...Pre-lab discussions The arrangement of the periodic table is according to the periodic law. The periodic law states that arrangements of the elements are in order of increasing atomic number with both their chemical and physical properties showing a periodic pattern. Students through carrying of laboratory experiments discover these properties of elements in the periodic table. Major properties to be examined are first ionization energy, atomic radius, physical and chemical properties. Purpose To understand periodic trends as it relates to atomic radius, first ionization energy, physical and chemical properties of elements. Equipments and Materials 8 test-tubes Aluminum (Al) Magnesium (Mg) Silicon (Si) Bunsen burner...
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...Atomic Theory (see page 89) | Topic in Class | Structure of the Atom | Lab | Very Small Particles, Part I (pp. 108-109) | Thursday, Sept. 24 & Friday, Sept. 25 | HW Due | Ch. 4b Hw 1. Problems 59-69, p. 113. | Tests/Quizzes | None | Topic in Class | Radioactive Decay, Light Particles and Waves | Lab | Very Small Particles, Part II (pp. 108-109) | Tuesday, Sept. 29 & Wednesday, Sept. 30 | HW Due | Ch. 5a Hw 1. Chapter 5 Notes. 2. Practice Problems: 1-6, pp. 121-124; 18-23, pp. 139-141. | Tests/Quizzes | Quiz: Atomic Structure | Topic in Class | The Bohr Model, Electron Configuration | Lab | None | Thursday, Oct. 1 & Friday, Oct. 2 | HW Due | Ch. 5b Hw 1. Problems 65-82, p. 147. | Tests/Quizzes | None | Topic in Class | Test Review | Lab | TBA | Tuesday, Oct. 6 & Wednesday, Oct. 7 | HW Due | Test Review 1. Complete Study Guide. | Tests/Quizzes | Test One | Topic in Class | None | Lab | None | Thursday, Oct. 8 & Friday, Oct. 9 | HW Due | Ch. 6a Hw 1. Chapter Six Notes. 2. Practice Problems: 6-9, p. 162; 16-18, p. 165. | Tests/Quizzes | None | Topic in Class | Periodic Table | Lab | TBA | Tuesday, Oct. 13 & Wednesday, Oct. 14 | HW Due | Ch. 7a Hw 1. Chapter Seven Notes. 2. Periodic Table Handout. | Tests/Quizzes | Periodic Table Quiz | Topic in Class | The Elements, Part 1 | Lab |...
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...In this lab, we explored some of the ideas that allowed Dmitri Mendeleev to publish his periodic table in 1869 including the findings of Johnann Dobereiner, John Newland and Lothar Meyer. This lab was completed utilizing element cards that displayed the name, atomic number, atomic mass and chemical formulas of the 64 elements that were known in the nineteenth century. We began by examining Dobereiner’s Triads by arranging the triads in order of atomic mass then calculated the average of the first and third element and compared it to the middle element. In the case of chlorine (35.5amu), bromine (80amu) and iodine (127amu), the average of chlorine and iodine is 81.3amu, which is very close to the atomic mass of bromine. We discovered this is...
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...The objectives of “Lab 8: Lemon Car Competition” were to use redox reactions to store energy in capacitors, to learn about battery cells and construct a lemon citrus cell to power devices, and to build a vehicle powered by either a lemon battery or a capacitor to be entered in a competition. The competition objective was to win the competition. The winner was the vehicle with the highest competition ratio, which was calculated using Equation 1 below. To have the highest competition ratio, the cost and time traveled were minimized and the distance traveled was maximized. The designed vehicle came in last place along with three other vehicles because it did not travel. The car costed $3.50 and traveled 0 foot, so the competition ratio was zero....
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...Physical properties of Elements & chemical properties of Elements Purpose- The purpose of this lab is to look closely at properties that differentiate metals from nonmetals, and then to see how the reactivity of metals differ within a group and within a period Procedure- (Part 1). First you must put on googles because we are working with chemicals that could damage your eye sight if got in eye. Then you obtain a spot plate and obtain 1 sample of each element and be sure not to use your fingers while doing this. Next you get a conductivity tester, then observe elements and record color, whether the element is malleable or brittle, and if it conducts electricity. After that you identify if the sample is a metal, nonmetal, or metalloid. Lastly you clean up your area and return the nonmetals and the conductivity tester. (Part 2). The first step is you must have googles on. You then return all the nonmetals, and get one more sample of each metal, but do NOT use your fingers. Then record your observations about each metal in data table 2. After that clean out your spot plate then place spot place over a blank piece of paper, next locate three wells that are not adjacent to each other and label them as magnesium, aluminum, and calcium. Your next step is to add 10 drops of distilled water to the three well and then add 1 drop of litmus to each well too then record the color of the liquids in the data table. Also add 1 piece of the appropriate metal to the wells and record...
