Essays Tagged: "acidity"

Aspirin

rom sodium salicylate, the standard anti-arthritis treatment of the time. Hoffmann figured that the acidity of the salicylate made it hard on the stomach's lining. He began looking for a less acidic f ...

(3 pages) 90 1 4.3 Dec/1996

Subjects: Humanities Essays > Health & Medicine

Acid Rain Essay

real good and professional Outstandig, alot of time must have been spentWithin this past century, acidity of the air and acid rain have become recognized as one of the leading threats to our planet' ...

(4 pages) 70 0 3.0 Jan/1999

Subjects: Science Essays > Environmental Science

Should We Fix Acid Rain? What is acid rain and its causes? Should we fix it? By who and how should it be fixed?

d rain or acid precipitation is the rain, snow, fog hail which has pH levels below 5.6, the average acidity of rain. The pH scale is used to measure the level of acidity by measuring the hydrogen ion ... ur (SO2) and nitrogen (NOx) which when combined with the moisture in the air, may fall as rain with acidity of sulphuric or nitric acids. In Europe, the main cause of the acid rain is caused by the re ...

(4 pages) 130 3 4.1 Dec/2002

Subjects: Science Essays > Earth Sciences

The Effect of Acid Rain on Seed Germination w/ headings and sub-headings

part.ACIDSIn order to understand acid rain, pH must first be understood. pH determines a substance'sacidity. A pH scale goes from 0 to 14. The lower the pH, the higher the acidity. Acids also haveothe ... and are responsible forthe seed's growth. If they do not divide, eventually the seed will die. The acidity negatively affectsthe meristem cells and acts as interference, causing them to work over tim ...

(6 pages) 127 1 4.3 Jan/2003

Subjects: Science Essays > Environmental Science

Acid Rain - Causes and effects.

d precipitation, is the rain, snow, fog, hail, mist etc. that has a pH level below 5.6, the average acidity of rain. There are many factors which contribute to the acidity, some occurring naturally an ... c plants and animals to live. It is also responsible for damage to statues and buildings.The normal acidity of unpolluted rainwater is caused by the natural presence of carbon dioxide (CO2), found in ...

(8 pages) 169 0 3.7 Sep/2003

Subjects: Science Essays > Environmental Science

Acid Rain.

acidic nature of normal rain, and thus it poses no environmental problems. It is an increase in the acidity of rain, caused by human activities such as the combustion of fossil fuels, that has turned ... Angus Smith. At that time, he realized that smoke and fumes from human activities could change the acidity of precipitation. Unfortunately his awareness was not considered an environmental concern un ...

(8 pages) 76 1 4.3 Dec/2003

Subjects: Science Essays

Acid Rain

It's Bringing Down Our Ecosystems "Acid rain is a term used to describe the acidity of wet and dry deposition" (Middleton 50). Deposition is just the process of depositing. Acc ... numbers due to acidification. Scientists first thought that the decline in fish was due to the high acidity of the water. Something is acidic if the pH level is 6 or below. In the 1970's scientists fo ...

(6 pages) 62 1 4.0 Dec/2003

Subjects: Science Essays > Earth Sciences

PH and Health Problems

e acid has a very low pH level than the heartburn can become much more severe.2. PH is a measure of acidity or alkalinity. PH tests can be done on soil or swimming pools. An esophageal pH test measure ... esophageal pH test measures how often stomach acid flows into the lower esophagus and the degree of acidity during a 12-24 hour period. PH tests are important because they can evaluate whether you are ...

(2 pages) 37 0 4.0 May/2004

Subjects: Science Essays

You are required to write up a report to present and evaluate the data collected on the excursion to long reef rock platform

are subject to great physical and chemical variations such as, salt concentration, temperature, and acidity. Different areas of the tidal rock shelf experience different physical and chemical conditio ...

(3 pages) 49 1 3.0 Aug/2004

Subjects: Science Essays > Biology

Acid Rain

nd normally in the earth's atmosphere, reacts with water to form carbonic acid. While "pure" rain's acidity is pH 5.6-5.7, actual pH readings vary from place to place depending upon the type and amoun ...

(3 pages) 95 2 5.0 Aug/2004

Subjects: Science Essays

Acid Rain - Impact and Cause

trogen compounds believed to be 40 to 60 percent of the total. The contribution of lightning to the acidity of rain is significant. Two strokes of lightning over one square kilometre produce enough ni ...

