In order to determine the acidity of certain substances‚ we used moist and dry pH paper (litmus tests)‚ and observed the results. First we used dry pH paper to test the acidity of household ammonia‚ and it turned yellow. According to the legend‚ this indicates a weak acid. This is‚ however‚ not accurate as the vapor of the household ammonia wasn’t able to react as strongly with the pH paper since it was dry. Then‚ we used moist DI water pH paper with the same substance‚ household ammonia‚ and it
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Introduction And what is known about the sustainability of current groundwater‚ it is that it will not last. Ponce (2006) states” The unsustainable use of groundwater stands to significantly impact a host of hydrological‚ ecological and other natural resources and services‚ including freshwater bodies‚ and aquatic‚ riparian‚ transitional‚ and ecosystems.” All life on planet earth depends on clean freshwater to survive and It is very important that this natural resource is taken care of properly
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Bio Lab 1 Scientific Method Introduction The scientific method in action‚ designing and Performancing and experiment does thumb diameter‚ length or write diameter’s have an effect on the overall chance of winning a thumb wrestling match? In this investigation‚ we will develop a hypothesis based on physical data collected and test the hypothesis. Material Thumb‚ Ruler‚ Metric ruler Procedure 1. Measure the circumference of the thumb‚ in centimeters‚ at its widest point. Record this data in
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Discussion: There were some patterns that were noticeable during this experiment. It was noticed that all of the sprays with the metal potassium in them had turned the flame a light pink for a few seconds. The sprays that held the copper in them all turned the flame a vivid green colour‚ with some including green sparks also. Both of the sodium bottles turned the flame orange for a short time. Electrons orbit the nucleus of an atom in energy levels. If atoms are heated up to the point where the
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3.1 Ex-vivo Evaluation of the Mucoadhesiveness of Synbiotics Mucoadhesive properties prolong the retention time of the bead’s dose in the targeted site the colon [23]‚ [50]. Since the dose is intended to colonic release‚ mucoadhesion parameters play a key role in the efficiency of the form. The beads remain longer in contact with colonic mucosa when they have more mucoadhesive property. As a result the probiotics will have enough time to get released from beads and colonize the colon [37]‚ [51]
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parallel bearing surface. These specimens were perpendicular to the axial load during all the tests‚ as shown in Fig. (3.15) and (3.16). Fig. (3.15): Preparation of cube specimens Fig. (3.16): Preparation of cylinder specimens 3.6. Test procedure: This section highlights the procedures used for testing the FBLWC specimens EXPosed to compression
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Lab BCH2333 Section: 4 (Monday afternoon 1st week) Experiment 1: Carbohydrates Separation Techniques Based on Molecular Size Demonstrator: Date Preformed: January 26th‚ 2015 Date of Submission: February 2nd‚ 2015 Team #: Purpose The purpose of this experiment is essentially two-fold. Two of the four experimental procedures of this laboratory will be used to gain a conceptual and practical understanding of separation techniques used to isolate monomers from their respective polymers. Namely
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Performed: June 13‚ 2010 Lab Section: Chem-181 DL Course Instructor: Purpose In this lab‚ I will be investigating some physical and chemical properties of gases and using these properties to identify these gases when they are encountered. * Procedure 1. Hydrogen * a. Place a small piece of Zn (mossy zinc) metal into the test tube containing the diluted HCI. * b. Take the test tube and cap it with
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Lab 1: Observation of Chemical Changes Name: Tyler Lee Lab Partners: none Date of Experiment: Feb 26 2015 Location: My House Course Number: CHE111 Abstract: The point of this lab was to test and observe chemical changes when mixing chemicals together and also through heating chemicals. Experiment and Observations: The experiment performed in the first part of this lab was to mix various chemical solutions together and then observe and record the chemical changes‚ also if a chemical
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The presence of carbohydrates in a solution can be determined by a qualitative test of Molisch test. Molisch test is a general‚ sensitive chemical test and positive for all kinds of carbohydrates which in free form or in combined form. The test is based on the dehydration of the carbohydrate by concentrated sulfuric acid to produce an aldehyde which condenses with two molecules of phenol‚ resulting in a coloured compound. Molisch reagent is a solution of α-napthol in 95% ethanol. The aldehydes produced
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