The reaction between the bicarbonate ion and citric acid produces water, carbon dioxide, and the citrate ion. Write the balanced equation for the reaction.
One of our flaws was that the temperature of the water was not exactly the same when we did the different trials. The temperatures were slightly off from our recorded value during the experiments. The change in temperature would affect the time it took for the Alka-Seltzer tablet to dissolve in the water. If there was a direct relationship between water temperature and dissolve time, we would not be able to see it because the temperatures are off and the dissolve times are not associated with the correct temperature. Another flaw is that we did not use the same amount of water throughout the experiment. We used a beaker to measure the water, which did not result in accurate measurements. The difference in amount of water could result in a difference in reaction time. The third flaw in the experiment was that during the reaction of the warm water, the water in the cup overflowed and spilled, bringing some of the Alka-Seltzer tablet with it. There were different amounts of tablet in different areas of the water, which means a different amount of Alka-Seltzer remained inside of the cup in each trial. This difference would mean that data for the warm water would fluctuate and we would not have accurate
was too fast to measure and so for my scale to reach above that, I
The jar was held in place so that it did not obstruct airflow in straw when it was placed over the candle. The process of trial 1 was repeated three times with the additional straw.
Some inconsistencies may have been a slightly different amount of paint during each experiment and the speed of washing your hands would be different each time you wash them. The amount of soap could have been a little different each time, along with the water pressure.
For our experiment, we first filled three beakers up with water in different temperatures, such as; warm, room temperature, and ice. We then added three drops of red dye and placed one stick of celery in each beaker with water and red dye. We then waited 10 minutes, took the temperature again, which showed change and then we waited 10 more minutes. After
An experiment that explores how temperature is used to speed up a reaction rate is the use of light sticks or glow sticks. If a light stick is refrigerated, once the seal is broken, the reaction will slow down and the light stick gives off light for longer periods of time. If the glow stick is room temperature, the reaction will speed up and the light goes out faster. Heat can be used to speed up a reaction to see the reaction occur quickly. The more energy molecules have, the more they combine. Conversely, scientist often use ice water to slow down reactions. When molecules have less energy, it takes them longer to combine.
During this experiment I ran into two major problems which could have been improved. Firstly I had trouble measuring one hundred percent accurately since I did not have the right equipment to do so. The next time I attempt this experiment I will invest in appropriate equipment to help the accuracy of my results. Secondly I found it hard to perform this task in a messy environment which made me understand the ‘messy room, messy mind’
During this experiment, both the water and the copper had gone through many different temperature changes and a physical change. Originally, the copper was very rusty and old. However, because the copper is a metal and can raise to very high temperatures without melting, we were able to perform this experiment. When putting the copper over the flame, the flame became more of a red color as it touched the copper, because it was transferring the heat and the copper gradually became hotter from the original temperature over the course of 2 minutes. After the copper was done heating, it was placed right into the water. The water began to slowly evaporate as the copper released energy, causing a good amount of heat. This would cause the temperature
Investigate the effect of temperature change on the rate of hydrolysis of starch using the enzyme amylase. Amylase investigation --------------------- AIM: To investigate the effect of temperature change on the rate of hydrolysis of starch using the enzyme amylase. These are variables that may affect the rate of the reaction: * concentration of amylase * concentration of iodine * temperature conditions of reaction * pH conditions of reaction I intend to investigate the effect of temperature change on the rate of the hydrolysis of starch, using the enzyme amylase.