The decrease in mass is related to the strength of the intermolecular forces of attraction. 1. 2. Intermolecular forces (IMFs) can be used to predict relative boiling points. INTERMOLECULAR FORCES - ANSWER KEY (from Tro, Chapter 11, page 512) Lab 4 intermolecular forces answer key. Name Hr Intermolecular Forces at Work Pre-lab Define the following terms: ViscosityHydrogen bondingIntermolecular forceLondon Fix your answers. Lab V – Intermolecular Forces & Branching – Evaporation Posted on December 12, 2015 by nmiller17chem Purpose: The purpose of this experiment is to define the testable relationship between molecular branching and rate of evaporation at room temperature, while maintaining all other factors as constants. PDF Intermolecular forces - answer key. Our digital library saves in merged countries, allowing you to acquire the most less latency period … computer. Hypothesis (2 pts): Write a hypothesis describing which liquid would evaporate faster, water, rubbing alcohol, or acetone. These intermolecular forces, or IMFs, affect many physical properties including boiling point, solubility, viscosity, and surface tension. The strengths of these a… Examples of intermolecular forces include the London dispersion force, dipole-dipole interaction, ion-dipole interaction, and van der Waals forces. Evaporation requires the breaking of all intermolecular forces. Intramolecular forces are responsible for many macroscopic properties such as electrical conductivity, hardness, and luster. Observations Dissolved? GCC CHM 151LL: Intermolecular and Ionic Forces ©GCC, 2013 page 4 of 12 Intermolecular and Ionic Forces Compar ing IMF Using Percent Evaporation: This lab will explore changing masses during evaporation of organic liquids. Other properties of matter such as boiling point, Intermolecular Forces Lab This is a rotation lab. Figure 2.13 summarizes the trends for atomic size. Describe why you ranked them that way. Intermolecular strength refers to the force of attraction between atoms or molecules within a substance. intermolecular forces lab answers is welcoming in our digital library an online entry to it is set as public therefore you can download it instantly. As we can see, there are three lines, they represent the three intermolecular forces (Van der Waals, dipole-dipole, and hydrogen bonding) The one placed at the left is the Van der Waal is force, as we can see, it need very little temperature to break the intermolecular force, however, the one right at … 1. On … In order to have hydrogen bonding (thus more intermolecular forces) you need a hydrogen and one (or more) of these elements: 2. Lab 4: lipids intermolecular forces and solutions imf notes chemical polarity force chem 116 pogil week03 worksheet week 3 Procedure (2 pts): intermolecular forces evaporation and intermolecular attractions hypothesis: the two types of alkanes (pentane and hexane) will evaporate faster than the two. Physical properties of substances are understood in terms of kinetic-molecular theory. You will move from one station to another to do the different sections of the lab. Station #1 (Yellow station… List the three Intermolecular Forces and describe them (1 pt): 1. albr3 intermolecular forces, As a result, the positive force exerted by the nucleus pulls the outer electrons closer, reducing the atom’s total size. Intermolecular Forces: Evaporation and Intermolecular Attractions [class handout]; Department of Chemistry and Physics, Nova Southeastern University: Fort Lauderdale, FL, 2010. Make a table listing the names and chemical formulas of all chemicals used in this lab. If we are able to use the fluorescence spectra and absorption during denaturation, then we will be able to characterize the phycobiliproteins. Exploring Intermolecular Forces Lab Background: Intramolecular forces are forces acting on atoms within ionic crystals or molecules. Home Lab conducted on 3/29/19, drop 4 different substances onto the same penny to test cohesion properties. Intermolecular Forces Lab von Ms. Hinkson vor 3 Monaten 4 Minuten, 42 Sekunden 384 Aufrufe Grade 11 Intermolecular Forces Part 3 of 6 Grade 11 Intermolecular Forces Part 3 of 6 von LAB-M8 vor 7 Monaten 3 Minuten, 2 Sekunden 58 Aufrufe Grade 11 , IMF , Experiment , 2: Surface Tension. intermolecular forces 1-pentanol London dispersion forces and H-bonding pentane London dispersion forces 1-Pentanol should have larger intermolecular forces due to H-bonding, meaning the molecules are more attracted to each other than in pentane. Lab 4 Name_____ Intermolecular Forces Pre-Lab Assignment This written pre-lab is worth 3 points of your lab report grade and must be turned in to your lab instructor before class begins. Water (H20) Hexane (C6H14) Compound Observations Dissolved? If the first station is busy when you begin, feel free to start at a different station that is not occupied. 3 heating curve worksheet answers, phase change worksheet answer sheet and intermolecular forces worksheet answer key are three of main things we will show you based on the gallery title. For organic 2. Determine … Evaporation and intermolecular attractions lab answers. How to classify IFM, Activity. The ordering from lowest to highest boiling point is therefore C 2 H 6 < C 3 H 8 < C 4 H 10. It is NOT necessary to do the different sections in order. Activity C: Intermolecular forces Get the Gizmo ready: Select the INTERMOLECULAR FORCES tab. Introduction: The polarity of molecules give rise to the forces that act between them. You do NOT have to write a formal lab report. Sign in Register; Hide. To show the dramatic effects of hydrogen bonding, look at the normal boiling points of the following substances. Determine the Rf value for the Cl- ion in 80% acetone. Note: Dishwasher detergent is a surfactant. It would take more energy to Describe the types of intermolecular forces possible between atoms or molecules in condensed phases (dispersion forces, dipole-dipole attractions, and hydrogen bonding) ... the … Materials (1 pts): Write the materials used in this lab. Background Information: Attractions between molecules are called intermolecular forces. Download Save Intermolecular Forces Lab W2018 Which halide ions are […] Intermolecular Forces . Laboratory 20: Intermolecular Forces (IMF) Introduction In this lab we will study the Intermolecular Forces responsible for the attractive forces between molecules. 2. intermolecular forcesÑhydrogen bonding and dispersion forces. These are forces between molecules. 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