Chemical Reaction:- The transformation of chemical substance into another chemical substance is known as Chemical Reaction. For example: rusting of iron‚ setting of milk into curd‚ digestion of food‚ respiration‚ etc. In chemical reaction new substance is formed which is completely different in properties from the original substance‚ so in a chemical reaction chemical change takes place. Following are the signs of chemical reaction: (a) Change of state of substance. (b) Change of colour of substance
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Introduction: Chemical equilibrium is when the concentrations of the reactants and products have reached a state where reactions occurring in one direction are at the same rate of reactions occurring in the opposite direction. This process‚ called dynamic equilibrium‚ is the main subject of Le Chatelier’s Principle. Le Chatelier pointed out that if a system at equilibrium is subjected to a stress that momentarily causes the system to be not in equilibrium‚ a spontaneous change will occur to
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Energy‚ often in the state of heat‚ is involved in chemical reactions and phases changes. Changes in energy‚ can translate in temperature differentiations. In such a case‚ energy is transferred as heat. The quantity of heat exerted in a reaction referred to as (joules) can be identified through the following equation: Heat Exerted= (Mass of Sample) x (Specific Heat) x (Change in Temperature) q=msΔT Within a calorimeter is where the reactions within this lab take place. A calorimeter allows the
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January–June‚ 2011 Factors Affecting Impulse Buying Behavior of Consumers at Superstores in Bangladesh Wahida Shahan Tinne* Abstract Impulse purchase or impulse buying describes any purchase which a shopper makes‚ through it was not planned in advance. This paper is an attempt to find out the factors that affect consumer impulse buying behavior at superstores in Bangladesh. The impact of various variables like discount offer‚ various scheme‚ promotional activities‚ retail store offer‚ display of product
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lessons‚ especially “discuss and present” activity. Teacher A wants to make the language learning tasks more enjoyable and motivating. She also wants to lower affective barriers in class by including artistic areas such as music‚ drawing‚ drama‚ etc. in the lesson. She has chosen the song “As long as you love me” by Backstreet Boys to use in a lesson about Love. Could you suggest two different activities that she can use with the students? For each activity‚ please specify also the language and skills
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There are a lot of activities to enjoy around us. We are able to divide two type of activities such as indoor activities and outdoor activities. Some people like outdoor activities such as a baseball‚ football. Others like indoor activities such as volleyball‚ table tennis. In case of indoor activities‚ regardless of weather‚ people want to play sports‚ they can enjoy them. However‚ I prefer playing outdoor activities. There are two reasons why I think so. First‚ outdoor activities help people to be
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People may say that extracurricular activities are a waste of time for everyone but that’s not the case‚ since extracurricular activities help with getting fit‚ working on focus‚ and management. I think it’s in everyone’s best interest to let students do extracurricular activities since it will help their students tremendously. Although sports or clubs might not be for everyone it doesn’t mean it shouldn’t be there because it could be beneficial for others. One of the main struggles with not just
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2013 Title: Observations of Chemical Changes Purpose: To observe some properties of chemical reactions and to associate chemical properties with household products. Procedure: In this experiment I used a 96-well plate to hold each of the chemical reactions that occurred during this lab. Using a pipet‚ I added two drops of one chemical with two drops of another chemical and observed the effects of each reaction. Data Table 1: Experimental Data Well # | Chemicals | Observations | |
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Experiment #17 Classification of Chemical Substances Prepared for: Dr. Robert O’Reilly By: Kudaibergenov Baizak 20.11.2013 Nazarbayev University Introduction While many thousands of substances are known‚ they can be classified into a few simple categories based on type of bonding that exists among the atoms in the substance. Bonds are chemical forces that hold atoms together to form molecules or compounds. These categories are ionic‚ molecular and metallic substances.
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21st‚ 2013 MC 205 Week 4 Instructor Rein Chemical Stress Testing A chemical stress test is used when a traditional stress test (called a cardiac stress test) cannot be done. A cardiac stress test requires you to walk on a treadmill or ride a stationary bicycle until your heart rate reaches a level where your heart is “stressed”. You may not be able to participate in this kind of test if you have a condition such as a stroke. In this case‚ a chemical stress test is used. This test is used to help
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