Water Contamination Lab Report

This week we went to the Conodoguinet Creek. While we were at the creek we did many different things. One of the experiments we did was the Critter Count which was my favorite. Another experiment we did was the Eutrophication Tests. The last Experiment we did was the bobber test.

In this lab we were trying to figure out if Salt Creek and Barker Lake had the correct chemical balances to sustain catfish for the years coming. In order to find this out, we tested the water using a Hach Water Testing Kit. Inside were dissolved oxygen reagent powder pillows 1, 2 and 3 which we added and mixed into our sample water to prepare it for testing. Then we added droplets of Sodium Thiosulphate Solution into the prepared water too see how much dissolved oxygen parts per million were in the water. Our independent variable in this experiment was the 5 different testing sites that we went to for water samples.

After 5 days the plates were removed from the cold room and the gram-negative test for Colony A on the EMB agar showed pink fisheye colonies which lead to the conclusion that the gram-negative organism within Unknown #21 was Enterobacter aerogenes. Had the pigmentation been metallic green, the organism would have been identified as Escherichia coli, and had there been no pigmentation at all a Triple Sugar Iron agar (TSI) test among other tests would have been

According to the article “How Tap Water Became Toxic in Flint, Michigan,” written by Sara Ganim and Linh Tran, the residents of Flint, Michigan highly disapproved of the new water source. Around 2 years ago, the city of Flint was forced to switch their water supply from Lake Huron to a more local source, Flint River. Before, this was not a big problem to the residents of Flint because they were told that the water they were drinking was harmless. However, people began to doubt that the water they were drinking was safe because it looked like sewage. Over time, new evidence began to arise claiming that the water contained massive amounts of lead and iron.

The tap water started smelling like sulfur and chlorine, and came in different color like urine and rust. This created many health concerns within the community, where

The city of Flint, Michigan and its residents have been suffering from their own tap water for months. When a resident turns on a water faucet in their home, the water emits a strange smell and the color comes out brown. It turns out that water contains a high amount of iron and lead. What made the tap water contaminated? Why is the city unable to obtain clean tap water despite being under one hundred miles away from the Great Lakes?

Drinking contaminated water can cause different types of cancers and also infertility and birth defects due to of the presence hazardous chemicals. Impoundments that have not been built or properly closed off have led to the death of many animals and also health issues in

Science 1. Free ears in dogs are controlled by dominant allele (F), and attached ears are controlled by the recessive allele (f). In addition, Short dogs is due to a dominant allele(S), and long hair is due to a recessive allele (s). Which of the following is the genotype of the dogs with free ears and short hair? a. ffss b. FfSs c. ffSs d. Ffss 2.

While, the water is contaminated humans, animals, and plants would be ill. If they drink that contaminated water for awhile they could end up

This experiment demonstrated water density because the cold water moved beneath the hot water, because it is denser. 5. Was your hypothesis supported or refuted? Explain.

These facts introduce and support the message that Standage is delivering. Standage continues with many statistics: “Admittedly, both kinds of water suffer from occasional contamination problems but tap water is more stringently monitored and tightly regulated than bottled water. New york city tap water, for example, was tested 430,600 times during 2004 alone.” He stated. Even though he admits that both of each kind contains chemicals-which at the same time Standage claims that the tap water is more sanitized-but also he points out that it is not the taste that differs between the two

Abstract: The purpose of this experiment was to identify given Unknown White Compound by conducting various test and learning how to use lab techniques. Tests that are used during this experiment were a flame test, ion test, pH test, and conductivity test. The results drawn from these tests confirmed the identity of the Unknown White Compound to be sodium acetate (NaC2H3O2) because there were no presence of ions and sodium has a strong persistent orange color. The compound then will be synthesized with the compounds Na2CO3 and HC2H3O2 to find percent yield.

Drinking water sources have been contaminated with explosive methane, as well as other dangerous substances, such as benzene and arsenic, that can cause cancer and other serious illnesses. Toxic chemicals, as well as erosion and runoff from drilling operations, have fouled

Although the packaging itself is bad enough for the bottled, (Ferrier 2001) notes that the chemical composition of the water itself can be more deadly due to limited regulation. The tap water is under keen regulation by the municipality. Besides, (Ferrier 2001) goes ahead to indicate that quality of water coming from the taps is checked routinely for any suspicious particles and chemicals. This is not the case for bottled water. First, as Doria (2010) notes, twenty to twenty-five percent of the bottled water comes directly from tap water without any form of purification through distillation of any other treatment.

Introduction: In this lab, of water in a hydrate, or a substance whose crystalline structure is bound to water molecules by weak bonds, is determined by heating up a small sample of it. By heating, the water of hydration, or bound water, is removed, leaving only what is called an anhydrous compound. Based on the percent water in the hydrate, it can be classified as one of three types: BaCl2O ⋅ 2H20, with a percent water of about 14.57%, CuSO4