agent‚ particularly in the determination of silica in iron and steel and in cement and other silicate materials. It is also used as a solvent for sulfide ores for the determination of copper and other metals‚ in the separation and determination of the alkali metals sodium and potassium. In the manufacture of anhydrous magnesium perchlorate‚ the best of the absorbents for water in analytical work. It is also a strong standard acid for the titration of bases. A chemical reaction that takes place is actually
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iLab #2 Carbohydrate Tests INTRODUCTION - For this experiment we will be testing four different bacteria with four different tests‚ using glucose‚ lactose‚ and sucrose. Hopefully we will use the information from those test to be able to identify the organisms in each of the samples from the case studies. We will use the results from the four different tests along with the information of how different bacteria react to match up to the case
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Matter: anything that has mass and takes up space Particle Theory: the scientific statements that summarize about particles of matter 1. All matter is made up of particles that contain spaces between each particle 2. Different substances are made up of different types of particles 3. Particles are always in constant motion 4. The movement of particles will increase if temperature rises 5. Particles are attracted to each other Pure substance: a substance that consists of only 1 type of particle
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To determine the percentage by mass of Calcium carbonate in an egg shell Aim: is to find and work out the percentage of calcium carbonate by mass in eggshells by using acid base “back titration” Introduction: Calcium Carbonate‚ CaCO₃‚ is a compound which is polymorphic and therefore means that it can be found in a variety of different objects or organisms. For example: Rocks (limestone‚calcite)‚ sea snail shells‚ Eggshells‚ pearls and many more. This investigation will focus on finding out the
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occur. Some general rules: 1 Most nitrate salts are soluble 2 Most salts containing the alkali metal ions and the ammonium ion are soluble 3 Most chloride are soluble in water except AgCl‚ PbCl2‚ Hg2Cl2 4 Most compounds containing sulphate are soluble in water‚ except BaSO4‚ PbSO4‚ CaSO4 5 Most compounds containing OH- ion are not soluble in water‚ except hydroxides of the alkali metal (Group 1A) and Ba(OH)2 6 Others are minorly soluble in water‚ eg sulphide‚ carbonate‚ chromate
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OUR OWN HIGH SCHOOL‚ Al WARQA’A‚ DUBAI SUMMATIVE EXAMINATION-2‚ MARCH -2014 Name: ______________________________________ Grade: VII Sec: ____ M Marks: 90 Time: 2 1/2 hours Subject: SCIENCE Date: 09/04/2014 General Instructions: 1. This question paper has 4 pages. 2. All questions are compulsory. 3. Question numbers 1 to 10 are questions of one mark each. 4. Questions 11 to 16 are very short answer questions of two marks each. 5. Question numbers 17 to 24 are short answer questions of 3 marks each
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ITS SETTING Background of the Study Soap is a substance used for many different kinds of cleaning. It also comes in many forms and content based on its uses. Bar soap is the most common form of soap which is usually made by treating fat with an alkali‚ as sodium potassium hydroxide‚ and consisting chiefly of the sodium potassium salts of the acids contained in the fat. The soaps may also have different purposes aside
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atomic number 17‚ and a mass of 35.45. When these two elements are put together‚ they make Sodium Chloride (NaCl)‚ which is table salt that people use every day. In the periodic table‚ there are many different classifications of the elements like‚ Alkali metals‚ Alkaline Earth metals‚ Halogens‚ and Noble Gases. Out of all of the classification of
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TABLE OF CONTENTS Executive Summary 3 Recognizing Opportunities 4 Company Structure 5 Issues Facing Asahi Glass 5 Questions to Answer 6 Conclusion 6 Recommendations 6 Executive Summary Asahi Glass Company was founded in the early 1900’s to relieve Japan’s dependence on foreign imports. It was the first successful endeavor into the flat glass industry. The company was able to continue to succeed through mergers‚ acquisitions‚ and organic growth. The company’s core businesses
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Syneresis - the process by which a liquid is separated from a gel owing to further coagulation Saturated fat: It comes mainly from animal food products at a normal room temperature. HDL cholesterol: Lipoproteins‚ which are combinations of lipids (fats) and proteins‚ are the form in which lipids are transported in the blood. HDL cholesterol is considered the "good" cholesterol. The higher the HDL cholesterol level‚ the lower the risk of coronary artery disease. Triangle test- A sensory-based
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