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Why Are Water Molecules Dissolved In Water

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In the first experiment (the solvent abilities of water), the samples of salt and sugar are all dissolved in water because of water’s special chemical structures. One water molecule consists of two oxygens bonded with one hydrogen atom by single covalent bonds. Oxygen is more electronegativity then hydrogen, therefore, it attracts the electrons from the covalent bonds stronger than hydrogen does; these are called polar covalent bonds. This create partially positive and partially negative regions of electrical charge in water molecules (oxygen region has negative charge while hydrogen region has positive charge), which give water a net dipole moment. This net dipole moment gives water the ability to attract to other water molecules and other …show more content…

For example: from the experiment, we observed and concluded that NaCl, or salt, can be dissolved in water. When NaCl molecules is placed in water, Na ions with positive charges and Cl ions with negative charges are separated from each other. Then, these positive and negative ions are attracted to the positive and negative regions in water molecules due to their opposite charges. Thus, Na and Cl ions are surrounded by many water molecules, creating a shield that distinct these dissolved ions from the crystal dissolving the salt. These things also happen when sugars dissolve in water. For example, sucrose, a type of sugar, completely dissolve in water. There are several oxygen and hydrogen bonds in this sugar molecule, which held this molecule with positive and negative charge polar bonds. When sucrose is placed in water, stronger polar bonds from water pull away and separate each of the sucrose molecules by separate the weaker attraction between the polar bonds in sugar molecules. From there, sucrose molecules bond with water molecules due to their opposite charges. Finally, sugar molecules will dissolve in …show more content…

The increase or decrease of acid or base in the environment could cost some serious damage to living organisms. For instance: human blood is made of acids and bases. It has the normal pH around 7.4. If there are some factors such as sickness or environmental factors that affect the normal blood pH, the body system in human body will be affected. This may lead to many serious damaging in human body, such as acidosis; a disease that occurs when there is an excessive amount of acid in one’s body. Carbon dioxide build up in human body and lower the pH of the blood. Without treatment, this can cause some serious health complications, shock and even death. On the contrast, alkalosis, another type of disease due to the change of pH in human blood, occurs when there are too much bases in the blood. Untreated, alkalosis can progress to paralysis, heart problems or kidneys failure. However, human is not the only organism that would be affected by pH; the bio system in the nature will also be influenced by the changes in pH. Acid rain damages trees and forests by taking their nutrients, causing infections and insects. It also lowers the pH levels in lakes and streams, which releases aluminum into the soil and destroys the whole aquatic. Therefore, it is important to maintain the pH level in the environment to protect the living of all organisms on

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Our hypothesis was partially correct, the property changing substances did have the weakest coherency with the lowest drop counts of 23(carbonated), and 14(soap), and pure water did have the strongest bond. What we also found was the the salt also dampened the liquid’s ability to hold onto a penny in large volumes, as all the different salts had a drop average of 24(28x2 & 16), five less than Tap water’s drop count (30). This led us to conclude that pure water has the strongest bond and that all foreign materials weaken the coherency of water. This evidence has led me to believe that similar substances are attracted and are more coherent towards themselves, in this case the water pieces get separated and generally less connected on a really small level due to the obstruction of foreign objects, this is why the different salts perform better than the huge air bubbles or the slippery properties of soap since the latter is more obstructive and the former dissolves with the water and blocks less. When studying a few other groups’ conclusions and data we did indeed find differences: some groups had differing data where a solution had better coherence than water itself which led to differing conclusions.

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A change in alkalinity results in a change in pH. Therefore, if the alkalinity is too high, the pH will be affected which will affect wildlife living in that area. In addition to that, if the alkalinity is too low, the quick change in pH will lead wildlife such as fish into a more vulnerable state (“pH and Alkalinity,” n.d.). Procedures: Our experiment consisted of various steps in order to determine the total alkalinity of the Catoctin Creek Watershed. The water we tested for our experiment was collected from the Appalachian Trail Rd. North of Roundhill.

