GCSE Science – Investigative Skills Assignment – Marking Guidelines Chemistry 1.2 – Viscosity of Oils For submission in May 2007 or May 2008 Please mark in red ink‚ and use one tick for one mark. Subtotals for each part of each question should be written in the right hand margin. Please add annotations where necessary to explain why marks have or have not been awarded. Enter the marks for Section 1 and Section 2 and the total mark on the front cover of the answer booklet. The teacher must sign and
Premium Measurement Liquid Ball bearing
examine the viscosities of ideal and non-ideal solutions. The ideal being the toluene/p-xylene and the non-ideal being the methanol/water. The second objective of this lab was to investigate the temperature dependence of viscosity (Halpern‚ 17-1). Introduction: Viscosity is the resistance to flow of a certain fluid. In this experiment two solutions are used. According to the definition of viscosity mobile liquids have a relatively low viscosity. Fluidity is the reciprocal of viscosity‚ given
Premium Viscosity Solution Liquid
waste of varying color‚ viscosity‚ shape‚ odor and texture. Usually exits the body through your pooper‚ speed‚ noise and degree of pain may vary depending on what you ate. even the soda at taco bell makes me poop.Bodily waste of varying color‚ viscosity‚ shape‚ odor and texture. Usually exits the body through your pooper‚ speed‚ noise and degree of pain may vary depending on what you ate. even the soda at taco bell makes me poop.Bodily waste of varying color‚ viscosity‚ shape‚ odor and texture
Premium Body Smell Carbonated water
39. The Viscosity of Liquids After studying the present lecture‚ you will be able to Define viscosity and viscosity coefficient Outline the method to measure viscosity using Ostwald viscometer Determine the average molecular weight of a polymer Determine the surface concentration of 1-butanol in aqueous solution Measure the distribution coefficient of a solute betweenn two solvents 39.1 Introduction Viscosity‚ one of the transport properties‚ arises because of intermolecular attractive and
Premium Viscosity Liquid Concentration
Viscosity Science Lab Purpose: To determine of changing the viscosity will affect the time it takes for a marble to flow through a liquid. Hypothesis: If a marble is dropped into dish soap and corn syrup‚ than I predict that the marble in the dish soap will travel faster than the marble in the corn syrup because I know that the viscosity of the corn syrup is thicker than then the viscosity of the dish soap. Also‚ the particles in the corn syrup are more compact than those in the dish soap
Premium Viscosity Liquid Scientific method
1 LAB SHEET - VISCOSITY OF GLYCERINE Aim: To measure the viscosity of glycerine using Stokes ’ method in which steel balls are allowed to fall through glycerine. Theory: (i) If a body of mass m falls through a viscous fluid‚ it will accelerate until the combination of the viscous force (or drag) FD‚ and the buoyancy force FB balance the gravitational force Fg (= mg) FD + FB = Fg (1) When this equilibrium is reached‚ the body continues to fall‚ but at a constant velocity‚ called the terminal
Premium Viscosity
IB CHEMISTRY Unit 6: KINETICS STANDARD LEVEL: Number Objective Rates of Reaction Define the term rate of reaction. Describe suitable experimental procedures for measuring rates of reactions. Analyze data from rate experiments. Students should be familiar with graphs of changes in concentration‚ volume and mass against time. Collision Theory Describe the kinetic theory in terms of the movement of particles whose average energy is proportional to the temperature in Kelvins. Define the term activation
Free Chemical kinetics Chemical reaction Rate equation
ry SL Chemistry Name______________________________________________ IB Guide to Writing Lab Reports Standard and Higher Level Chemistry 2010-2011 Table of Contents page 1 Explanations‚ Clarifications‚ and Handy Hints page 2 - 13 IB Laboratory Evaluation Rubric page 14 - 15 Formal Lab Report Format page 16 Error Analysis Types of Experimental Errors page 17 Error Analysis: Some Key Ideas page 18 Precision and Accuracy in Measurements A Tale of Four Cylinders
Premium Measurement Uncertainty
6.1.1 If the reaction produces heat (increases the temperature of the surroundings) then it’s exothermic. If it decreases the temp (i.e. absorbs heat) then it’s endothermic. Also‚ the yield of an equilibrium reaction which is exothermic will be increased if it occurs at low temps‚ and so for endothermic reactions at high temperatures. 6.1.2 Exothermic : A reaction which produces heat. Endothermic : A reaction which absorbs heat. Enthalpy of reaction : The change in internal energy (H) through
Free Thermodynamics Enthalpy Temperature
Lab report: Viscosity of Liquids Introduction This experiment focuses on measurements of different trials of various concentrations. The collected data is used to compare and contrast to the ideal binary solutions and their components. The Ostwald viscometer is a useful laboratory equipment to measure the viscosities of many binary solutions. Background Molecules have the ability to slide around each other‚ result in a flow. Such a flow has a resistance called viscosity. Microscopically
Premium Viscosity Fluid dynamics