Sticky+Penny+Lab

 __Sticky Penny Lab__ (100)

Our group: Cisneros, Head, Bubak, Taylor, Welch

   1. (Taylor) Problem-How many drops of water will a penny hold?  2. (Welch) Hypothesis- I think the penny will hold 30 drops.  3. (Head) Testing/ Experimentation- >         >   >    >    4 <span style="color: rgb(217, 13, 13);">. Observations: (Bubak)  <span style="color: rgb(217, 13, 13);"> Obsv: 2= Here are our materials <span style="color: rgb(217, 13, 13);"><span style="font-family: Georgia,serif;">
 * <span style="color: rgb(249, 112, 6);"><span style="font-family: Georgia,serif;"> Materials- 2- 100 mL beakers, H 2 O, CH 3 -(CH 2 )n, pennies, medicine dropper, safety goggles, C 16 H 8 N 2 Na 2 O 8 S 2, paper towels and graduated cylinder.<span style="font-family: Georgia,serif;">
 * <span style="color: rgb(249, 112, 6);"><span style="font-family: Georgia,serif;"> Procedures- Step 1- Lab Safety Equipment (Goggles)
 * <span style="color: rgb(249, 112, 6);"><span style="font-family: Georgia,serif;"> Step 2- Gather Materials:   <span style="font-family: Georgia,serif;">  (2- 100 mL beakers, H 2 O, CH 3 -(CH 2 )n, pennies, medicine dropper, safety goggles, C 16 H 8 N 2 Na 2 O 8 S 2, paper towels and graduated cylinder)   <span style="font-family: Georgia,serif;">
 * <span style="color: rgb(249, 112, 6);"><span style="font-family: Georgia,serif;"> Step 3- Clean Equipment
 * <span style="color: rgb(249, 112, 6);"><span style="font-family: Georgia,serif;"> Step 4- Read Directions and Develop Plan for Testing
 * <span style="color: rgb(249, 112, 6);"><span style="font-family: Georgia,serif;"> Step 5- Find chemical formula names for solution
 * <span style="color: rgb(249, 112, 6);"><span style="font-family: Georgia,serif;"> Step 6-Measure 25 mL of soap by pouring into 100 mL beaker
 * <span style="color: rgb(249, 112, 6);"><span style="font-family: Georgia,serif;"> Step 7-Take medicine dropper and acquire solution.
 * <span style="color: rgb(249, 112, 6);"><span style="font-family: Georgia,serif;"> Step 8-Place flat on desk or flat surface and soap solution one drop at a time
 * <span style="color: rgb(249, 112, 6);"><span style="font-family: Georgia,serif;"> Step 9-Redo step 6 through 8 using the opposite side of the penny or the same side.
 * <span style="color: rgb(249, 112, 6);"><span style="font-family: Georgia,serif;"> Step 10- Second trial.
 * <span style="color: rgb(249, 112, 6);"><span style="font-family: Georgia,serif;"> Step 11- Third trial
 * <span style="color: rgb(249, 112, 6);"><span style="font-family: Georgia,serif;"> Step 12- Fourth Trial.
 * <span style="font-family: Georgia,serif;"> <span style="color: rgb(249, 112, 6);">Step 13- Fifth trial.

Obsv: 6= The liquid that is being put into the beaker was colorless, and bubbles appeared at the top. We figured out that the liquid being put into the graduated cylinder was soap. Then Mason poured the soap into the beaker from the graduated cylinder. <span style="color: rgb(217, 13, 13);"><span style="font-family: Georgia,serif;"> <span style="color: rgb(217, 13, 13);"><span style="font-family: Georgia,serif;"> Obsv: 7= Mason is sucking the soap into the medicine dropper. He had to do it nice and slow so no air bubbles got into the medicine dropper. The liquid flowed smoothly. <span style="color: rgb(217, 13, 13);"><span style="font-family: Georgia,serif;"> Obsv: 8=Our group thinks that we should drop the soap onto the penny, tails side up. We put the penny on our paper towel. We are starting with a brand new, shiny penny. Mason’s hand is shaking but it does not appear it is affecting it. The water forms together in one big drop. We got 23 drops on the brand new shiny penny. We put the dropper about 1 inch above the penny.

Obsv: (9) and 10- We are now trying to do a dirty penny. Jesse is putting the dropper close to the edge of the penny and it seems to work better. And also, Jesse is not shaking his hand while holding the dropper. We also think that this may play a role in getting more drops on the penny. We got thirty-five drops on the dirty penny. It appears that if you put the dropper closer to the penny because it does not splash the soapy water. This penny was also heads side up. <span style="color: rgb(217, 13, 13);"><span style="font-family: Georgia,serif;"> <span style="color: rgb(217, 13, 13);"><span style="font-family: Georgia,serif;"> Obsv: 10= We put the liquid into the cylinder, it appears to be Acid Blue 74 (blue food coloring). The food coloring also goes well in the dropper. Just like the soap did. <span style="color: rgb(217, 13, 13);"><span style="font-family: Georgia,serif;"> Obsv:11=We're dropping the liquid onto the tails side of the penny. Jesse said it seems kind of sticky. He is holding the dropper almost on the penny again. The liquid is piling up on the penny. And all the liquid was going towards the dropper. [Towards the left side] This penny was shiny. We got 33 drops on this penny. <span style="color: rgb(217, 13, 13);"><span style="font-family: Georgia,serif;"> Obsv: 12= The penny that we are dropping the Acid Blue 74 is dull. Mason is holding the dropper about 1 cm above the penny. Not as close as Jesse. The liquid is piling up again. We ran out of liquid in the dropper at 32. It is hanging off the side at 38. And that is how many drops we got on it.

Obsv: 13= Jose is dropping it onto the penny, really close like Jesse did. It looks like it is scooting to the top with every drop that is dropped. Jose is dropping the drops at the edge of where the liquid is to fill in the empty space. We ran out of liquid in the dropper at 40 drops. The drops are not expanding. It looks like no drops are being added. We got 48 drops on this penny! Our best penny yet! <span style="color: rgb(217, 13, 13);"><span style="font-family: Georgia,serif;">

Overall Observation: Overall, we think that with the Acid Blue 24, we can get more drops on the penny, than with the soap. And the Acid Blue 74, took a little more pressure to come out of the dropper. <span style="font-family: Georgia,serif;"><span style="color: rgb(217, 13, 13);"> <span style="color: rgb(217, 13, 13);"> <span style="display: block; text-align: left; color: rgb(235, 227, 45);">5. (Cisneros) Conclusions (first tell whether hypothesis was right or wrong)- Our Hypothesis was incorrect because we had 4 out of 5 pennies that had more than 30 drops. When we tested the soap and one had more than 30 drops and the other one had 35 drops. We tested the Acid Blue 74 and all the pennies that were tested had more than 30 drops. With the Acid Blue 74 we could drop up to 48 drops and with the soap only 35 so the Acid Blue 74 works better. <span style="font-family: Georgia,serif;">

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