Hand Warmer Project
Intro:
The basis to this project was to create hand warmers for our school store to sell during the winter sports season, especially since soccer was moved to that time of year. Each group was instructed on an initial lab and was then released to take it in their own direction.
The basis to this project was to create hand warmers for our school store to sell during the winter sports season, especially since soccer was moved to that time of year. Each group was instructed on an initial lab and was then released to take it in their own direction.
Chemistry:
Before we constructed our hand warmer, we tested a multitude of salts that had varying effects when combined with water. We tested the temperature change of each reaction with a calorimeter and found that LiCl, our main reactant, was the most effective salt. After, we tested to find the best proportion of water to LiCl to water, which ended up being 1 g to 7 mL. We calculated the heat energy produced by this reaction using the equation Q = mc(^T). Where Q is the energy produced, m is the mass, c is the specific heat of the water and ^T is the change in tempature.
Reflection:
My group did a very good job with staying on task, working, and communicating our individual ideas. We also meshed together and our teamwork was rather seamless for the most part. We did struggle however with finalizing ideas, I know for me I wanted to keep things open to others' ideas considering I feel like I tend to take over in that area. We also just stuck to the basics and didn't particularly try to go outside of that too much. If given more time for the project we definitely would've tested more on the length and outward temperature of the hand warmer.