I determined that my hypothesis was correct. The glass I chose to add the pure cane sugar did grow much more crystals at a more rapid pace. The purpose of my experiment is to grow a large amount of crystals on a wooden skewer. Rock candy is a candy made with sugar that I chose to attempt to grow on a wooden skewer. This delicious candy is actually crystallized sugar that I grew from a sugar-water solution. In this science fair project I have learn how to grow my own rock candy and determine if you use different types of sugar, it will change the growth rate of your sugar crystals.
When I added the extra cup of sugar to observation 2, it grew approximately 8 cm more than observation 1 over a period of 5 days. Introduction My hypothesis is: If I add more sugar to the same amount of boiling water, it will grow more crystals. I believe the more sugar you add to the water the thick and more concentrated the water will be. There will be more sugar to come out of the solution when it is sitting for a period of time. I chose this project because edible sugar crystals sounded like a good idea to create and try.
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I saw this idea from Science Bob website and thought it was interesting. The purpose is to see if more sugar causes more crystals. My objective is to grow a large number of sugar crystals on a wooden skewer. Rock candy is a candy made with sugar that I chose to grow with a wooden skewer. By catching the crystals on a wooden skewer it made it easier for me to eat and measure. Rock candy is a simple scientific experiment made at home from sugar and water. Rock candy can be made up of different types of sugar. I used pure cane granulated sugar.
Rock candy is formed when sugar is dissolved in boiling water and is cooled and placed in a glass jar with the wooden skewer. When the water evaporates the sugar crystal will start to grow overtime. The water and sugar is a saturated solution, meaning that water could only hold sugar if both were very hot. By cooling the water, the sugar comes out of the solution and forms crystals on the skewer and around the glass. The hypothesis for my experiment was that the more sugar you use the more crystals will form. My question is if you add more sugar, will more crystals?
Observation 2: There a bunch of crystals being formed on both glass and skewer. 1/10/12: Observation 1: Crystals are being formed on the skewer and glass. Observation 2: There are a bunch of crystals being formed and getting bigger. 1/11/12: Observation 1: There are a few crystals around the glass and a couple on the skewer. Observation 2: The crystals are growing on both the glass and the skewer at a more rapid pace than observation 1. 1/12/12: Observation 1: An additional 1-2 cm in length of crystals has been formed on the skewer.
The solution is still holding most of the sugar. Observation 2: The sugar crystals are about 15-17 cm in length on the wooden skewer. The inside walls of the glass have crystals formed all around it. Chart Information: Blue is observation 1 Red is observation 2 0-18 is the growth of crystals on the skewers measured in cm. Results In this experiment, observation 1 did not grow as much as observation 2 did. Observation 2 had an additional 2 cups of sugar which impacted the growth of sugar crystals. Observation 1 developed minor crystals, but very few attached to the wooden skewer.
Observation 2 developed many crystals, approximately 16 cm in length around the wooden skewer. Observation 2’s solution was thicker than observation 1’s, because the difference in the quantity of sugar. The final outcome for observation 1 was 7cm in growth on the wooden skewer with minor crystals forming around the glass. Observation 1’s crystals grew about 1. 5 cm daily. Observation 2 grew approximately 16 cm in length on the wooden skewer, an abundance of crystals remained throughout the glass. The average growth for observation 2 was 3. 25 cm daily, almost double of observation 1.
Conclusion My conclusion is that using more sugar will increase the amount of crystals that will form on the skewer. Observation 2 had more crystals than observation 1 because I added an additional 1 cup of sugar. My hypothesis was correct, the more sugar added to the same amount of water the more crystals will form. My question was answered by the more sugar you add the more quickly and bigger the crystals will grow. Observation 2 outgrew observation 1 with the forming of crystals. Both observations had the same amount of heat, same cool of period, and same amount of water.
The variable I used was adding 1 more cup of sugar to observation 2 than I did to observation 1. Acknowledgements I would like to acknowledge my mom and my dad for their help during this experiment. Without them it would have been a lot harder to complete. They help me work the stove and get the materials ready. Thank you mom and dad! References Science Bob (2012), Rock Candy Scientific Experiment. Retrieved at www. sciencebob. com Buzzel. com. 2010, Sugar calories. Retrieved at www. buzzel. com Rocky Candy (2010). Background information.