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...We recently did two labs where we were given the task of observing single-replacement and double-replacement reactions. This paper has background information on the different types of chemical reactions, as well as the chemistry behind the two reactions we observed in lab. A chemical reaction is a process that is characterized by a chemical change in which the reactants (starting products) are different from the products. Chemical reactions involve the breaking of old bonds and the formation of new bonds. They can result in the formation of precipitates, changes in color, production or absorption of heat, or formation of gas bubbles. Chemical reactions can be placed in the following five categories: (i) synthesis (ii) decomposition...
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...is “Ds”, chemical element with atomic number 110. It is produced artificially by nuclear fusion. Each Darmstadtium atom has a very large nucleus, or central mass, containing positively charged particles called protons and neutral particles called neutrons. Dirk Coster He is known as the co-discoverer of Hafnium (Hf) (element 72) in 1923, along with George Charles von Hevesy, by means of X-ray spectroscopic analysis of zirconium ore. The discovery took place in Copenhagen, Denmark. Dmitri Mendeleev He is credited as being the creator of the first version of the periodic table of elements. Using the table, he predicted the properties of elements yet to be discovered. DUBNIUM (Db) It is a chemical element with the symbol Db and atomic number 105, named after the town of Dubna in Russia, where it was first produced. DYSPROSIUM (Dy) Its chemical symbol is “Dy”, metallic element with an atomic number of 66. Dysprosium is one of the rare earth elements in the lanthanide series of the periodic table. Döbereiner, Johann Wolfgang He was a German chemist who is best known for work that foreshadowed the periodic law for the chemical elements. Edwin M. McMillan He was an American physicist and Nobel laureate credited with being the first ever to produce a transuranium element. He shared the Nobel...
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...Manufacturing Constraints Aesthetic Development Optimising Performance Final Concept Design Characterisations Generator Characterisation Lab Report Design Implications Gearing Ratios Jet Lab Lab Report Design Implications Nozzle Diameter Manufacturing Buying Materials Nozzle Manufacture Pelton Wheel Manufacture Circuitry Manufacture Frame Manufacture Final Assembly Testing Testing Report Testing Implications Manufacturing Fine Tuning Competition Competition Report Comparison to Other Groups Conclusion PArt 2: Language and illustrations Generator Characterisation Aims It is important to find the operating point of the generator so that it functions as efficiently as possible when connected to the Pelton Wheel. The purpose of the generator lab was to find the Armature resistance, EMF constant, Torque Constant and Resistive Torque due to friction; each of which help to determine this. Lab Report The EMF constant of the generator can be calculated by measuring the output terminal voltage from the generator for different input shaft speeds. This is achieved by connecting a motor of known specifications...
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...04.03 Periodic Table - Lab Report Please complete the following lab report for assignment 04.03 Introduction to the Periodic Table. Take notes on the properties of the three types of elements. Metals|Good conductors of heat and electricity. Metal are ductile, and malleable. Not only have that metals also had a distinct shiny look which is called metallic luster.| Nonmetals|Poor in conducting heat and electricity generally as insulators, only at room temperature. Non-metals can be either solids or gases; they are neither ductile nor malleable. They are mainly either opaque or transparent.| Metalloids|Moderate at conducting heat and electricity, only solid at room temperature, can be ductile and malleable only to varying degrees. How at metallic luster in varying degrees.| Fill in the following data table as you complete the activity. Material|Conductivity(strong, moderate, none)|Ductility(ductile or not ductile)|Appearance(bright shine, moderate shine, or no shine)| 1|The light is bright.|Can be drawn into wire.|Shines brightly.| 2|The light is dim.|Can be drawn into wire|Shines moderately.| 3|There is no light.|Cannot be drawn into wire|Does not shine.| 4|The light is bright.|Can be drawn into wire.|Shines brightly.| Identify each of the following as a metal, nonmetal, or metalloid. Please use complete sentences to describe the observations that led you to identify each. Material 1: Metal- Because it can be drawn into wire, shines brightly, and the light...
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...Stoichiometry ________________________________________ Stoichiometry is simply the math behind chemistry. Given enough information, one can use stoichiometry to calculate masses, moles, and percents within a chemical equation. ________________________________________ ________________________________________ What is a Chemical Equation? In chemistry, we use symbols to represent the various chemicals. Success in chemistry depends upon developing a strong familiarity with these basic symbols. For example, the symbol "C"represents an atom of carbon, and "H" represents an atom of hydrogen. To represent a molecule of table salt, sodium chloride, we would use the notation "NaCl", where "Na" represents sodium and "Cl" represents chlorine. We call chlorine "chloride" in this case because of its connection to sodium. You should have reviewed naming schemes, or nomenclature, in earlier readings. A chemical equation is an expression of a chemical process. For example: AgNO3(aq) + NaCl(aq) ---> AgCl(s) + NaNO3(aq) In this equation, AgNO3 is mixed with NaCl. The equation shows that the reactants (AgNO3 and NaCl) react through some process (--->) to form the products (AgCl and NaNO3). Since they undergo a chemical process, they are changed fundamentally. Often chemical equations are written showing the state that each substance is in. The (s) sign means that the compound is a solid. The (l) sign means the substance is a liquid. The (aq) sign stands for aqueous in water and means...
