Exothermic vs Endothermic Worksheet 1. Change 1. When calcium carbonate forms calcium oxide and carbon dioxide heat is absorbed. Change 2. Calcium oxide releases heat when shaken with carbon dioxide. Which line BEST describes these changes? 1. change 1 is exothermic; change 2 is endothermic 2. change 1 is endothermic; change 2 is endothermic 3. change 1 is exothermic; change 2 is exothermic 4. change 1 is endothermic; change 2 is exothermic 2. Which of the following involves a chemical
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examine a number of different chemical reactions and determine if they are exothermic or endothermic. Apparatus: • Test tubes {Around 10-12 in number} • Test-tube rack • Spatula • Digital thermometer { ± 0.1° C} • Digital balance {± 0.01 g} • Measuring cylinder {± 0.5cm³} • Different chemicals Introduction/Theory: Exothermic reactions are those reactions that release energy in the form of heat. Endothermic reactions need to absorb energy in the form of heat
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9A Endothermic Bilal Ali Aim: To demonstrate and observe how an endothermic reaction works. Hypothesis: In these practical’s there were a lot of observations: 1) Magnesium and Hydrochloric Acid: what I observed was at the start it was 20.5oc then when I added hydrochloric acid it increased 23.7oc and there was steam coming out. 2) Hydrochloric Acid and Sodium Hydroxide: the initial temp was 20oc then when I added Sodium hydroxide it went up to 29℃. But there was no visual reaction. 3) Anhydrous
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The movie that we watched was about reviving a person from the dead. This is said to be done in the future but they had already started researching how to use ice as a power to revive a clinically dead person. They used ice as a method to preserve a body and now they are planning on how to revive a person through the use of nanotechnology that can repair all the cells that were ruptured n the freezing process. The technology that they were referring in the movie is called Cryonics. This Cryonics
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CIVIL LITIGATION AND DISPUTE RESOLUTION (Corporate) RESOURCE PACK Objectives: You should regard this pack as a tool to help you understand the CPR in context and to start drafting the legal documents covered by it. You are encouraged to add your own precedents as you collect these and to file your case papers for the 2 case studies in the sections provided. This pack contains details of both the CPR and some of the documents that are drafted by solicitors during the different stages of Civil Litigation
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of medical product to treat an injury is crucial for the injury to heal. A common product used in treatment of injury is a cold pack. After injury‚ it is common practice to ice the affected area to reduce swelling and therefore soothe the area. There are many types of cold packs that can be used‚ the most common being ice in a bag of sorts. Another popular kind of ice pack is disposable that consists of a small‚ thin compartment that contains a salt (NH4NO3) inside a larger‚ thicker compartment that
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Marco Grogan‚ Emily Hendrigan Group 6‚ period 5 10-05-17 A cold pack is a device that creates an endothermic reaction by mixing water and one of many possible chemicals. In the scientists’ experiment they will find out which chemical will keep the water cold the longest. The independent variable for the experiment is the amount of chemicals (in teaspoons) added to each cup of water‚ while the dependent variable is the temperature of the water before and after the experiment‚ and the constant
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Thermochemistry: An Ice Calorimeter Determination of Reaction Enthalpy D. F. Nachman 6/23/2010 Abstract: An ice calorimeter was used to study the reaction of magnesium metal and 1.00M sulfuric acid solution: Mg(s) + H2SO4(aq) →MgSO4(aq) + H2(g). We found the experimental molar enthalpy of reaction to be ΔH = –355 ± 17 kJ/mol at 0°C‚ 24% lower than the textbook value of ΔH° = –466.9 kJ/mol‚ reported at 25°C. Introduction Whether a chemical reaction occurs spontaneously or is driven by an outside
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Wolf Packs: Wolves are one of the most intelligent and impressive animals in the world. They are highly social animals that depend mostly on each other to survive and thrive. Wolf packs can sometimes swell up to 20 or more members! However‚ having many members is not always an advantage. It means that they have to provide even more food to keep the pack going. Every single wolf in a pack has a job. Every wolf has a status and something that they should be busy with. If one was to look at it in
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Thermochemistry: An Ice Calorimeter Determination of Reaction Enthalpy 9/11/2014 Introduction: A chemical reaction often indicated by a transfer of energy measured in heat. By measuring this heat transfer in a constant pressurized environment‚ the enthalpy of the reaction can be used to infer certain information about a specific reactions reactants and products. The transfer of heat from outside sources in would be described as an endothermic reaction. Contrary‚ when a reaction releases heat
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