Sarah Aguilera June 30‚ 2013 Lab # 4 Properties of Gases Purpose The purpose of this lab was to investigate and discover the physical and chemical properties of some gases. Throughout this lab the ability to identify if and when gasses were present was enhanced. Data Observations During the first step of this lab‚ when obtaining the hydrogen from the mossy zinc and the hydrochloric acid‚ it took a lot longer than I thought it would for the water in the pipet to be displaced. I was tempted
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was one of the hottest summers worldwide on record or why some recent winters have been among the warmest ever recorded? Do you also wonder why disastrous weather events like super-storm Sandy continue to increase in their frequency and severity? Many modern scientists attribute these dangerous environmental trends of global warming to the ‘greenhouse effect’. The ‘greenhouse effect’ results from greenhouse gases such as carbon dioxide rising into the atmosphere‚ trapping infrared radiation
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WHAT IS METAL? A metal is a chemical element that is a good conductor of both electricity and heat. Metals are malleable and ductile and have lustrous appearance. They have moderate to high physical constants and high tensile strength. Metals are further divided into two main groups - ferrous and non ferrous metals. TYPES OF METAL • FERROUS METAL These are metals which contain iron. They may have small amounts of other metals or other elements added‚ to give the required properties
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A metal is defined as an opaque shiny element which possesses properties such as malleability and ductility. Malleable meaning that they can be hammered into shapes and ductile meaning they can be drawn into wires. They are also very strong and posses high tensile strength and are good conductors of heat and electricity. Metals are shiny‚ and also have high densities. Metals are a very important and significant part of chemistry. However‚ their importance is not just limited to chemistry; they are
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Explain how you would perform the role of Haemon during his interaction with Creon‚ in order to reveal his changing attitude(s) towards his father. The character Haemon appears on stage just as his Creon has deemed Antigone to her death as a punishment for a crime of family loyalty. In performing the role of Haemon‚ I would come onto centre stage in a costume of traditional Greek military attire adorned with royal crest of arms to portray his princely supremacy as a Theban prince. Creon’s costume
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Identify and explain how you would prepare for a health inspection. You may use some concepts learned from HACCP as an example. Personally‚ I would make sure that my restaurant or food service venue I was running is operating above expectations. First off‚ I would start with the overall appearance of the establishment. If a health Inspector was coming to review a fine dining establishment then it would throw off a lot of red flags if it didn’t look like a fine dining experience. I would have my employees
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mixtures of various minerals. Most minerals are lattice structures‚ both ionic and covalent. Economic minerals have been divided into two main categories: Metalliferous minerals- mined to extract a metal Industrial mineral- either has some direct practical use‚ or take part in some industrial process Gems and precious stones are an exception to industrial metals as they do have a direct ‘practical’ application but are dealt with separately. Some common minerals include: * * Silica-
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EXPERIMENT 13： Extraction: Extraction with acid and alkali Objective 1. To recover the benzoic acid and p-dichlorobenzene from its mixture from its mixture by using acid-alkali extraction. 2. To determine the percentage recovery and melting point of the recovered benzoic acid and p-dichlorobenzene. Introduction Acid-base extraction is a process which purifying the acids and bases from mixtures based on their chemical properties. Acid-base extraction is performed to isolate the compounds and natural
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Experiment #1 Date: September 13‚ 2011 Title: Diffusion in Gases I Aim: To observe the diffusion of bromine Apparatus and Materials: Glass tube‚ bromine‚ fume chamber Diagram: Procedure: -Liquid bromine was placed in a jar and covered Observations: When first placed in the jar the original color of bromine was red-brown. As it began to diffuse its color changed from dark brown to a lighter brown until it becomes a yellow-like orange color. As it was diffusing liquid bromine changes its state
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Explain in details of how would you develop strategies to ensure team members have input into planning‚ decision making and operational aspects of work team. In order to increase the participation of their team members‚ managers need to focus on developing new strategies of working with people. They need to create structural flexibility which will enable employees to be more productive and participate within the team. In order to solve problems‚ to respond effectively to change‚ and‚ more
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