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Brand of Crayon vs. Heat

This is what I did for my Project Based Assesment Test
by

Kaela Welch

on 16 April 2014

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Transcript of Brand of Crayon vs. Heat

Brand of Crayon vs. Heat
Question
Does the brand of crayon effect the amount of wax that is produced when heat is applied?
Hypothesis
I think that the brand does effect the amount of wax produced. Crayola will produce less wax and Imagine will produce the most wax.
Research
Crayons are made mostly for entertainment purposes. Not many people know how or what crayons are made from. Well, all crayons are made of 2 main substances, which would be pigment and paraffin wax. Paraffin wax is a white or colorless soft solid that is a mixture of petroleum and hydrocarbon atoms. Now the pigment is used to color the paraffin wax. Pigment comes in many different colors which is how we get the multiple colors of crayons. These two ingredients are held in a heat chamber so that the pigment will mix into the wax once it melts. The heat chamber’s temperature varies between 100 to 135 degrees Fahrenheit. It is heated to this temperature because almost all crayons melting point are 105 to 135 degrees Fahrenheit. For those of you who don’t know a melting point is when a solid changes its state to form a liquid. When the wax and the pigment are mixed well enough, they pour the melted wax into preset molds and set aside in an ice bath to speed up the cooling process so they can be labeled, packed, and shipped out as soon as possible.
Materials
Materials:
1. 3 different brands of crayons
Crayola
Cra-z-Art
Imagine
2. Hairdryer
3. Glue
Preferably the squeeze kind
4. 2 Pieces of cardboard
I had a tri-fold and a piece the width of the tri-fold
5. Ruler
6. String
7. Scissors
8. Tape

Steps
1. Collect all of your materials
2. Sort out three crayons from each brand(try to match the colors)
3. Take your large piece of cardboard and lay it out flat
4. Take the same one color crayon from each brand
5. Measure 2 inches from the top left corner of your large piece of cardboard
6. Take the paper off of the three crayons
7. Glue down the first crayon from the first brand (Crayola)
8. Measure 3 inches from the first crayon
9. Repeat steps 6-8 with the other crayons for the first trial
10. Measure 10 inches from the third crayon
11. Then repeat steps 6-10 for the other 2 trials
12. Take the larger piece of cardboard and set it up at an angle
13. Place the smaller piece of cardboard underneath the bottom of the larger piece (make sure there is about 5-6 inches in front)
14. Plug in the hairdryer
15. Turn it on high
16. Let it heat up for 5-10 seconds
17. Hold the hairdryer 2 inches away from the crayons
18. Hold the hairdryer there for 1 minute and 30 sec.
19. Turn off the hairdryer
20. Repeat steps 15-19 for the other two trials
21. Record your data

I.V, D.V. Constants and controls
Independent Variable:
My independent variable is the brand of crayons
Dependent Variable:
My dependent variable is the amount of wax produced
Constants:
My controls are the type of heat and cardboard
Controls:
My controls are Cra-z-Art, Crayola, and Imagine brand crayons

Data
Question, Research and Hypothesis
Data, Analysis,and Conclusion
Experiment
Analysis
My chart states that in the first test I conducted after holding the hair dryer on high above the Crayola brand for 1 minutes and 30 seconds caused the first crayon (of this brand) to melt 1 ¼ inches of wax. It also states that holding the hair dryer on high above the iMagine brand for 1 minute and 30 seconds cause the first crayon (of this brand) to melt 15 ½ inches. For the Cra-z-Art brand it stated that due to holding the hair dryer on high above for 1 minute and 30 seconds on the first crayon (of this brand) caused the crayon to melt 4 inches.
In the second test after holding the hairdryer on high above the Crayola brand for 1 minutes and 30 seconds caused the second crayon (of this brand) to melt 9 inches of wax but, after holding the hair dryer on high above the iMagine brand for 1 minute and 30 seconds it caused the second crayon (of this brand) to melt 13 ½ inches. For the Cra-z-Art brand holding the hair dryer on high above for 1 minute and 30 seconds on the second crayon (of this brand) caused the crayon to melt 7 inches.
After my third and final test the hairdryer on high above each crayon for 1 minute and 30 seconds the Crayola crayon melted 9 inches of wax, the iMagine melted 11 inches of wax, and the Cra-z-Art crayon melted 3 inches. Now for my average (an average is when you add up all of your number and then you divide it by all the numbers you have and I did that with each trial)

Conclusion
My conclusion is that my hypothesis was wrong. I said that the Crayola brand would produce less wax because it is “the best crayon” and iMagine would produce the most amount of wax because it was really hard to find an information on imagine crayons, it was a more generic and cheaper brand and they can be found in Dollar Stores. Cra-z-Art you see some commercials and it is a little easier to find information for Cra-z-Art than iMagine. My hypothesis was wrong because I stated that Crayola would produce the least amount of wax, but it produced the second most amount of wax. Cra-z-Art in fact produced the least amount of wax and iMagine produce the largest amount of wax. So my hypothesis was wrong. I guess Cra-z-Art is the winner.
Sources
http://www.madehow.com/Volume-2/Crayon.html

http://humantouchofchemistry.com/know-how-crayons-made-their-debut.htm

http://science.howstuffworks.com/innovation/science-questions/question563.htm




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