ACKNOWLEDGMENT I am greatly thankful for the cooperation and help from school authorities and the Chemistry lab stafffor the successful completion of thisinvestigatory project in the Kendriya Vidyalaya s ChemistryLab. Without their help and proper guidance my project might not have completed. Index 1. Introduction 2. Theory 3. Objectives of project 4. Experiment 1 5. Experiment 2 Theory Evaporation is the process whereby atoms or molecules in a liquid state gain sufficient energy to enter
Premium Water Evaporation Liquid
anhydrous calcium chloride pellets with more DCM‚ the solvent was evaporated‚ leaving greenish-white crystalline caffeine residue weighing about .25 mg. In order to recrystallize the caffeine‚ we used a mixed-solvent method‚ consisting of hot acetone and hexanes. The solution was cooled and a vacuum filtration was done to remove the caffeine crystals. The final product weighed about 3 mg. Introduction Caffeine is an organic compound that is found in tea leaves and coffee beans. It is a basic
Premium Solvent Chemistry Tea
Lab Report 2: Quantitative Analysis Finding the Percentage Composition of Nickel in an Unknown Compound Introduction: This section of lab was about using analytical chemistry and learning how to identify the amount of nickel in an unknown substance. The purpose was to use gravimetric analysis to quantitatively separate and weigh insoluble reaction products as well as utilize the mole method to compute the amount and percentage of nickel in an unknown nickel sample. The chemical reaction that took
Premium Chemistry Filter paper Analytical chemistry
quality. This glue that we made can’t be used as stick glue because the glue that we made is liquid. This study is limited only for paper‚ cloth and wood. F. Definition of Terms: Cigarette filter- is a foam-like found at the end of the cigarette. Acetone - is a liquid solvent for certain oils‚ etc. - a co9lorless‚ extremely flammable liquid‚ used as a solvent. Nicotine - a poisonous liquid in tobacco - a poisonous alkaloid‚ derived from the tobacco plant used in medicine and as an insecticide.
Premium Cigarette Filters Tobacco
potential health hazards associated with the following three situations: i) A construction company is about to start work demolishing an old building which is known to contain blue asbestos (crocidolite). ii) A company stores large quantities of acetone and is concerned about the possibility of a chemical spill. iii) A freezing works has identified a potential hazard – a leak in pipe work which could result in a major ammonia leak. For the above three substances undertake a toxicological assessment
Premium
Lab #4 The Synthesis of Organic Polymers CHM2123‚ Section C October 21‚ 2014 Introduction: Organic polymers are macromolecules that are composed of smaller molecules called monomers. There are two main groups of polymers: natural polymers and unnatural (synthetic) polymers. Natural polymers include proteins such as cellulose and starch and are a necessity for our existence. On the other hand‚ synthetic polymers such as the polycarbonate in our lab goggles
Premium Polymer Solvent
ratios that govern the disappearance of reactants and the appearance of products. Knowing the mole ratios in a balanced chemical equation is essential to solving stoichiometry problems. General Chemistry 1 Lab Acetone Copper wire 3
Premium Chemical reaction Chemistry Mole
Endocrinology – Case study 1 A 37 year old female with a recent history of dizziness‚ shakiness and intolerance to heat and sees her GP. Her blood tests come back as normal apart from a thyroid stimulating hormone (TSH) of <0.05 mU/l and free thyroxine (T4) of 30.1 pmol/l. Normal Ranges of TSH‚ T4‚ and T3 The results received from the patient blood tests indicate abnormal levels of these hormones. The reference ranges of these hormones are: TSH has a range of 0.4-4.5 mU/l‚ free T4 has a range of
Premium Diabetes mellitus Blood Obesity
determine the solvent wherein the tannins can be best dissolved using Distilled water‚ Alcohol‚ Ether and Acetone. Table 3 Results of Solubility test Distilled water Soluble Alcohol Insoluble Ether Insoluble Acetone Insoluble The table 3 shows the result of solubility test conducted using Otaheitte Gooseberry leaves. Tannins are soluble in water and insoluble in alcohol‚ ether and acetone (organic solvents). 2.3 Melting Point 3. Chemical Properties of Tannins Expected Actual a). Ferric
Premium Solvent Solubility Brown
INTRODUCTION 1.1 Background of the Experiment Mass density describes how heavy an object is. Defined by the Greek letter ρ‚ read as rho‚ density is a basic yet important physical property of matter. For a bulk body without accounting its existing pores and voids‚ density is represented by the ratio of its mass and volume. It is given by the equation ρ= massvolume 1. The SI unit of density is kg/m3. However‚ its CGS units‚ g/cm3 or g/ mL‚ are the most commonly used ones in the laboratory. The
Premium Density Water Volume