PURPOSE/QUESTION
The question that we will answer using this laboratory report is, “How is the rate of dissolving sugar affected by changing the temperature of the water, changing the rate of stirring, and changing the size of the crystal?” The independent variable of each laboratory experiment is different, however they are all being changed to get consistent and effective results for one dependent variable. The three independent variables are the temperature of water, rate of stirring and size of the crystal and the dependent variable of the all the experiments is the rate of sugar dissolving.
HYPOTHESES
Below are the laboratory experiment hypotheses that we have formed as a group to figure out what will happen to the rate of dissolving under …show more content…
Have a timer ready.
Start by adding one teaspoon of loose sugar. When stirring has begun, start the timer. Stir once every second until sugar particles are no longer visible in the water. Remember to make sure that the stirring rate is consistent, which in this case is one stir per second.
Record amount of time taken to dissolve completely.
When you have completed this part of the experiment with a rate of one stir per second, wash out the beaker and complete steps 1 and 2, but this time increase the rate of stirring to two stirs per second. Remember to keep the stirring rate consistent.
When you cannot see any of the sugar crystals, record the time, and once again rinse out the beaker, and repeat steps 1 and 2. Now, increase the rate of stirring to three stirs per second. Record the time, and rinse out the beaker thoroughly for the next experiment.
Lastly, this is the procedure that we will use for the third experiment in this lab.
Start of the process of setting up the experiment, by adding 400 millilitres of water at a temperature of about 32°C into the beaker. Have a timer …show more content…
We believe that the temperature of the solvent, which in case is the water, played a role in the rate of dissolving. According to Middle School Chemistry, when the water has an increased temperature, it also has an increased molecular motion, which results in the fact that the molecules of the water and sucrose move and vibrate faster. Because of this, the water molecules were able to find and dissolve the sucrose molecules faster, which resulted in the increased rate of
The question that we will answer using this laboratory report is, “How is the rate of dissolving sugar affected by changing the temperature of the water, changing the rate of stirring, and changing the size of the crystal?” The independent variable of each laboratory experiment is different, however they are all being changed to get consistent and effective results for one dependent variable. The three independent variables are the temperature of water, rate of stirring and size of the crystal and the dependent variable of the all the experiments is the rate of sugar dissolving.
HYPOTHESES
Below are the laboratory experiment hypotheses that we have formed as a group to figure out what will happen to the rate of dissolving under …show more content…
Have a timer ready.
Start by adding one teaspoon of loose sugar. When stirring has begun, start the timer. Stir once every second until sugar particles are no longer visible in the water. Remember to make sure that the stirring rate is consistent, which in this case is one stir per second.
Record amount of time taken to dissolve completely.
When you have completed this part of the experiment with a rate of one stir per second, wash out the beaker and complete steps 1 and 2, but this time increase the rate of stirring to two stirs per second. Remember to keep the stirring rate consistent.
When you cannot see any of the sugar crystals, record the time, and once again rinse out the beaker, and repeat steps 1 and 2. Now, increase the rate of stirring to three stirs per second. Record the time, and rinse out the beaker thoroughly for the next experiment.
Lastly, this is the procedure that we will use for the third experiment in this lab.
Start of the process of setting up the experiment, by adding 400 millilitres of water at a temperature of about 32°C into the beaker. Have a timer …show more content…
We believe that the temperature of the solvent, which in case is the water, played a role in the rate of dissolving. According to Middle School Chemistry, when the water has an increased temperature, it also has an increased molecular motion, which results in the fact that the molecules of the water and sucrose move and vibrate faster. Because of this, the water molecules were able to find and dissolve the sucrose molecules faster, which resulted in the increased rate of