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In other words, discuss how the strength of the bonds formed by water molecules, other molecules, and atoms produced your observations. Hydrogen bonds formed by water molecules are stronger than those of liquids such as ethanol because water has strong

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The negative charge on one molecule attracts the positive charge on a different molecule, and the positive charge on one molecule attracts the negative charge on a different molecule. This happens again and again until all the molecules are close together in one area. Oil, on the other hand, is non-polar. This means it has no charges, so the molecules do not get close together, and that is why oil is not dense. When oil and water are mixed, the denser water always goes to the bottom and the less dense oil always goes to the

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If the pH levels fall below 4.8 then then it becomes hostile to the aquatic life, at levels below 5pH Most fish eggs can not hatch, even lower pH levels will kill adult fish. (Conserve Energy Future)Acidification also reduces biodiversity since most aquatic life cannot survive in just low levels of pH(Conserve Energy Future), but the main problem for norway is their economy. Fish is not only their main source of food, but norway's main export as well.(Environmental Issues.) That is a major problem because if norway loses all of their fish there economy will free fall after losing its main export and top food source. The norwegian government is making huge strides to improve the Sulfur and nitrogen dioxide levels.

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and many more things. Diseases- Humans are also affected by water pollution. People can get very sick from drinking contaminated water, or eating seafood that has been poisoned by that water. Destruction of ecosystems- Many animals are losing habitats due to wildlife pollution, one of the biggest contributions to this is water pollution because of the dangerous chemicals and bacteria put into that water.

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the pH is the measurement of how much alkaline or acidic something is. it’s a scale that runs from 0 to 14, 7 is neutral. from below 7 downs is acidic and from higher then 7 upwards is alkaline. The soils rang from 3pH, high acidic, or 10pH, high alkaline. What does pH do?

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Whole body to keep the toxins in the body equally pH Acid base balance in the human body is essential for all living organisms. However, the perfect pH scale of the body is 7.365. The nearer body pH scale is to the perfect price, the higher you are feeling and also the easier it's to keep up long health. pH stands for potential hydrogen, and is

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Both biotic, and abiotic effects are put in this acidic cycle. First and foremost, studies show that dissolutions rates shown by planktonic organisms have increased. With organisms like plankton disassembling, is shows a biotic effect towards the ecosystem. Since Zooplankton

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Human created carbon that is absorbed into the ocean has made a 30% increase in ocean acidity. (1) Organisms like oysters, clams, scallops, etc. are being negatively affected by the acidity. Animals like salmon and crabs are also thought to be affected negatively by the carbon Dioxide in the ocean. Plants as well as animals are being affected by the acidity in the ocean. They are affected

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Ocean water does not kill someone because it has a different pH, or that there are different microbes in the ocean than pond water, it is because of an abundant mineral that one’s body uses quite regularly: Salt. Human beings cannot drink salt water because the change in salt concentration in the blood stream will damage the cells and eventually lead to death. Cells in the body maintain constant equilibriums with the surrounding matrix. Changes in these equilibriums happen constantly, and the body is almost always adept at compensating for these shifts. For example: when there is an influx in pH of the blood stream, the body has a natural

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Alkalosis & Acidosis Shalita Johnson SC131 Respiratory Acidosis: This is a condition that occurs when the lungs cannot remove enough carbon dioxide that is produce by the body. When the body have excess carbon dioxide (CO2) this causes the pH of the blood and other body fluids to decrease, this make them acidic. This can be known as ventilatory and respiratory failure. Normal range: PaCO2 35-45 mmHg. pH levels are 7.35 to 7.45.

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Strong acids and strong bases are strong electrolytes and are assumed to ionize completely in the presence of water. Weak acids however, only ionize to a limited extend in water. Any weak or strong acids when in contact with any weak or strong alkali will start to undergo neutralization regardless of their volume. When an indicator which is present in the acid-base mixture and have experienced colour change, it indicates that the mixture is in right proportions to neutralize each other and is also known as the equivalence point.

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There is an article the writer says that ''acid rains can change the composition of the rivers and the sea, making them toxic for fishes, because the quality of ozone in the thower plants of the atmosphere can causes lung to all animals". that’s shows that what people do it comes back to them in bad effects that they may kill all the animals that they need them for therapy and they may cause a diseases that ends human life . Also as we know that also the plants damaged from the pollution that they may be extinct and people cannot have a good healthy and fresh air that they maybe be sick from it and also the soil will be not good to plant in it and

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Acid precipitation can also adversely affects trees. There is speculation that sulfate and nitrate deposition affects the ability of trees to tolerate cold temperatures, and weakened trees are killed by cold conditions or become susceptible to diseases. Acid rain also affects a lake ecosystem by dissolving chemical elements necessary for life and keeping them in solution so they leave the lake with water outflow. It is also known that acid rain leaches metals, such as aluminum, lead, mercury, and calcium, from soils and rocks in a drainage basin and discharged them into rivers and lakes.

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