Surface Tension - ice.chem.wisc.edu
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Surface Tension NOTE Before using this collection of activities for the first time, please read About Super Science Connections for a discussion of teaching strategies, introductory activities, a full table of contents of all SSC activities, how to connect SSC with literature, mathematics, art, and much more. It is a very useful introduction. A Note about Safety Science Concepts and Benchmarks 119 Looking at Lather 121 The Milk Explosion 131 A Needle Floats 143 Freckle Face 145 Suppliers 146A Disclaimer . This publication is intended for use by teachers or other adults with properly supervised children. All adults and children are expected to follow normal safety precautions when performing the activities described in this manual (see A Note about Safety). Neither the authors nor the publisher assumes liability for the use of information in this publication. Copyright © 1994, 1995, 2012 by the University of Wisconsin Board of Regents ICE Publication 94-009 Creative Commons License Deed. Aribution-NonCommercial-ShareAlike 3.0 Unported [hp://creativecommons.org/ licenses/by-nc-sa/3.0/] A portion of this document is below; see complete deed online. You are free • to Share—to copy, distribute and transmit this work; • to Remix—to adapt this work. You may do so under the following conditions: Aribution—You must aribute the work in the manner specified by the author or licensor (but not in any way that suggests that they endorse you or your use of the work). Noncommercial—You may not use this work for commercial purposes. Share Alike—If you alter, transform, or build upon this work, you may dis- tribute the resulting work only under the same or similar license to this one. Permission to copy worksheets: You have our permission to make as many copies as are needed for students in your classes of any or all of the worksheets that accompany each activity. Printed copies of SSC are available for purchase from ICE, The Institute for Chemical Education (hp://ice.chem.wisc.edu/ Catalog/Manuals.html#Anchor-Super-25730); ICE publication 94-009. Super Science Connections © 1995, 2012 by Univ. of Wisconsin Board of Regents ICE, The Institute for Chemical Education
Transcript of Surface Tension - ice.chem.wisc.edu
Surface TensionNOTE Before using this collection of activities for the first time, please read About Super Science Connections for a discussion of teaching strategies, introductory activities, a full table of contents of all SSC activities, how to connect SSC with literature, mathematics, art, and much more. It is a very useful introduction.
A Note about SafetyScience Concepts and Benchmarks 119Looking at Lather 121The Milk Explosion 131A Needle Floats 143Freckle Face 145
Suppliers 146A
Disclaimer. This publication is intended for use by teachers or other adults with properly supervised children. All adults and children are expected to follow normal safety precautions when performing the activities described in this manual (see A Note about Safety). Neither the authors nor the publisher assumes liability for the use of information in this publication.
Copyright © 1994, 1995, 2012 by the University of Wisconsin Board of Regents ICE Publication 94-009
Creative Commons License Deed. Attribution-NonCommercial-ShareAlike 3.0 Unported [http://creativecommons.org/licenses/by-nc-sa/3.0/] A portion of this document is below; see complete deed online.
You are free • to Share—to copy, distribute and transmit this work; • to Remix—to adapt this work. You may do so under the following conditions: Attribution—You must attribute the work in the manner specified by the author or licensor (but not in any way that suggests that they endorse you or your use of the work). Noncommercial—You may not use this work for commercial purposes. Share Alike—If you alter, transform, or build upon this work, you may dis-tribute the resulting work only under the same or similar license to this one.
Permission to copy worksheets: You have our permission to make as many copies as are needed for students in your classes of any or all of the worksheets that accompany each activity.
Printed copies of SSC are available for purchase from ICE, The Institute for Chemical Education (http://ice.chem.wisc.edu/Catalog/Manuals.html#Anchor-Super-25730); ICE publication 94-009.
