Solubility

Trace Evidence
Trace Evidence
Trace Evidence Trace evidence is very important in forensic investigations. This category of evidence encompasses many diverse types of microscopic materials as well as some examples that are easily visible to the naked eye. The subject is broad and diverse because of the number of different types of evidence that are commonly encountered. Trace evidence can be thought of as evidence occuring in sizes so small that it can be transferred or exchanged between two surfaces without being noticed. V
During The 1920s, A Biologist Named Jean Piaget Proposed A Theory Of C
During The 1920s, A Biologist Named Jean Piaget Proposed A Theory Of C
During the 1920s, a biologist named Jean Piaget proposed a theory of cognitive development of children. He caused a new revolution in thinking about how thinking develops. In 1984, Piaget observed that children understand concepts and reason differently at different stages. Piaget stated children's cognitive strategies which are used to solve problems, reflect an interaction BETWEEN THE CHILD'S CURRENT DEVELOPMENTAL STAGE AND experience in the world. Research on cognitive development has provid
Connor Mason And Loc Sanders
Connor Mason And Loc Sanders
Connor Mason and Loc Sanders 3-16-99 1st I. Title ? Chapter 5 Lab Test II. Purpose ? To successfully separate the substances in the sludge and to identify their characteristic properties. III. Methods and Materials ? A. safety goggles, matches, alcohol burner/burner stand, test tubes w/ rubber stoppers, thermometer, pegboard, water, bucket, rubber band, calculator, sludge, rock salt, moth flakes, porcelain chips, sugar, salt, filter paper, funnel, test tube holder, paper towels, evaporating d
Albert Jung
Albert Jung
Albert Jung Abstract: This lab assignment is to observe certain substances and observe its physical and chemical changes in different environmental conditions. We first observed its physical properties, such as physical state and color and recorded it on paper. Then we did different types of experiments on some of the substances and observed the chemical changes. Some of the chemical changes where endothermic, exothermic, changes in color and changing of its physical state. We recorded the obse
Clean Air Act
Clean Air Act
Clean Air Act 1990, the federal Clean Air Act was passed to improve air quality in the United States. President Bush's proposed amendments to the Clean Air Act initially would have led to the introduction of alternative, non-petroleum fuels. The petroleum and oxygenate industries responded by offering a reformulated gasoline program as a substitute for most of the alternate fuel proposals. As a result, the amendments to the federal Clean Air Act adopted in 1990 required steps to achieve lower ve
Qualitative Analysis
Qualitative Analysis
Qualitative Analysis Qualitative Analysis Introduction: Qualitative analysis is used in the determination of the identity of a substance. It is different from quantitative analysis, which deals with the determination of the amount of a substance. In this experiment, qualitative analysis techniques are used to determine whether or not a sample contains a certain ion. When using this method, an unknown and a reactant are mixed. The result of the reaction leads to a conclusion about the presence or
Marijuana, Users, & What You Lose
Marijuana, Users, & What You Lose
Marijuana, Users, & What You Lose The topic of marijuana use is very broad and has an intricate effect on society as a whole, however, for the purpose of this paper; the literature review is based on facts covering a brief overview of the existence, use, and effect of marijuana. The history of the Cannabis plant and the outcomes associated with the use and abuse of marijuana is the major focus of this paper. What Is Marijuana? Marijuana is a drug obtained from dried and crumpled parts of the hem
Polychlorinated Biphenyls
Polychlorinated Biphenyls
Polychlorinated Biphenyls Polychlorinated biphenyls are a family of man-made chemicals that contain two hundred and nine individual compounds with varying toxicity. Many different combinations are possible. In chemical terminology, phenyl denotes a ring structure of six carbon atoms attached to something else; biphenyl results when two such rings are attached to each other. Polychlorinated biphenyl (PCB) is any molecule having multiple chlorine atoms attached to the carbon atoms of a biphen
Qualitative Analysis
Qualitative Analysis
Qualitative Analysis Qualitative analysis is used in the determination of the identity of a substance. It is different from quantitative analysis, which deals with the determination of the amount of a substance. In this experiment, qualitative analysis techniques are used to determine whether or not a sample contains a certain ion. When using this method, an unknown and a reactant are mixed. The result of the reaction leads to a conclusion about the presence or absence of certain ions in the un
Anesthetics
Anesthetics
