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 Water Cycles The sun beams at the clouds and the water collects within them. Now its rains and it goes in the sea. Now it does the same thing all over again. This cycle is made up of a few main parts: evaporation (and transpiration) condensation precipitation collection
Article posted November 6, 2011 at 08:13 PM • comment • Reads 1767 • Return to Blog List Add a CommentPosted Comments |
 About the Blogger Acidic and basic are two extremes thatdescribe chemicals, just like hot and cold are two extremes that describe temperature. Mixing acids and bases can cancel out their extreme effects; much like mixing hot and cold water can even out the water temperature. A substance that is neither acidic nor basic is neutral. The pH scale measures how acidic or basic a substance is. It ranges from 0 to 14. A pH of 7 is neutral. A pH less than 7 is acidic, and a pH greater than 7 is basic. Each whole pH value below 7 is ten times more acidic than the next higher value. For example, a pH of 4 is ten times more acidic than a pH of 5 and 100 times (10 times 10) more acidic than a pH of 6. The same holds true for pH values above 7, each of which is ten times more alkaline—another way to say basic—than the next lower whole value. For example, a pH of 10 is ten times more alkaline than a pH of 9. |
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