SCIENCE EXPERIMENT REPORT AIM : To show the percentage of oxygen in air. HYPOTHESIS : The percentage of oxygen in air is about 20%. APPARATUS AND MATERIALS : Glass trough‚ gas jar stand‚ metre ruler‚ candle‚ marker pen‚ matches‚ plasticine. Figure 1 VARIABLE : i. kept constant : the size of the candle ii. manipulated : the amount of oxygen inside the gas jar iii. responds : the level of water in the gas jar PROCEDURES : 1. Use some plasticine to fix a
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I. Objective The first objective of the measurement of thermal conductivity & one-dimensional heat conduction experiment was to identify three different metal specimens by comparing their experimentally determined thermal conductivities to known thermal conductivity values of existing metals. The second objective of the experiment was to establish a connection between the thermal conductivities & temperatures of the metal specimens. Thirdly‚ the contact resistance of the interfaces between
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For the seventh experiment we will be performing different type of test to see how different chemical react with each other. The first experiment will be a demonstration the professor will give to the class. the first experiment you will be performing will include a test tube you will add a couple drops of dilute hydrochloric. you will add this to five little pieces of zinc metal. In next experiment you will performed you will put 2 ml of 3% hydrogen peroxide solution in a test tube .you will also
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Laboratory Experiment 1 EML 3303C Mechanical Engineering Measurements Summer 2014 Authored by: Cody Appleby‚ Gregory Harmeling‚ and Joseph Pernici May 26th‚ 2014 Lab section: C014 Monday 11am-1:50pm TA: Eduardo Castillo Work station 8 1 Abstract This lab consisted of three different measurements; measuring length‚ flow rate‚ and resistance. The reason for this lab was to use statistical concepts learned in lecture to analyze data and to become more familiar with the lab equipment
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Experiment 1: Error‚ Uncertainties and Measurements Laboratory Report Jan Luke Mendoza‚ Alexis Vienne Munar‚ Paula Murakami‚ Giorla Joanne Negre Department of Math and Physics College of Science‚ University of Santo Tomas Espana‚ Manila Abstract Throughout the experiment the main goal is to find out about the realities in taking measurements‚ that is‚ that there will always be an uncertainty for each acquired value. And to find out and recognize these uncertainties was handled in the
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liquids Variables: Independent variable: Penny Dependent variable: Number of Drops of Water Control variables: Penny‚ pipette‚ paper towel size‚ same scientist Materials: Penny Pipette Water Mystery liquid Paper towel Procedure: Step 1: Rinse a penny in tap water and dry completely. Step 2: Place the penny on a DRY paper towel. Step
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Chemical Systems in the Laboratory’1. Specifically‚ 1.90 grams of KCL was weighed in a 250ml beaker and dissolved in 25 ml of deionized water. This solution was then quantitatively transferred to a 250ml volumetric flask. Proper technique is needed for quantitative analysis. This transfer was done to ensure that there was no detectable KCl left in the beaker. After transferring the solution add 3 drops of AgNO3 to the rinsed beaked to check the completeness of the transfer. Now take the volumetric flask
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The purpose of Experiment 36 is to identify the anions present in an unknown solution based on the chemical reactions with various chlorides. In this experiment‚ Pb2+ was present in the unknown solution‚ while the presence Hg22+ is in doubt‚ and Ag+ is absent. To begin‚ the first part of the experiment involved analyzing the results from the experiment with the solution with equal volumes of AgNO3‚ Pb(NO3)2‚ and Hg2(NO3)2. Based on the results and observations obtained from the tests with the stock
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microbes in a laboratory is known as the culture medium. Some bacteria can grow well on just about any culture medium while the other required special media‚ and still others cannot grow on any nonliving medium yet developed. Microbes that are introduced into a culture medium to initiate growth are called an inoculum. The microbes that grow and multiple in or on a culture medium are known as a culture (Tortora‚ Funke‚ Case‚ 2010‚ p.164). Basically‚ all culture media are liquid‚ semi-solid‚ or solid
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water‚ it will affect the swimming speed of the paramecium. The various students groups have individual experiment of how dose NaCl affect swimming speed of Paramecium‚ but the experiment did not show the result clearly to students. Therefore‚ after they finish the presentation‚ most of the students want to find out the chemical NaCl increases swim speed of Paramecium. Experiment Design The experiment prediction is if we add 4mL of Paramecium to 25mL of 0.2M NaCl and 225mL of Dryl’s solution‚ then Paramecium
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