Investigation Followup PROCEDURE The purpose of this experiment is to test different minerals to see where on the Mohs hardness scale they would fit. My question and problem‚ “What mineral is the hardest out of all?” My hypothesis is by looking at all mine minerals‚ amethyst is the hardest mineral‚ followed by opal‚ than apatite‚ then halite‚ than graphite and the muscovite will be the softest mineral. To begin this experiment‚ I purchased and gathered all my materials
Premium Mineral Chemistry Hardness
the Bed and Breakfast when he was murdered.The evidence shows that either he died from the tea he drunk or the Landlady might have killed him. But the policemen and the detectives are both uncertain about what happened to poor Billy Weaver.The investigation began at 9:00pm the night before the murder happened.The person that we are trying to figure out who might have killed him is the
Premium Family KILL Murder
1.0 Title of Experiment An investigation of the simple pendulum 2.0 Objectives The purpose of the experiment is to investigate the time taken on the greatest possible precision of period of simple pendulum and the value of g‚ acceleration due to gravity and two different periods of both big and small simple pendulum’s oscillations. 3.0 Summary of Result The results of the experiment have proven the acceleration due to gravity and the precision of period of simple pendulum. Besides
Premium Pendulum Mass
A Comparative Essay between “Disabled” and “An Unknown Girl” Moniza Alvi reflects on India as her hand is hennaed by “an unknown girl” “in the evening bazaar”. The predominantly upbeat mood of this poem contrasts with the pessimistic mood in “Disabled” written by Wilfred Owen‚ a soldier in the First World War‚ stating his anti-war view through a poem on the life of a young soldier “sewn short at elbow”‚ crippled by war. In his poem‚ the difference between past and present allows Owen to reveal
Premium Emotion
Submitted: October 00‚ 2014 Experiment No. 7 Unknown: 2 Compound: Table 6.1Physical Examination State Liquid Odor Smells like adhesive paste Color Pink-orange Flammability Flammable Table 6.2Physical Constant: Melting Point Parameter Experimental Theoretical (From Literature) Melting Point (oC) Trial 1 Trial 2 Average 88 88 86 86 Table 6.3Solubility Test Sample Solubility Solubility Class Water Ether 5% NaOH5% Na2CO3 5% HClConc. H2SO4 Unknown Sample + + + + + + Basic Compound Table 6
Premium Functional group Carboxylic acid Acetic acid
Conclusion: (Identity‚ % error‚ other evidence‚ how to improve) The identity of Unknown A is the compound cobalt(II) chloride hexahydrate (CoCl₂•6H₂O).This is justified by the similarities in color of red-purple crystal like grains‚ which is significant in identifying the product out of the eight suggested identities. Only two had similar characteristics which were CoCl₂•6H₂O and CoSO₄•6H₂O. Before unknown A was heated‚ there was a notable common physical property of the substance being red crystal
Premium Chemistry Chemical substance Ion
A successful crime investigation depends upon the collection and analysis of various kinds of evidence. Forensic scientists classify evidence in different ways and have specific ways of dealing with it. One major distinction is between physical and biological evidence. Physical evidence refers to any item that comes from a nonliving origin‚ while biological evidence always originates from a living being. The most important kinds of physical evidence are fingerprints‚ tire marks‚ footprints‚ fibers
Free Forensic evidence Fingerprint
Fred Kim Mr. Gillespie IB Music 12 April‚ 2011 Musical Links Investigation Music is a form of communication that varies distinctively among different countries just as each country has their own language. However‚ music does not only vary with region‚ but also with time period and the neighboring musical cultures. To investigate how two very distinct and different musical cultures can be connected through their musical qualities‚ I will compare the similarities and differences between romantic
Premium Wolfgang Amadeus Mozart Ludwig van Beethoven Music
Purpose: The purpose of this experiment was to be able to apply our knowledge of chemistry to identify 10 unknown elements that were presented to us. We were allowed to use Bunsen burners‚ hydrochloric acid‚ use PH paper to test if the unknown solution is an acid or a base‚ and precipitate each unknown solution with each other. Procedure / Data / Conclusions: Unknown #1: I found solution 1 to be KI. While doing the precipitate reactions‚ I found that it precipitates only
Premium PH Solubility Hydrochloric acid
Chemistry Lab Report Purpose The purpose of this lab is to determine the identity of an unknown liquid by measuring its density and its boiling point and try to match it with those solutions given in Table 2 of experiment 2. Procedure Part A In Part A‚ The main purpose was to find the determination of the density of the unknown (j41) and by doing that we had to determine volumes of the unknown liquid (j41) using three different volumetric devices which are graduated cylinder‚ pipette
Premium Volume Water Density