MERLOT Search - category=2629&anyKeyWords=false&community=3017&materialType=Collection&contributorName= A search of MERLOT materials Copyright 1997-2015 MERLOT. All rights reserved. Tue, 5 May 2015 01:42:50 PDT Tue, 5 May 2015 01:42:50 PDT MERLOT Search - category=2629&anyKeyWords=false&community=3017&materialType=Collection&contributorName= 44 34 ChemMovies - and more This website contains a collection of excellent chemistry demonstrations that include overal descriptions of the experiment being demonstrated, the chemical concepts being reviewed, safety issues, the step-by-step procedures, questions to ask, a handoout that can be used for student makeups, and excellent movies that show what what happens in the experiment.The materials were developed in conjunction with Robert Becker of Kirkwood High School in Kirkwood, MO. The demonstrations and laboratories are those selected and used by Bob in his classroom. Many of the demonstrations may be assembled in a short time with a limited number of solutions to illustrate a specific point. Some demonstration activities are designated as suitable for either demonstrations or laboratories. If time is short, do a short demonstration with many presentation questions. Alphabetical Listing of Elements of the Periodic Table This site gives pictures, history of the discoveries, and common usages of the Elements of the Periodic Table in an alphabetical listing. An Introduction to Chemistry A complete online preparatory chemistry text, including Acrobat files for two versions of the text, traditional PowerPoint presentations, an audio version of the text presented in PowerPoint-like Flash files, animations, tutorials, chapter maps, chapter checklists, glossary quizzes, Jmol structures, and more. Atoms Family from A Link to one of the GREATEST lessons on Atoms!What will you get?1. A really good power point.2. A student worksheet that follows the power point.3. A Follow-up activity/assement. Awesome Science Teacher Resources This site is designed to provide high school and middle school science teachers access to the materials and resources that the author has collected during their 37 years of teaching in the field. Some of the materials are of the author's own design, but many are those they have borrowed from others and refined for their own use. They include:- Activities and worksheets- Laboratory exercises- Links to useful pages- Puzzles, games, and songs- Online test reviews by topic Chemical Excelets: Interactive Excel Spreadsheets for General Chemistry This is a collection of over fifty interactive Excel Spreadsheets (aka - simulations) or Excelets for discovery learning in general chemistry. The Excelets range from simple calculation aids to exploring concepts by bringing the mathematics alive. Topics covered include the bond energy calculator, temperature scales, ideal gas law, interactive periodic trends, Beer&rsquo;s Law, kinetics including competing/consecutive reactions and radioactive decay, weak acid behavior, buffers, weak acid distribution diagrams, and potential energy diagrams plus the influence of random and/or systematic error in many of the topics. Guided-inquiry activities are included with many of the spreadsheets. A link to a &quot;How to&quot; guide for developing Excelets is provided. Didáctica de la Química y Vida Cotidiana El sitio parte de un Proyecto Global sobre enseñanza y aprendizaje de la Química, apoyado por distintas instituciones.Fomentan el aprendizaje con analogías y ejemplos de la vida cotidiana. Se promueven así enfoques educativos del tipo Ciencia-Tecnología-Sociedad (CTS) y de Aprendizaje Basado en Problemas (ABP).MATERIALES: •Libros editados como parte del proyecto global de “Didáctica de la Química”.•Ejercicios y problemas en los que se obtienen valores relacionados con algún aspecto de la Química, a partir de objetos o hechos cotidianos. Están especialmente indicados para promover el aprendizaje basado en problemas.•Imágenes.•Analogías que pueden facilitar la comprensión de conceptos químicos.•Experimentos.•Etimología de conceptos.•Divulgación de la Química.•Jornadas•Enlaces Learning Chemistry Easily Learning Chemistry Easily is a blog which provides Lessons on Chemical Reactions, Properties, Characteristics, Types, and Composition of Matter. Detailed Explanations and Examples of the Metric System, Dimensional Unit Analysis, Significant Figures, and Scientific Notation are Included. Mole - Mass Conversions and Molarity Calculations are Covered. Atomic Theory, Electron Configurations, Emission Spectra, and Chemical Bonding are Presented. Custom Illustrations and charts throughout. Library of 3-D Molecular Structures A library of three dimensional molecular structures. Structures available in GIF, VRML and PDB formats. Contains structures of water (and ice), carbon allotropes, hydrocarbons, amino acids, nucleotides, lipids, sugars and molecules involved in photosynthesis. Drugs Tie-Dyed Milk (Surfactant Lab) This lab shows how soap responds to lipids (such as the ones found in milk). It is a great way to introduce students to lipids, polar vs. nonpolar substances, and micelles which can lead to an explanation for the phospholipid bilayer of a cellular membrane.This lab is quick and easy and the kids love it! Great for all ages, because it is easily adaptable to any grade.Here's my lesson plan I wrote up:Standard 1.h. Students know most macromolecules (polysaccharides, nucleic acids, proteins, lipids) in cells and organisms are synthesized from a small collection of simple precursors.Standard 1.a. Students know cells are enclosed within semi permeable membranes that regulate their interaction with their surroundings.Time:Discussion about soap and lipids (10-15 minutes)Laboratory (10-15 minutes)Cleanup (5-10 minutes)(Extended discussion time: 10-20 minute)Materials:Whole milkPetri dishesToothpicksDawn detergentSmall beakersFood dye (different colors)Background knowledge:Students should already have a general understanding of what makes up lipids, proteins, carbohydrates, and nucleic acids. A short lecture will proceed the lab. In this lecture, students will learn about how soap detergent works and the difference between nonpolar lipids and polar molecules such as water. They will also learn how soap molecules have a polar end and a nonpolar end which allow them to form micelles around oil and other fats. This will lead them to an understanding of how a cellular membrane forms. Procedure:1)Arrange tables so that four/five students can fit per group. Each table will have 2 petri dishes, one small beaker with Dawn detergent, and 4-5 toothpicks.2)Fill each petri dish with milk just enough so it coats the bottom of the petri dish. 3)Have students drop one drop of different colors around the inside perimeter of the petri dish (directly on the milk).4)When everyone has dye in their milk (be careful not to agitate the petri dish so it doesnt start mixing), allow students to dip the toothpicks in the soap and then just touch the soap into the milk, or directly into a drop of dye in the milk. They should hold it there and observe what happens.Extended:I ran this lab on a minimum day schedule so I did not have the students answer any questions related to it; however, it really works itself well to discussing nonpolar vs. polar substances and eventually how a phospholipid bilayer forms.