Acid rain is measured using a scale called "pH." The lower a substance's pH, the more acidic it is. Pure water has a pH of 7.0. Normal rain is slightly acidic because carbon dioxide dissolves into it, so it has a pH of about 5.5. As of the year 2000, the most acidic rain fall...
If the current water's direction or speed increases, the particulate substance from the bottom sediments may be suspended. Soil Erosion Soil erosion is due to the troubles on the surface of the land. Illegal logging, forest fires, mining, and construction can cause it. The particle...
Explain the rain shadow effect What are the consequences of gully erosion? What is the effect of coral reefs on humanity? What are the properties that influence the acidity of a substance? Does acid rain affect the ozone layer? What are the effects of soil pollution in urban areas? How doe...
Why is phenol called carbolic acid? What causes color change in chemical reactions? What determines whether a substance will dissolve? What determines the hardness of water? What happens when you mix soda and baking soda? What effect does acid rain have on trees and soil?
What substance is more necessary to our existence than any other? Water. At its most basic, water is a molecule with one oxygen atom and two hydrogen atoms, bonded together by shared electrons. It is a V-shaped polar molecule, which means that it's charged positively near the hydrogen ...
Acid rain is measured using a scale called "pH". The lower a substance's pH, the more acidic it is. Pure water has a pH of 7.0. Normal rain is slightly acidic because carbon dioxide dissolves into it, so it has a pH of about 5.5. As of the year 2000, the most acidic rain fall...
During the Devonian period, plants successfully acquired a number of adaptations, including a fully formed vascular system and the substance lignin, which strengthens stems. These features made it possible for plants to grow bigger and develop deeper roots than ever before, which sped up the weather...
In some regions, like Turkey (above), water is becoming scarce. Other regions have ample, but unsanitary, supply. See more pictures of natural disasters. Courtesy Sezayi Erken/AFP/Getty Images Key Takeaways Freshwater makes up only 3 percent of Earth's water supply, with less than 1 ...
Wedging occurs when a substance finds its way into cracks or holes in rock and expands outward. This widens these cracks and holes, and can cause rock to split apart; this may also occur to exposed brick. Freezing water, crystalizing salt, and growing plant roots are common causes of ...
In the reaction HCl + H2O arrow H3O+ + Cl-, which substance causes the litmus to turn red? ||Indicator||Color of acid form||Color of base form||Ka value |'A'|red|yellow|1.0 x 10 3; |'B'|yellow|blue|1.0 x 10 What are the predominant colors of each indicator at...