Category Archives: Science

Status

Polymer Project – Journal #4

Our video:

Prototype #1

Pros

  • Malleable
  • Freezable
  • Soft
  • Fun to play with

Cons

  • Slimy
  • Too small amount

Prototype #2

Pros

  • Big enough amount
  • Soft
  • Playable
  • Malleable
  • Freezable
  • Not slimy
  • Perfect!

Cons

  • No noticeable cons.

Recommendation for future improvements:

I think that we would make it so that we don’t have to put the slime into a bag because if it wasn’t in a bag, it would be more fun to play with. Also, I think we should come up with a polymer that can be played with, constant in temperature, but also be freezer friendly. Right now, you can only put Man’s Not Hot cooling pack in the fridge, and fridges can get packed sometimes, so if we made it usable for both environments, then it would be more, effective. I think that other than that, our polymer is pretty good.

Claim:

Our last prototype was the most effective.

Evidence: 

Our last prototype was the most effective because it was a large amount, malleable, soft, freezable, not slimy, and fun to play with. So it filled all of our criteria!

To create Man’s Not Hot cooling pack: 

60 ml of PVA

20 mL of Borax

Stir until sides are sticky

(If you want color in it, add food coloring)

Reflection: 

Through the design process, my partner Emily, and I were able to create the (revolutionary) Man’s Not Hot cooling pack. We were able to develop who we wanted as our audience and what we wanted our polymer to do. We planned what we wanted to do, and how to make it. Then we created our polymer and improved the recipe along the way. We were able to define what and how our polymer was making an impact, as a new kind of fever pack. Then in the end, after we had created everything, we were able to look back upon our hard work and see our progress. I think that our polymer (if good enough) could create a real-world impact, and could be shared all over the world! Well, that’s being very confident about it, but I think that Emily and I were able to create a pretty good polymer, and did well developing, creating, and “selling” it.

Status

Polymer Project – Journal #3

Slime Tests:

Measurements:

60 mL of PVA

16 mL of Borax

Stir until the sides are sticky

MAKES RED SLIME

40 mL of PVA

8 mL of Borax

Stir until the sides are sticky

MAKES BLUE SLIME

Freeze slime -> still moldable!

BLUE SLIME – COLD

COLD TEST: 

Test coolness after being taken from the fridge.

Warmth – put on a warm shoulder to test how long that warmth is maintained and how coolness is transferred as well as how it feels.

The more slime we made, we found the longer we could freeze. But we also found that you can’t put the slime in the freezer, as it won’t be mouldable. But if put in the fridge, then the slime can still have the mouldable qualities we want, but also maintain a cold temperature.

Left: 20 mL of PVA

Right: 40 mL of PVA

BOUNCE TEST:

Test #1 – When dropped from 30 cm, before the slime was put in the fridge, the slime bounced 3.5cm.

Test #2 – When dropped from 30 cm, after being in the fridge for 5 minutes, it barely bounced.

SHAPE TEST:

Test #1 – With the right amount of borax, the slime would hold it’s place for quite a bit. But after a few minutes, it started to droop.

Test #2 – After taking it from the fridge, no matter how long we kept it out, it maintained it’s shape.

STICK TEST:

Test #1 – The slime was not sticky, and would break easily.

Test #2 – After putting it in the fridge, it would break even more, and no shapes could be made in either of these tests.

PROTOTYPE #1:

Slimy and the amount we made was too small, but it was malleable and soft.

PROTOTYPE #2:

We made more slime this time, and it was malleable and soft.

FINAL PROTOTYPE: 

The perfect fit for everything!

 

Status

Polymer Project – Journal #2

Our Goal:

The goal of our polymer project is to …

Create a polymer that can be used for medical purposes.

Target Market Audience

Describing Our Polymer

We want the Physical Properties to include:

  • Cold
  • Moldable
  • Soft/Gel that doesn’t stick, not slimy
  • Reusable

Polymer Characteristics We Are Looking For

Our Plan to Develop our Prototype

*Prototype = sample or model

Our Method for Testing our Prototype: How we’ll test it to see if it works

Status

Polymer Project – Journal #1

What are synthetic materials?

Man-made materials that are derived from natural resources. i.e. Steel and Sugar

 

What are natural resources? 

Is a source that is found in nature that is used by man. i.e. Forest and Water

What is a polymer?

 

A long chain of molecules called monomers

 

Give 2 examples of synthetic polymers and the natural resources they come from

Synthetic Polymer #1

Plastic

What natural resources does this come from?

Chemicals that comes from natural gas, carbon, other oils and other natural polymers

What would we use this synthetic material for?

Cups, eating utensils, furniture, toys

Synthetic Polymer #2

Silicone

What natural resources does this come from?

Siloxane, made from oxygen and silicon

What would we use this synthetic material for?

Computer chips

Chemical Reactions: 

How do natural resources go through a chemical reaction to become synthetic materials? *important words to think about…polymerization, monomer, polymer

When natural monomers link up through the process of polymerization, they become a polymer. If said polymer happens to not be found in nature, then it is a synthetic polymer.

What is a monomer?

A molecule that joins up with similar molecules to form a polymer.

What is polymerization?

The cause to combine molecules to form a polymer.

 

Resources: 

https://www.merriam-webster.com/dictionary/synthetic%20fiber
http://www.middleschoolchemistry.com/lessonplans/chapter6/lesson12
https://www.google.com.hk/search?q=what+are+natural+resources&oq=what+are+nat&aqs=chrome.1.69i57j0l5.10958j1j7&sourceid=chrome&ie=UTF-8
http://www.eschooltoday.com/natural-resources/what-is-a-natural-resource.html
Apple Dictionary
Miguel Abando