When you mixed the
borax
and the glue, the chemical reaction formed long chain molecules called polymers. … When the bouncy ball
What type of polymer is a bouncy ball?
There are two polymers working together to make your bouncy ball bounce that high.
Polyvinyl acetate
, a strong and flexible polymer, is found in glue. Amylopectin, a “branched” polymer, is found in cornstarch. The polyvinyl acetate gives your ball strength while amylopectin gives your ball elasticity.
What is a polymer ball?
While balls have been used as toys forever, the bouncing ball is a more recent innovation. … The bouncing ball in this activity is made from a
polymer
. Polymers are molecules made up of repeating chemical units. Glue contains the polymer polyvinyl acetate (PVA), which cross-links to itself when reacted with borax.
How do you make a polymer bouncy ball?
Store-bought bouncy balls are made of rubber, another material that is made up of polymers. When the bouncy ball is stretched, these polymer chains uncoil and straighten. … When your ball bounces,
it is squishing
when it hits the ground, then un-squishing as it bounces back up.
How do polymer bouncy balls work?
Store-bought bouncy balls are made of rubber, another material that is made up of polymers. When the bouncy ball is stretched, these polymer chains uncoil and straighten. … When your ball bounces,
it is squishing
when it hits the ground, then un-squishing as it bounces back up.
Is rubber a polymer?
Natural rubber is
a polymer
, a long, chain like molecule that contains repeating subunits. The term polymer comes from the Greek “poly” meaning many and “mer” meaning parts. The chemical name for natural rubber is polyisoprene.
Are polymers?
polymer, any of a
class of natural or synthetic substances composed of very large molecules
, called macromolecules, that are multiples of simpler chemical units called monomers. Polymers make up many of the materials in living organisms, including, for example, proteins, cellulose, and nucleic acids.
Why are bouncy balls so bouncy?
Store-bought bouncy balls are made of
rubber
, another material that is made up of polymers. When the bouncy ball is stretched, these polymer chains uncoil and straighten. When released, the chains coil back up again. This makes the material stretchy and bouncy.
Why is PVA bouncy?
When the glue was added to the borax water, the glue became firm and bouncy. That’s because the
borax reacted with the glue causing the polymers
, or long chains of molecules, in the glue to stick together and form an elastomer.
Why does borax make bouncy balls?
Making a bouncy ball is an example of
a chemical reaction
. This reaction happens between the Borax and glue. The Borax is the cross-linker for the glue’s polymer molecules. This creates chains of molecules that stay together when your child plays with the ball.
What are clear bouncy balls made of?
Store-bought bouncy balls are made of
rubber
, another material that is made up of polymers. When the bouncy ball is stretched, these polymer chains uncoil and straighten.
What type of energy does a bouncy ball use?
When a bouncing ball falls, it initially gains speed or
kinetic energy
—the energy of motion. When it reaches Earth, it collides head-on with an incredibly massive object that is, from your perspective, at rest. The ball slows down, deforms temporarily and shoots back up.
What can you use instead of borax to make a bouncy ball?
Most bouncy balls are made with Borax, but it is dangerous to ingest and can irritate your skin. To make a bouncy ball without using Borax, you can use
baking soda, glue, water, and food coloring or cornstarch, water, and food coloring
.
Is protein a natural polymer?
Natural polymers occur in nature
and can be extracted. They are often water-based. Examples of naturally occurring polymers are silk, wool, DNA, cellulose and proteins.
Is PVC a natural polymer?
PVC, also known as polyvinyl chloride is a synthetic plastic polymer. …
Proteins are the natural polymers
. Proteins are made out of amino acids hence proteins are polyamides so we can say that proteins are obtained from the plants and animals directly.
Is cotton a polymer?
Cotton fibers are the
purest form of cellulose
, nature’s most abundant polymer. Nearly 90% of the cotton fibers are cellulose. All plants consist of cellulose, but to varying extents.
