had on society.

How do temperature and salinity affect deepwater currents? as temperatures and salinity levels of water increase, the water rises to the surface where it creates currents as it moves to colder regions. they create changes in wind direction, moving denser water in the same direction as the wind and causing the deepwater circulation patterns found in the ocean. they equalize the forces on undersea currents caused by the coriolis effect as they replace more dense water with less dense water. they create density differences that cause dense deepwater currents to flow toward the equator where they displace less dense, warmer water above them.

An unknown substance is a white solid at room temperature and has a melting point of 78 °c. which of the following substances is most likely to be the identity of the unknown sample?