Anesthetics Anesthesia is a partial or complete loss of sensation or feeling induced by the administration of various substances. For many decade, people have used one form of an anesthetic during surgical procedures. Some people also use some of these anesthetics as recreational drugs, e.g. laughing gas (a.k.a. Nitrous Oxide). The term anesthetic literally means without feeling. There are many different types of anesthesia, but they are usually put into three groups. These groups are gene- r
Qualitative Analysis
Qualitative Analysis
Qualitative Analysis Qualitative analysis is used in the determination of the identity of a substance. It is different from quantitative analysis, which deals with the determination of the amount of a substance. In this experiment, qualitative analysis techniques are used to determine whether or not a sample contains a certain ion. When using this method, an unknown and a reactant are mixed. The result of the reaction leads to a conclusion about the presence or absence of certain ions in the un
Introduction
Introduction
Introduction Air pollution is nothing new. Ever since the discovery of fire, less-than-desirable substances have been vented into the air. One of the first air-pollution regulations dates back to the fourteenth century, when King Edward I banned the burning of sea coal in lime kilns. U.S. air-pollution regulations have their roots in British Common Law. But regardless of those efforts, air pollution continues to be a serious local and world-wide problem. Pollution is the pressure within the air
Anesthetics
Anesthetics
Anesthetics Introduction Anesthetics are depressant drugs that cause a total or partial loss of the sense of pain. The effect an anesthetic has on the body depends on several factors. What type of anesthetic is used determines the effect along with the dosage and a person (or animals) body weight. The word anesthesia was first introduced by Oliver Wendell Holmes in 1846 about four weeks after the first demonstration of ether anesthesia at the Massachusetts General Hospital. Ether was the first
Organic Chemistry
Organic Chemistry
Organic Chemistry Organic compounds are covalently bonded compounds containing carbon, excluding carbonates and oxides. Carbon atoms are unique because of their ability to bond by catenation, which is forming long chains and rings from the covalent binding of an element to itself. Besides bonding with itself, carbon atoms are able to bind to elements with similar electronegativities. Organic compounds consist of carbon and these other elements. Hydrocarbons are the simplest organic compounds, co
Effects Of Marijuana
Effects Of Marijuana
Effects Of Marijuana Essay Question: Outline the use of marijuana and identify the acute and chronic harmful biological and psychological effects of marijuana on individuals. The use of marijuana is widespread by all classes, races, and cultures. Marijuana has been used for a multitude of purposes over thousands of years, and is still, today, is being used for many of the same purposes. (Hawks 1982) It is some of the possible outcomes of the usage of marijuana, and a brief history of marijuana t
Cell Permeability
Cell Permeability
Cell Permeability Cell membrane permeability refer to the crossing of the cell membrane by substances. Substances move into or out of the cell by crossing the cell membrane. Some substances cross the membrane very easily and the membrane is said to be very permeable to these substances; others move across with difficulty, while others are excluded completely. There are various process that a substance may used to cross the cell membrane, such as diffusion, facilitalated diffision, or a substance
Science Fair
Science Fair
Science Fair Science Fair Project 3/21/00 Science 21 Background Information I tried to figure out how does the Wellesley tap water compare to the water of the surrounding towns. Before I started my tests I guessed which town would have the best quality water without any initial data. I thought that Wellesley tap water would be the cleanest water in the area because Wellesley has the resources and the money to keep its water at a high quality. The objective of this project is to determine water
Pcbs
Pcbs
Pcbs PCBs: Polychlorinated Biphenyls Polychlorinated biphenyls are a family of man-made chemicals that contain two hundred and nine individual compounds with varying toxicity. Many different combinations are possible. In chemical terminology, ?phenyl? denotes a ring structure of six carbon atoms attached to something else; ?biphenyl? results when two such rings are attached to each other. Polychlorinated biphenyl (PCB) is any molecule having multiple chlorine atoms attached to the carbon atoms o
Multiple-Choice and Bimodal
Multiple-Choice and Bimodal
Multiple-Choice and Bimodal 1) The process of solute particles being surrounded by solvent particles is known as __________. A) salutation B) agglomeration C) solvation D) agglutination E) dehydration Answer: C 2) Pairs of liquids that will mix in all proportions are called __________ liquids. A) miscible B) unsaturated C) polar liquids D) saturated E) supersaturated Answer: A 3) The solubility of oxygen gas in water at 25 C and 1.0 atm pressure of oxygen is 0.041 g/L The solubility of oxygen