Identifying Inorganic Compounds Using Qualitative And Chemical Tests

What is the appearance of reactant, Evidence of chemical reaction, and properties of a product?

Different reagents were used for the tests with the reagents reacting with the molecules in a specific way indicated by a change of color. Controls were provided to ensure integrity of the process. The results indicated the presence or absence of the organic molecules in the various substances provided. They proved that using these tests, one can accurately determine what organic molecules a substance contains. This will help in determining the composition of various substances within the cell or even outside the body and how they affect normal cell

The primary goal of this laboratory is to correctly identify an unknown substance. To achieve this task, one may use various tests that reveal both chemical and physical properties of a substance. By comparing the results of a known substance and the unknown substance, one may eliminate alternative possibilities and more accurately predict the undisclosed compound. Furthermore, by performing these tests, data can be collected and verified regarding chemical and physical properties of the unknown. Understanding the chemical properties of a known substance aids one’s understanding of the unknown based on comparative analysis of the results of the tests.

     Heavy metals, such as copper, lead, mercury, and selenium are another group of toxins that pollute the water as well as the rest of the environment. The source of many of these pollutants are industries, automobile exhaust, mines, and even natural soil.

A chemical reaction is when substances (reactants) change into other substances (products). The five general types of chemical reactions are synthesis (also known as direct combination), decomposition, single replacement (also known as single displacement), double replacement (also known as double displacement), and combustion. In this lab, the five general types of chemical reactions were conducted and observations were taken before, during, and after the reaction. Then the reactants and observations were used to determine the products to form a balanced chemical equation. The purpose of this lab was to learn and answer the question: How can observations be used to determine the identity of substances produced in a chemical reaction?

Often, toxic substances are being drained into the air, waterways, and undergrounds wells. According to the report by Environmental Protection Agency (EPA), over 60 million pounds of deadly chemicals are produced by industries in Florida. Notably, Florida’s water has been suffering mercury contamination until the state’s department of migration issues a circular regularly for regulations of eating freshwater fish in the region (Florida Fish and Wildlife Conservation Commission). In fact, such metals emanate from coal combustion’s emissions which run into water bodies. Not to mention, pesticides and herbicides utilized by government and homeowners pollute the environment (Florida Fish and Wildlife Conservation Commission). Indeed, all chemicals released into the atmosphere find themselves in rivers.

Determining the identity of unknown compounds in a given solution is an important skill to have. This can be done through a series of steps including extraction, purification, and spectroscopic methods.1

Included in the report are various organic and inorganic chemicals that may or may not be naturally occurring, amounts found, and where the chemicals are thought to be originating from. Like every city in the United States there is going to be elements and chemicals that are found that will scare some people. But the important thing to look at is the part per amount in the water. The water reports normally list every compound found in the water, as well as non-regulated compounds found. This is great because they do not discriminate on which compounds to list. After they receive the list, they then measure the amount usually parts million (ppm) or parts per billion (ppb). The Environmental Protection Agency has done extensive testing and found safe cutoff levels of these chemicals and in order for a city to produce drinking or potable water, they must adhere to these

Groundwater pollution is a major problem that is growing in all over the world. Of course the united states America also facing this problem. People of Mississippi State are worried about groundwater pollution due to the several human activities. Groundwater is a main source of their water supply. Disposal of solid waste in landfills is an economic option for many municipalities in developing countries where alternatives like incineration and composting are costly. However, groundwater pollution from the leachate generated within the landfill and migrating through the bottom liner material into the underlying groundwater aquifers remains a major public health concern I studied chemical parameters of groundwater in Alcorn State University as a part of my project.

By applying the general solubility rules listed below, the precipitate or lack of were then able to be analyzed to determine each substances identity after mixing on a spot plate. Given that specific compounds react differently when mixed with another substance, the precipitate, pH, and chemical equation of the reaction itself was utilized in determining the substance. Procedures such as the one conducted in this experiment are especially useful in determining which chemical is which, if it is unable to be deduced through pH, smell, or

I hypothesized that by observing the chemical and physical properties of an unknown substance whilst comparing them to data of known substances, we can identify the unknown substance. We were able to find the identity of all of the solids by comparing the results to the ‘Data About Solids’ chart. 10 b) I decided on the identity of the five solids by observing their physical and chemical properties, and comparing it to the data about the solids. I decided that sample A was baking soda, because of its reaction with acid.

All around the world, countries are fighting to keep their drinking water clean. Whether it’s streams, rivers, or lakes, countries have taken great measures to maintain high quality drinking water for both human consumption and animal consumption. Countries must first understand the sources of the polltion, then determine the best methods to eliminate the pollution. Clean drinking water is a valuable resource and a the key to human survival. Plants and animals also depend on water for their growth, so all water must be kept clean. The major contributors to water pollution can be classified in three categories, industrial, agricultural and municipal.

Toxic chemicals including heavy metals and radioactive wastes from different sources cause a serious pollution for underground water over the years. The main reason for underground water toxic chemical pollution is human activities such as chemical industries and mining. A given example for this case was

The purpose of this report is to propose a solution to the problem of reduced drinking water quality due to chemical pollution. Some bodies of water in the United States are becoming polluted from chemicals and restrictions are needed to protect drinking water quality.

In the hydrological cycle, less than 0.1% of the metals were actually dissolved in the water and more 99.9% were stored in sediments and soils (Karbassi et al., 2007 and Pradit et al., 2010). They discovered that their toxicity can bring into heavy metal pollution and it was one of the largest threats to their environment that affects directly on flora, fauna and health. They conclude in this research that various sources of heavy metals were some originates from anthropogenic activities like draining of sewage, dumping of