Chemical reactions * Chemical reactions occur when substances undergo chemical changes to form new substances * Production of gas and change of color are sings of chemical reactions * Chemical reactions rearrange atoms * A reactant is a substance or molecule that participates in a chemical reaction * A product is a substance that forms in a chemical reaction Energy and Reactions * Energy must be added to break bonds. * Many forms of energy can be used to break bonds:
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Observations of Chemical Changes Page. 14 Objectives: The objectives of this experiment are: 1. To observe some properties of chemical reactions 2. to associate chemical properties with household products Background Information: Chemical changes are often accompanied by physical changes. Three that you should not see in this lab are changes in temperature‚ presence of a flame‚ and evolution of light‚ as when as firefly glows. Three physical changes that indicate a chemical change may have
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Food Safety and Quality Guidelines : Manual for Hotels‚ Restaurants and Food Vendors Confederation of Indian Industry (CII) has always been proactive in supporting and providing inputs to Government Policy and value adding by providing guidance to industry to meet new challenges for increasing competitiveness. Ensuring "Consumer Safety" ranks high on the CII agenda in the area of Food Quality. It is in this context that a Committee on Food Safety and Quality has been set
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There are many types of chemical reactions‚ five general ones of which I will be describing. Chemical changes are a result of chemical reactions. All chemical reactions involve a change in substances and a change in energy. Neither matter nor energy is created or destroyed in a chemical reaction‚ only changed. There are so many chemical reactions that it is helpful to classify them into 5 general types‚ which include the following: synthesis‚ combustion‚ decomposition‚ single-replacement‚ and double-replacement
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The purpose of the lab was to find out the chemical elements based on the color of the flame that elements make by their reaction. The work we completed in the lab was testing the chemical effects of the flame from the chemicals. We tested different elements and wrote down our observations. I accomplished the knowledge of testing chemicals and making responses based on our observations.Electrons are the particles found in the chemicals that may be responsible for the production of colored light.
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FUTURE OF CHEMICAL WARFARE INTRODUCTION Background 1. Chemical Warfare is a method of warfare in which toxic or incapacitating chemicals agents are used to further the goals of the combatants. The concept of Chemical Warfare is as old as warfare itself. Until the 20th century such warfare was primarily limited to starting fires‚ poisoning wells‚ distributing smallpox-infected articles‚ and using smoke to confuse the enemy. The most extensive and large-scale use of Chemical Weapons was witnessed
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Chemical and Biological Weapons are Your FriendsAs we go on our daily lives‚ terrorists are buying and developing dangerous and hazardous biological and chemical weapons to obliterate us. They do not care who they harm; their mission is to cause terror‚ to spread chaos‚ to engulf the world in anarchy. They want to know that they are making people terminally ill and sick. They will be enjoying a job well done while your skin is covered with excruciating painful blisters‚ or while you tell your loved
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A car accident is part of a list of problems on the road. Car accidents can happen to drivers anytime‚ anywhere‚ and even with those who are careful. This essay will deal with the road safety problem. I will discuss about main causes of the car accidents‚ and possible solutions for this problem. Now let’s look at the problem more closely. Every year the number of car accidents increase‚ due to increasing the number of cars on the road. (Preston‚ 2007) The main causes of the car accidents are driver
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Management of Health and Safety Element 2 Setting Health & Safety Policy 1. (a) Outline the general content of the THREE sections of a health and safety policy. (6) (b) Explain why the health and safety policy should be signed by the most senior person in an organization‚ such as a Managing Director or Chief Executive· Officer. (2) Answer (a) The three sections of a policy are the ’statement of intent’‚ which both demonstrates management’s commitment to health and safety and sets goals and objectives
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we can learn to observe physical properties of varying substances as well as to use chemical reactions to observe chemical observe the chemical properties of varying substances. In experiment #1‚ we were able to detect physical properties of the aluminum and copper sulfate simply by looking at the substances. We then combined the two substances to see if they would create a chemical reaction and test the chemical properties. After being combined‚ bubbles and gas were created and the color of the
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