Lab Report Essay

Submitted By BryceGantt1

Words: 508

Pages: 3

Open Document

Abstract
We used apples pieces that were placed in five different cups with different amounts of molar concentrations of sucrose. We recorded the initial mass and the final mass after we left the pieces in the cups overnight.
Purpose: The purpose of this experiment is to understand how water potential works by determining the water potential of apple cells.
Background: The measure of the relative tendency of water to move from one area to another, and is commonly represented by the Greek letter Ψ (Psi). Water potential is caused by osmosis, gravity, mechanical pressure, or matrix effects including surface tension. It is useful in understanding water movements within plants, animals, and soil. * http://www.biology-online.org/dictionary/Water_potential
Hypothesis: We predicted that if we put .2m of sucrose in distilled water, then the final mass of the apples will decrease.
Materials/ Equipment used: * 6 250-mL beakers * Sucrose solution * Cork borer * Apples * balance * Paper towel * Plastic wrap * Knife
Procedure:
1. Pour 100 mL of the assigned solution into a labeled 250 mL beaker. Slice an apple into discs that are approximately 3cm thick. 2. Use the cork borer (approx. 5 mm in inner diameters) to cut 24 apple cylinders. Don’t include the skin of the apple. You need four apple pieces for each beaker. 3. Keep your apple cylinders covered in a beaker until it is your turn to use the balance. 4. Record the initial mass of the four cylinders together and then put them into one of the beakers with the sucrose solution. (Repeat until all sucrose solutions have four apple cylinders in them). 5. Cover the beakers with plastic wrap to prevent evaporation. 6. Let stand over night 7. Remove the pieces from the beakers, blot with paper towels and record final mass.
Data Collected: (A) Contents in beaker | Initial Mass | Final Mass | Mass Difference (%) | % change in mass

Lab Report Format

ANATOMY & PHYSIOLOGY CLASS: WRITING LAB REPORTS The following is an explanation of the format that is to be used for writing lab reports. There will be lab activities for each Chapter in the textbook. 1. Lab Report grades are given the same value as a test grade. It is very important that they be done correctly and thoroughly. 2. All lab reports should be typed using Times New Roman and only 12 font. (no exceptions) 3. In the upper left hand corner include your name, high school, and A & P…

Words 1045 - Pages 5

lab report Essay

CHM1032L pre/post lab instructions Preparation is a key to success in this lab. For this reason, you are required to thoroughly read through the experiment information presented in the lab manual, and complete a pre-lab for each experiment you do. The prelab must be completed prior to the day of the experiment. Each Friday I will ask to see your completed prelab before I allow you to enter the lab. If you have not finished the pre-lab, I will not allow you to enter the lab and you will receive…

Words 1046 - Pages 5

Drosophila Lab Report

Drosophila Lab Report By Logan Aker University of Colorado, Boulder Principles of Genetics Lab, MCDB 2151, Tuesday 4 – 5:50pm TA: Alexander Martinez Abstract In this lab, we carried out two different crosses using Drosophila; a monohybrid cross and a sex-linked cross. This lab specifically tested Mendel’s laws of independent assortment and the law of segregation in genetics. We selected males and females of two different phenotypes and mated them (and their succeeding offspring)…

Words 1729 - Pages 7

Spectroscope Lab Report

Spectroscope Lab Report Naudia Blanton Period 9 Due: 1-2-14 Abstract: The purpose of the Spectroscope lab is simple. It is basically to see the spectrum of different light sources. Some of the light sources included are sunlight and a candle. It focuses on the difference between their spectrums. Background: Electromagnetic Spectrum - The range of wavelengths…

Words 445 - Pages 2

Lab Report Essay

Kinetics Lab Report Chemistry 152, Fall 2013 Kelli Forbes Susan Borowski Section: 5 September 2013 Abstract: For this experiment the main objectives were to determine the best wavelength to use for a Beer’s Law Analysis for the dye assigned which happened to be brilliant blue. The molar absorptivity of Brilliant Blue at 622.0 nm had an absorbency of 0.321. These results were obtained by completing a series of five cuvets…

Words 390 - Pages 2

Momentum Lab Report

Lab report #5 In this experiment, we used a nearly frictionless surface to compare velocity characteristics to that of momentum, suing different weights, as well as bouncing carts and sticking carts together. This is important to understand, because momentum is a combination of weight and velocity, where as velocity is independent of weight. The materials we used for this experiment include 2 carts, with weights of 139.7 grams and 290.4 grams. We also used springs on the ends to “bounce”…

Words 459 - Pages 2

Lab Report Essay

MEC 325/580 Lab Report CNC Machining Lab Report Date: March 18, 2013 Group Leader: Jian Wu Team Members: Group Number: G4 Regment No.: D Insturctor: CONTENTS 1.Objective and introduction. 2.Principles and practice. 3.Design and result. 4.Conclusion and recommendations. Appendices 1. Objective and introduction * Objectives Operate the CNC milling machine using G-codes, M-codes in a CNC program. * Equipment: Minitech CNC machine (Series 2) * Machine…

Words 1090 - Pages 5

Lab Report Essay

Sheffield International College AS1b SE FC Lab report Title:Lab report of the constant of elasticity Group:S204 Student ID:25436 Teacher:Simon Dale Elasticity experiment report Introduction: In physics, elasticity is the tendency of solid elastomeric material, while after deformation recovering to the original shape. And spring is one of the elastic objects which can return to the original size when forces were…

Words 901 - Pages 4

lab report Essay

DO NOT COPY ANY MATERIAL FOR THIS REPORT. IF YOU COPY FROM THE LAB MANUAL OR ANOTHER SOURCE YOU WILL RECEIVE A ZERO FOR THE REPORT. WRITE EVERYTHING IN YOUR OWN WORDS. Experiment (Input Number): (Type full title here.) Name Date Class Title and Section Instructor: Katherine Walton Objective In this section you will discuss about the purpose of the experiment. It should only be a few sentences long and should include information pertaining to what it is you are trying to analyze…

Words 567 - Pages 3

Lab Report On Density

9/26/13 I have completed this lab report in accordance with the NA Honor Code. X_______________________________________________________ An Introduction to Calculating Density Introduction: Purpose: To determine the density of different substances using mass and volume measurements that have been calculated. Also, to familiarize oneself with the materials in the laboratory and to investigate the precision of measurements using precision of error. Hypothesis: If the density of a solid and…

Words 1492 - Pages 6