Super Science Connections © 1995, 2012 by Univ. of Wisconsin Board of Regents ICE, The Institute for Chemical Education
A Note about SafetyThe measure of appropriate safety precautions is what would a reasonable person have done in the situation. We have taken a cautious, conservative view of “reasonableness” in the activities in SSC. We have included only those chemicals and procedures that we do in our own classrooms with confidence that we are not risking the safety of any of the students. The proper safety action if something is splashed into the eye is to wash the eye out with water for five or ten minutes. We are not recommending safety glasses for all of the activities, unless local policies require it. While one of the experiments uses vinegar, no family requires its children to wear safety glasses while using Italian salad dressing! We have not included reactions with ammonia at this age level, however, because a reasonable person would not have a child of this age using ammonia.
There are two activities where we suggest eye protections. One is “Seltzer Surprise” where the top of a film canister pops off, and there is a chance that the top could hit a student directly in the eye, if the student did not follow the directions to stand back. Try this experiment yourself to get an idea of the force of the reaction. The other experi-ment where we suggest eye protection is “Fabulous Fancy Fabric”. This is because we are using plastic pipets that are similar to medicine droppers containing rubbing alcohol. These pipets are a great way to deliver small quantities of liquid to one spot. They can also be used as squirt guns, either accidentally or because one of your students just couldn’t resist the temptation!
You will want to check with your local school district about specific regulations. Some require safety glasses for any science work. There are usually two justifications of this. One is that the district is responding to any potential liability by exercising extreme caution. The other is that wearing safety glasses is a way to model behavior that highlights that safety is an important consideration in a laboratory situation. That is, it doesn’t matter what chemicals are being used, the goal is to reinforce that safety glasses should be worn in a science laboratory.
There are many sources of both safety glasses and safety goggles including Safety Glasses USA.com (www.safetyglassesusa.com), Enviro Safety Products (www.enviro-safetyproducts.com), Educational Innovations (www.teachersource.com), Delta (www.deltaeducation.com), and Science Bob Store (www.sciencebobstore.com).
Publications that are good references for safety at the elementary school level include:
• “Exploring Safely: A Guide for Elementary Teachers” by Terry Kwan and Juliana Texley; NSTA; available in print, as an e-book, or bundled (both print and e-book)
• “Safety in the Elementary (K–6) Science Classroom” 2nd edition, American Chemi-cal Society; PDF available online at http://portal.acs.org/portal/fileFetch/C/WPCP_012300/pdf/WPCP_012300.pdf
• “Science and Safety: It’s Elementary”, Council of State Science Supervisors; information is in the form of a calendar/poster; available online at http://www.csss-science.org/downloads/scisaf_cal.pdf
• “Safety in the Elementary Science Classroom”, NSTA; a flipchart/poster; available from NSTA or from amazon.comupdated 2/2012
Super Science Connections © 1995, 2012 by Univ. of Wisconsin Board of Regents ICE, The Institute for Chemical Education
this is a replacement page for FRONT and all 5 lessons
© 1995, 2012 by Univ. of Wisconsin Board of Regents
All of the activities in SSC are designed to follow general Benchmarks from “Bench-marks for Science Literacy”. Those listed below are from the 1993 version. Go to About Super Science Connections for a list of all those that apply with both 1993 and current (2009) versions listed.
updated 2/2012
Scientist’s explanations about what happens in the world come partly from what they observe, partly from what they think. Sometimes scientists have different explanations for the same set of observations. That usually leads to their making more observations to resolve the differences.
Chapter 1: The Nature of Science Section B: Scientific Inquiry Grades 3–5, page 11
Tools are used to do things better or more easily and to do some things that could not otherwise be done at all. In technology, tools are used to observe, measure, and make things.
Chapter 3: The Nature of Technology Section A: Technology and Science Grades K–2, page 44
Things can be done to materials to change some of their properties, but not all materials respond the same way to what is done to them.
