Purpose This experiment shows how different concentrations of acids and bases in a solution affect its pH level. When acids and bases are combined in a solution‚ they neutralize each other. This means that depending on the concentration of both acids and bases in a solution‚ the pH will vary. A neutral pH level is 7; anything below that level is known as an acidic solution‚ while anything above is known as a basic solution. To find out the pH‚ the solutions will be diluted and tested with different
Premium PH Acid Base
Exercise No. 2 COLLIGATIVE PROPERTIES (Full Report) I. INTRODUCTION Colligative properties In liquid solutions‚ particles are close together and the solute molecules or ions disrupt intermolecular forces between the solvent molecules‚ causing changes in those properties of the solvent that depend in intermolecular attraction. For example‚ the freezing point of a solution is lower than that of the of the pure solvent and the boiling point is higher. Colligative properties of solution are those
Premium Water Solution Gas
Flyne Anderson Experiment done - 30 September 2012 Report submitted - 02 October 2012 Chemistry 111 - Experiment 4 : Properties of Gasses Purpose: The purpose of the experiment is to learn about the properties of gasses‚ and identify them by their physical and chemical properties by combining different elements and observing how they react with each other‚ and outside influences. Materials/Procedure: I gathered my materials from the material list and set up my data table. I combined the zinc
Premium Oxygen Carbon dioxide Hydrogen
Derricka Joe Period 5 1 Oct.‚ 2014 Lab Experiment One: Physical Properties Lab Analysis: For our first unknown‚ we observed the color and odor of the substance. The substance was a clumpy‚ white‚ crystal-like substance and it smells like new plastic. When we tested the solubility in water it resulted insoluble and in ethanol it resulted soluble. This substance could not be tested for electrical conductivity because the water was insoluble. We then tested for the PH value and it was neutral. The
Premium Oxygen Water Ethanol
Experiment 8 “Lipids” and the purpose of the lab is to become familiar with the properties and reactions of certain lipids called fats or oil. For this lab‚ students are testing the properties and reactions of lipids and soap will be prepared and its properties will be tested. To begin the experiment‚ place 5 mls of water‚ ethyl alcohol‚ chloroform‚ and toluene in to four clean test tubes and add 1 drops of cottonseed oil to each test tube. Shake it and record your observation. To do part B‚ in three
Premium
Monica Perez Experiment 8: Acetylsalicylic Acid Experiment 01/25/2013 CHM Lab- 2211 Sec 0016 Instructor: Jennifer Reed Introduction: Commonly used as Aspirin‚ acetylsalicylic acid is an analgesic (pain reliever)‚ which is one of the products of the esterification reaction between salicylic acid and acetic anhydride. This esterification occurs since the hydroxyl group from the salicylic acid reacts with acetic anhydride to form an ester. In this experiment‚ we will be able to recreate
Premium Aspirin Acetic acid Acetic anhydride
When performing this experiment make sure all materials are present this includes: Blood Pressure Probe‚ a Sphygmomanometer‚ computer with Logger Pro software‚ Stethoscope‚ Logger Pro cables‚ and a timer if you so chose. Using the Blood Pressure Probes‚ Logger Pro cable‚ and the software you are ready to begin the experiment. Have a scary video pulled up from youtube that is within the time limit of 0-120 seconds. It would be wise to have the video around 60 seconds because that is the time frame
Premium Blood Blood pressure Hypertension
The purpose of this lab was to determine if a there is a change in mass when a gas is produced and determine if gas has mass. To conduct this experiment‚ the group must be careful not to let the Alka-Seltzer tablet get wet before the bottle is closed by wiping the lip of the bottle and the cap so it remains dry‚ or risk gas escaping into the air and not being captured by the bottle. Also‚ the group must be sure to close the bottle tightly with the cap‚ because gas may escape this way as well. During
Premium Chemistry Water Oxygen
Does Exercise Affect Blood Pressure and Heart Rate? Hypothesis If an individual is put through vigorous exercises‚ then his/her blood pressure and heart rate will be affected because of the increase in activity. Dependent Variables Heart Rate (measured in bpm) Blood Pressure (measured in mmhg) Independent Variables Height Weight Physical Fitness Speed on completing exercise Controlled Variables Types of Exercise Materials Cufflink Heart Monitor Test Subjects 1-5 Procedure
Premium Heart Blood Artery
CHEE MAO HAN GROUP : GROUP 3 EXPERIMENT NO. : 2 EXPERIMENT TITLE: DETERMINATION OF THE ACTIVATION ENERGU FOR THE REACTION OF BROMIDE AND BROMATE IONS IN ACID SOLUTION DATE : 14 FEB 2012 (TUESDAY) LECTURER : DR.HA SIE TIONG EXPERIMENT 2 Title Of The Experiment: Determination Of The Activation Energy For The Reaction
Premium Chemical reaction Chemistry