Homemade Bouncy

download Homemade Bouncy

of 40

  • date post

  • Category


  • view

  • download


Embed Size (px)

Transcript of Homemade Bouncy

  • 7/27/2019 Homemade Bouncy Polymer.pdf



    An Entry for the2009 DIVISION SCIENCE FAIR




    Grade V E. AguinaldoResearchers

    Mr. MARK ANTHONY R. CUAResearch AdviserMarcela Marcelo Elementary School

    Pasay City

    October 2009

  • 7/27/2019 Homemade Bouncy Polymer.pdf





    One might think that chemists are a bunch of boring scientists who wear lab

    coats and look at beakers all day, but did you know that many toys you play with are

    made using chemistry? Some of your favorite toys like Gak, Slime and Silly Putty

    started out as chemistry experiments. In fact, some of your favorite toys may have

    been invented by chemists who work for toy companies like: Crayola, Play-Doh or


    Chemistry is the study of matter, and how different elements of matter

    interact. There are many different kids of matter, which need to be described using

    the concept of properties. Toys like silly putty are unique because of they have

    distinct properties that are different from the properties of other types of matter.

    There are two different kinds of properties, chemical properties and physical


    Chemical properties are qualities that can be observed during a chemical

    reaction, like when vinegar reacts with baking soda. Physical properties are qualities

    that can be observed during physical change in the absence of a chemical reaction,

    like the melting of an ice cube. Physical properties can be used to describe the state

    of a chemical, which can be a solid, liquid or a gas. The physical and chemical

    properties of Silly Putty are what make it so much fun because it is a polymer that is

    stretchy and bouncy!

    Scientists use properties to describe all of the unique qualities of a chemical

    or a mixture of chemicals. To do this they use descriptive language, or words that

    are used to describe objects. Some descriptive words used to describe a chemical

    might be: hot, cold, squishy, hard, soft, crystalline, granular, smooth, liquid, clear,

  • 7/27/2019 Homemade Bouncy Polymer.pdf



    opaque, and runny. There are many different qualities to be described. You just need

    to find the right words to use.

    The unique physical and chemical properties of a polymer or mixture can be

    changed by the amount of each different ingredient used to make them. Sometimes

    the amount of one ingredient compared to the amount of another ingredient can

    make a big difference. This is called a ratio, and a ratio can be useful to know how

    much of each ingredient to add to your mixture so you will end up with a mixture that

    has desirable properties.


    Balls have been toys practically forever, but the bouncing ball is a more recent

    innovation. Bouncing balls were originally made from natural rubber, though now

    bouncing balls can be made of plastics and other polymers.

    In this researcher, the bouncing ball is made from a polymer. Polymers are

    molecules made up of repeating chemical units.

    The researchers will change the ratio of two basic ingredients in homemade

    Silly Putty. They will describe the physical properties of each different mixture using

    a data table. Then they will choose the ratio of ingredients to create the best putty


    The use of bouncing polymer in science education provides number of

    advantages. One can use it to describe the chemical and physical properties of the

    mixtures. It can also be used to describe potential and kinetic energy. It can also

    demonstrate the Law of Conservation of Energy and Newtons Third Law of Motion

    for every action there is an equal and opposite reaction.

    The researcher would like to find out which is the best ratio of the two basic

    ingredients in homemade Silly Putty that would produce better and higher bounce.

  • 7/27/2019 Homemade Bouncy Polymer.pdf




    The main purpose of this research project is to come up with the best silly

    putty product. Specifically, it attempts to answer the following objectives:

    1. To evaluate the physical properties of the polymer balls;

    2. To describe the product of the different ratio of ingredients; and

    3. To determine the height of the bounce of the polymer balls.


    The main problem of the study is coming up with the best silly putty product

    based on various ratios of ingredients. Specifically, the study will seek to answer the

    following questions:

    1. Would it be possible to make a homemade bouncy polymer from a simple

    polymer found in white PVA glue and corn starch?

    2. Which of the following ratio will produce the best homemade bouncy polymer?

    3. What would be the effect of the varying ratio of the ingredients on the physical

    characteristics of the homemade bouncy polymer?


    Science is fun. It cannot only be learned in the four corners of the classroom

    but rather it can also be learned at home.

    Chemistry can be a very intimidating subject that is hard for some students to

    understand. This project study would like to help demonstrate some basic principles

    of chemistry. Specifically, this project study will help students understand that there

    is a difference between a physical change and a chemical change.

    Silly putty, as well as bouncing polymer is fascinating and educational. It can

    teach everyone about Chemistry, Physics and Mathematics.

  • 7/27/2019 Homemade Bouncy Polymer.pdf



    Results of the study would provide the pupils an opportunity to learn while

    having fun. Likewise, this study will provide opportunity to parents to have some

    quality time with their children.

    The result and findings of this study would give educators an alternative way

    of learning outside the classrooms. It would also encourage them to use other

    sources which are readily around them in teaching Science.


    The project study initiated after the researcher became interested and

    amazed about silly putty. The researcher made some readings and found that there

    silly putty can be possible made using readily available materials at home. There

    were also some studies and experiments where polymers are used as subject

    matter. With the help and guidance of the science teachers, the researcher came up

    with this project study.

    The researcher will try out various ratios using Elmers white glue, Borax,

    water, corn starch.

    They also used Zip-lock baggie, some bottles, weighing scale and graduated


    The homemade bouncy polymers were evaluated in two ways: quantitatively,

    through the mass, volume, density, height of bounce/return, length of stretch and

    distance of roll, and qualitativelythrough the descriptive analysis of some observable

    characteristics of the homemade bouncy polymers.

    Findings of this study will be applicable only to the ratios of the materials used

    and the field of study that will be tested and may not be generalized with others.

  • 7/27/2019 Homemade Bouncy Polymer.pdf





    This chapter reviews literature and studies related to the present project

    study. It presents literature on chemical properties, physical properties, polymers,

    and silly putty.


    Silly Putty, one of the most popular toys of the 20th century, was invented

    accidentally. Find out what a war, an indebted advertising consultant, and a ball of

    goo have in common.

    One of the most important resources needed for World War II war production

    was rubber. It was essential for tires (which kept the trucks moving) and boots (which

    kept the soldiers moving). It was also important for gas masks, life rafts, and even

    bombers. Beginning early in the war, the Japanese attacked many of the rubber-

    producing countries in Asia, drastically affecting the supply route. To conserve

    rubber, civilians in the United States were asked to donate old rubber tires, rubber

    raincoats, rubber boots, and anything else that consisted at least in part of rubber.

    Rations were placed even on gasoline to hinder people from driving their cars.

    Propaganda posters instructed people in the importance of carpooling and showed

    them how to care for their household rubber products so they would last the duration

    of the war.

    Even with this home front effort, the rubber shortage threatened war

    production. The government decided to ask U.S. companies to invent a synthetic

    rubber that had similar properties but that could be made with non-restricted

    ingredients. In 1943, engineer James Wright was attempting to discover a synthetic

  • 7/27/2019 Homemade Bouncy Polymer.pdf



    rubber while working in General Electric's laboratory in New Haven, Conn. when he

    discovered something unusual. In a test tube, Wright had combined boric acid and

    silicone oil, producing an interesting gob of goo.

    Wright conducted a multitude of tests on the substance and discovered it

    could bounce when dropped, stretch farther than regular rubber, didn't collect mold,

    and had a very high melting temperature. Unfortunately, though