Chapter 4: The Physical Setting Section D: Structure of Matter Grades K–2, page 76
© 1995, 2012 by Univ. of Wisconsin Board of Regents
© 1995, 2012 by Univ. of Wisconsin Board of Regents
© 1995, 2012 by Univ. of Wisconsin Board of Regents
© 1995, 2012 by Univ. of Wisconsin Board of Regents
© 1995, 2012 by Univ. of Wisconsin Board of Regents
© 1995, 2012 by Univ. of Wisconsin Board of Regents
© 1995, 2012 by Univ. of Wisconsin Board of Regents
© 1995, 2012 by Univ. of Wisconsin Board of Regents
© 1995, 2012 by Univ. of Wisconsin Board of Regents
© 1995, 2012 by Univ. of Wisconsin Board of Regents
© 1995, 2012 by Univ. of Wisconsin Board of Regents
© 1995, 2012 by Univ. of Wisconsin Board of Regents
© 1995, 2012 by Univ. of Wisconsin Board of Regents
© 1995, 2012 by Univ. of Wisconsin Board of Regents
© 1995, 2012 by Univ. of Wisconsin Board of Regents
© 1995, 2012 by Univ. of Wisconsin Board of Regents
© 1995, 2012 by Univ. of Wisconsin Board of Regents
© 1995, 2012 by Univ. of Wisconsin Board of Regents
© 1995, 2012 by Univ. of Wisconsin Board of Regents
© 1995, 2012 by Univ. of Wisconsin Board of Regents
© 1995, 2012 by Univ. of Wisconsin Board of Regents
© 1995, 2012 by Univ. of Wisconsin Board of Regents
© 1995, 2012 by Univ. of Wisconsin Board of Regents
© 1995, 2012 by Univ. of Wisconsin Board of Regents
© 1995, 2012 by Univ. of Wisconsin Board of Regents
© 1995, 2012 by Univ. of Wisconsin Board of Regents
The Institute for Chemical Education Super Science Connections 233
American Science & SurplusP.O. Box 1030Skokie, IL 60076phone: 888-724-7587email: [email protected]: www.sciplus.com
Biophilia, Randy KorbW6803 Manitowoc RoadMenasha, WI 54952phone: 920-734-6595
Clifford W. Estes Co., Inc.40 Vreeland AvenueTotowa, NJ 07512phone: 800-248-2271email: [email protected] (customer service)Internet: www.estesco.com
Delta Education, Catalog80 Northwest BoulevardNashua, NH 03061-3000phone: 800-258-1302Internet: www.deltaeducation.com
Edmund Scientific’s SCIENTIFICS60 Pearce AvenueTonawanda, NY 14150phone: 800-728-6999; 800-818-4955 (orders)email: [email protected]
Educational Innovations5 Francis J. Clarke CircleBethel, CT 06801phone: 888-912-7474; 203-229-0730Internet: www.teachersource.com
Flinn Scientific, Inc.P.O. Box 219Batavia, IL 60510phone: 800-452-1261email: [email protected]: www.flinnsci.com
SuppliersList of Suppliers for Materials Recommended updated 2/2012
Jamie Lazenby (cotton farmer)The LA-Z-BEE4184 Lee Road 146Auburn, AL 36830-8415phone: 334-749-5346
Micromole ScientificAttn. John Mauch1312 N. 15thPasco, WA 99301phone: 509-545-4904
Kathy and Robert Miller (owners of a cotton gin)2222 Lee RoadAuburn, AL 36830Contact between September and November
Museum Products Co.84 Route 27Mystic, CT 06355-1226phone: 800-395-5400; 860-536-6433www.tracksandscat.com
National Science Teachers Association (NSTA)1840 Wilson BoulevardArlington, VA 22201phone: 800-277-5300Internet: www.nsta.org/
Oriental Trading Co.P.O. Box 2308Omaha, NE 68103-2308phone: 800-348-6483Internet: www.orientaltrading.com
Rainbow Symphony, Inc. (3D glasses)6860 Canby Avenue, Suite 120Reseda, CA 91335phone: 800-821-5122; 818-708-8400email: [email protected]: www.rainbowsymphony.com
WREN Enterprises3145 West Monmouth AvenueEnglewood, CO 80110phone: 303-798-2778
© 1995, 2012 by University of Wisconsin Board of Regents