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...NETW-420-62199 Enterprise Network Mgmt w/Lab Network management is the top-level administration and maintenance of large networks, often in areas such as computers or telecommunications, but not including user terminal equipment. It often involves functions such as security, monitoring, control, allocation, deployment, coordination, and planning. A large number of protocols, including SNMP, CMIP, common information model and Java Management Extensions, govern this field and exist for its support. Remote Monitoring (RMON) is a standard monitoring specification that enables various network monitors and console systems to exchange network-monitoring data. RMON provides network administrators with more freedom in selecting network-monitoring probes and consoles with features that meet their particular networking needs. Remote Monitoring has been helpful bringing company closer and closer all over the world, this standard is just not for a LAN network. Many company have their employees work from home and can monitor their system from any location that have a Wi-Fi service. RMON has the capabilities to delegate management functionality, by using SNMP. There are several entities that make up a network management system: managers, agents, MIBs, RMON, probes, MOs, and real devices. An RMON probe can sometimes be management appliance software or could be in the device that is managed. They can also reside near monitored network elements. The probe analyzes RMON information such...
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...changes and modify its practice and align its goals in order to better serve the community at large. In short, it means the hospital needs to maintain compliance with the Joint Commission standards and provide consistent and quality care to its recipients. Compliance is a difficult task to achieve. It requires great effort on the part on the administrators and work force and requires the collaboration of interdisciplinary teams to bring about the desired effect. In order to monitor compliance, the hospital utilizes a periodic performance review (PPR) tool to assess its performance by continuous monitoring and performance improvement activities. The PPR provides the chassis for continuous standards compliance and focuses on the essential systems and practices that affect patient care and safety. The hospital self-evaluates its adherence with all Joint Commission Accreditation Participation Requirements, National Patient Safety Goals, related Elements of Performance (EPs), and develops a Plan of Action for all areas of performance identified as being non-compliant. The hospital also develops Measures of Success (MOS) for determining whether the organization is successful in resolving identified problems. Nightingale Community Hospital provides various medical, surgical, ambulatory care, laboratory, pediatric and emergency services and is thereby accountable for maintaining compliance as per accreditation policies. ...
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...Name Lab Section Date The Mole Concept and Atomic Weights Text Reference: Tro, Chemistry: Structure and Properties Section 2.8 - Atoms and the Mole: How Many Particles? Section 1.9 – Atomic Mass: The Average of an Element’s Atoms The purpose of this activity is to better understand the concepts of relative atomic mass, counting by weighing and the mole. Per cent composition and average atomic mass are included. Part I. Relative Atomic Masses and the Mole – Early Method When John Dalton proposed his atomic theory, he stated that the atoms of each element had a characteristic mass. He carried out experiments to determine the relative atomic mass of each element. To do this, he had to establish a standard because a single atom was too small to weigh. The standard he chose was that the mass of hydrogen would be set equal to 1.000. In a simple experiment, Dalton would measure the grams of an element such as sulfur that reacted with 1.00 gram of hydrogen. For sulfur, the reacting mass was found to be 32.0 grams, and so 32.0 was the relative mass of sulfur with respect to the standard hydrogen. (Note: The current standard for atomic mass is the most abundant isotope of carbon, C-12, with an assigned mass of exactly 12.000 amu.) The following activity will demonstrate how the relative mass method works. 1. Weigh five of the red color balls to three decimal places. Be sure to tare out the mass of the plastic cup. Record the mass in the table below. 2. Weigh five...
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...I can remember him doing all kinds of experiments in his office trying to test and discover things that really drew my interest to this major. My grandfather demonstrated the benefits of Chemistry and showed me how it is ever present in our every day life. He also taught me that Chemistry is always changing in our world around us and I want to be apart of this changing process and help the world benefit from Chemistry. I hope to see myself in a couple years being highly successful and enjoying working for a refinery as my grandfather did. I want to be able to support my family the best as possible, yet I also want to see myself loving what I do everyday and not get tired of it. In Lab #1 it was a recap of math skills that are crucial for the basis of general Chemistry. This particular lab we touched base on the rules of significant figures in calculating different formulas. Also, rounding...
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...This is a lab in which we will be using combustion to make magnesium and turn into a fine powder. We will first put the crucible on a mesh above bunser burner to heat it up to get out any moisture. We will then record the weight and weigh the magnesium in the crucible. Then we will put the crucible over a flame with the magnesium inside until it turns into the powder. There are many changes in the world. These changes are like changes in chemistry because some you don’t see and there is some you do see. The changes that you can see in chemistry are called physical changes. A physical change is when it does not change the substances chemical identity, although in a chemical change it does change its chemical identity. The actual atoms still remain they are just rearranged into new ways that make them into the substance that they need to be. Even though a substance changes it still keeps the same mass because of the law of conservation of mass. The law of conservation of mass states that mass can’t be created or destroyed. There are three (technically 4) states of matter. The states of matter are solids, liquids, and gases (plasma). These states can transform into one another but not lose their mass do the law of conservation of mass in a closed...
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