(3 pages) 39 0 4.0 Sep/2004

Subjects: Science Essays > Chemistry

Biology HSC Notes - Maintaining a Balance

ape of the substrate (compound). The active site is where the enzyme catalyses the reaction.Diagram:Acidity of a substancePH levels describe the acidity of a substance. pH ranges from 1-14, where lowe ...

(16 pages) 128 1 3.3 Aug/2005

Subjects: Science Essays > Biology

Chemistry Project: Acids and Bases & the pH Scale

turn litmus red whilebases taste bitter and turn litmus blue. The term pH relates to measuring the acidity oralkalinity of a solution, such as vinegar, or even a damp substance like soul.The neutral ... substance like soul.The neutral pH is 7, which is essentially water, with lower numbers indicating acidity andhigher numbers indicating alkalinity. Hydronium ions (H3O+) are formed when watermolecule ...

(6 pages) 67 1 2.3 Mar/2006

Subjects: Science Essays > Chemistry

Ph Balance in shampoo

d out well.Ph is a measure of the activity of hydrogen ions in a solution. Ph testing tells you the acidity or alkalinity of a solution i.e. Shampoo. The hydrogen ion activity is dictated by the disso ... as the same as the cheaper shampoos. Which means it's not the price that depends on the Ph, but the acidity of the ingredients. The natural shampoos had a lower Ph, going as low as 2.5.Bibliography:ht ...

(3 pages) 24 0 0.0 Apr/2006

Subjects: Science Essays > Chemistry

Making A Pizza: Chemistry Wise

urdle the milk, the lactic bacteria converts lactose into lactic acid and this lowers the degree of acidity (pH) of the milk. To make the milk curdle, use is made of an extract from the stomachs of ca ...

(1 pages) 16 0 3.0 Oct/2001

Subjects: Science Essays > Chemistry

Iloveindia

lize a glass of cola, it takes 32 glasses of high pH alkaline water. pH is the scale to measure the acidity of the solution. The pH of water is around 7, indicating that it is neutral; anything, which ... g, which falls below 7, is acidic. If the factor of pH is decreased by 1 unit, from 7pH to 6pH, the acidity of the solution actually increases by 100 times. From this one can imagine how high the pH v ...

(3 pages) 923 0 0.0 Oct/2001

Subjects: Humanities Essays > Health & Medicine

Biology HSC Syllabus - Maintaining A Balance (All Dot Points Answered)

s the shape of the substrate and a reaction occurs.•Identify the pH as a way of describing the acidity of a substance:-The substance that makes a solution acidic is hydrogen ions-pH is a measure ... e optimumpH:Enzymes work best at an optimum pHThis is usually within a very narrow rangeExtremes of acidity or alkalinity can affect the bonds holding the 3D globular shape of the enzyme, denaturing t ...

(25 pages) 85 0 4.7 Jun/2007

Subjects: Science Essays > Biology

Maintaining a Balance

ether, the enzyme will return to its original shape.1.2. identify the pH as a way of describing the acidity of a substanceIf you are given the pH of a substance, this indicates whether it is acidic, b ...

(15 pages) 50 0 0.0 Jan/2008

Subjects: Science Essays > Biology > Plant Biology

Acid Rain When coal, gasoline, and fuel oils are burned,

recipitation is just as damaging to the environment as the liquid form.During the 20th century, the acidity of the air and acid rain have become a leading threat to the stability and quality of the Ea ... have become a leading threat to the stability and quality of the Earth's environment. Most of this acidity is produced in the industrialized nations of the Northern Hemisphere the United States, Cana ...

(2 pages) 355 0 0.0 Feb/2008

Subjects: Science Essays > Environmental Science

Acid Rain When coal, gasoline, and fuel oils are burned,

recipitation is just as damaging to the environment as the liquid form.During the 20th century, the acidity of the air and acid rain have become a leading threat to the stability and quality of the Ea ... have become a leading threat to the stability and quality of the Earth's environment. Most of this acidity is produced in the industrialized nations of the Northern Hemisphere the United States, Cana ...

(2 pages) 431 0 0.0 Feb/2008

Subjects: Science Essays > Environmental Science