Polymer Lab
Question: What will happen if we mix borax, water, and glue?
Hypothesis: I think that they will all combined to create a bouncy ball, or slime like substance.
This picture was taken just after we added everything together to form the picture. As shown, the mixture was quite slimy at this point, and it would stick to your fingers if you touched it. Over time, it began to lose moisture, and it became something similar to play-doh, or clay. In comparison:
Before we added the borax to the glue:
The glue was slimy and and wet.
After we added the borax to the glue:
The glue became hard, and seemed to absorb the borax and water.
Slime Tests
Slime rating: 1 out of 5. Our slime was very slimey at first, but then became less slimey as the time wore on.
Slow poke test: If you shape the slime in a ball, and slowly stick your finger through it, your finger will come out the other end.
Quick poke test: If you shape the slime in a ball, and quickly stick your finger through it, your finger will come out on the other end.
Slow pull test: If you slowly pull the slime apart, the slime forms holes.
Quick pull test: If you quickly pull the slime apart, it will break into 2 pieces.
Blob test: When you roll the slime into a ball, than let it flatten out, it takes about a minute and a half flatten.
Bounce test: If you drop the ball from 30cm above a table, onto a table, it will bounce up roughly a foot and a half.
Questions:
1. How is slime viso-elastic?
It tries to go back to it’s original shape
2. What are the physical properties that change as a result of the addition of sodium borate to elmers glue?
It becomes elastic, regains its shape, bounces, and is much less sticky than plain glue.
3. What would be the effect of adding more sodium borate to your cup?
More sodium borate would have made the slime more compact.
4. How does water affect elasticity of the palmer?
The moisture allows it to be elastic. Elasticity is the object allowing it’s self to be pulled apart.
5. The repeating molecule is
H H
| |
C C
| |
OH H
6 The structural formula of the poly(vinvyl alcohol) monomer circled above ^
C2H3OH
7. Circle the borax cross-linking agent?
The borax cross-linking agent is the B in the center of the two pictures.
When borax solution is added to glue, a certain polymer is formed. That happens when we take multiple monomers, and chemically create a monomer. I would overall, accept my hypothestis, which stated that by adding glue, water and borax, we will create a polymer. If I was to change this test in any way, we should attempt adding more borax, to see if that changes the bonding in any way. We could also try this with adding more water, or glue. Our tests were carried out flawlessly, and our slime was a prime example of what the test should have turned out to be. It was crucial for us that we carry out the test correctly this time, however, A small mistake could have made a big difference.
Question: What will happen if we mix borax, water, and glue?
Hypothesis: I think that they will all combined to create a bouncy ball, or slime like substance.
This picture was taken just after we added everything together to form the picture. As shown, the mixture was quite slimy at this point, and it would stick to your fingers if you touched it. Over time, it began to lose moisture, and it became something similar to play-doh, or clay. In comparison:
Before we added the borax to the glue:
The glue was slimy and and wet.
After we added the borax to the glue:
The glue became hard, and seemed to absorb the borax and water.
Slime Tests
Slime rating: 1 out of 5. Our slime was very slimey at first, but then became less slimey as the time wore on.
Slow poke test: If you shape the slime in a ball, and slowly stick your finger through it, your finger will come out the other end.
Quick poke test: If you shape the slime in a ball, and quickly stick your finger through it, your finger will come out on the other end.
Slow pull test: If you slowly pull the slime apart, the slime forms holes.
Quick pull test: If you quickly pull the slime apart, it will break into 2 pieces.
Blob test: When you roll the slime into a ball, than let it flatten out, it takes about a minute and a half flatten.
Bounce test: If you drop the ball from 30cm above a table, onto a table, it will bounce up roughly a foot and a half.
Questions:
1. How is slime viso-elastic?
It tries to go back to it’s original shape
2. What are the physical properties that change as a result of the addition of sodium borate to elmers glue?
It becomes elastic, regains its shape, bounces, and is much less sticky than plain glue.
3. What would be the effect of adding more sodium borate to your cup?
More sodium borate would have made the slime more compact.
4. How does water affect elasticity of the palmer?
The moisture allows it to be elastic. Elasticity is the object allowing it’s self to be pulled apart.
5. The repeating molecule is
H H
| |
C C
| |
OH H
6 The structural formula of the poly(vinvyl alcohol) monomer circled above ^
C2H3OH
7. Circle the borax cross-linking agent?
The borax cross-linking agent is the B in the center of the two pictures.
When borax solution is added to glue, a certain polymer is formed. That happens when we take multiple monomers, and chemically create a monomer. I would overall, accept my hypothestis, which stated that by adding glue, water and borax, we will create a polymer. If I was to change this test in any way, we should attempt adding more borax, to see if that changes the bonding in any way. We could also try this with adding more water, or glue. Our tests were carried out flawlessly, and our slime was a prime example of what the test should have turned out to be. It was crucial for us that we carry out the test correctly this time, however, A small mistake could have made a big difference.
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