How Does Temperature Affect The Rate Of Reaction

In reference to the collision theory, molecules act as small spheres that collide and bounce off each other, transferring energy among themselves when the collide. In order for a reaction to occur, there must be collisions between molecules. Through experimentation, factors are discovered that influence the reaction rates of chemical reactions include the concentration of reactants, temperature, surface area, the physical state of reactants, and a catalyst. This experiment regarding the factors that affect reaction rate tests the effects of increased concentration and

Chemical reactions are significant in our everyday lives. Combustion reactions help release energy to heat our homes and move our vehicles, oxidation-reduction reactions keep the batteries in our cell phones and laptops functioning and acid-base reactions take place when cleaning your oven. Not all reactions happen at the same speed. The speed at which a chemical reaction proceeds is known as the rate of reaction. Chemical reactions that proceed quickly, including explosion and combustion reactions are said to have a fast rate of reaction. Chemical reactions that proceed slowly,

Many factors effect reaction rates, two shown above include temperature and concentration. Concentration affects the rate of reactions because the more concentrated a solution the more likely collisions between particles will be. This is simply because there are more particles present to collide with each other. When the temperature is higher, particles will

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

This means that substances that absorb more hydrogen ions will produce faster reactions times due to higher temperatures. The data obtained from this experiment did not support the claim hypothesized. In the hypothesis it was stated that the acidic solution would produce the fastest reaction time. At the end of the completed experiment it was discovered that the basic solution produced the fastest reaction time of 60.771 seconds, while the acidic solutions reaction time was 65.971 seconds, and the neutral solution produced a 63.425 reaction time. Some potential problems that could have arouse during this experiment were that not all beakers contained the same amount of substance. Since the liquids were measured with the naked eye there is a chance that amount of solutions in each beaker were different. Another potential issue could have been not allowing all of the antacid tablet to dissolve before stopping the timer. This issue much like the one stated before would be hard to tell by just looking at the experiment with a naked eye. Perhaps in another experiment looking to test pH and reaction times an experimenter should take solutions ranging across the pH scale and change the temperature of each substance to see how temperature can affect the reaction

For our lab, we have six beakers of water. Three of the beakers contain high temperature water that range from 46 ℃ to 55 ℃, while the other three beakers contain room temperature water that range from 22 ℃ to 23 ℃. Then, we take six different colored Alka Seltzer tablets, and place them into the beakers one at a time. We record the length of time it takes for each Alka Seltzer to dissolve

2. Some of the outside variables that could have affected our outcomes for the experiment are the ambient temperature and how quickly the groups took the hot dogs out of the ice water to measure their temperatures. The ambient temperature was 28 degrees Celsius, the coldest temperatures of the hot dogs ranged from 35 to 37 degrees Celsius, so for the groups that measured their hot dogs’ temperature quicker, they gave their hot dogs a head start in the warming process. For groups that were not as quick with their measurements, their hot dogs starting warming up at a later time, so by the time the experiment was over, their temperatures would have been lower than the groups that measured quickly. We did not control these outside variables because we did not increase or decrease the room temperature by turning on the AC.

The amount of tablets did effect the temperature of the water. Our findings made our hypothesis incorrect. The temperature of the water did increase as the number of the tablets increased also. In this experiment, the finding were quite surprising, simply because I thought that the temperature of the water will decrease as the amount of the number of tablets increased. In the real world I feel like this information would be beneficial, because it shows the reaction of an acid plus a base mixed with water.

My investigative question is does microwaved water stunt plant growth? I was interested in learning more about this topic because I wanted to know if microwaves can put chemicals in your food causing you to not get all of the nutrients from the food. The purpose of my experiment is to see if water set to a boil on the stove, water set to a boil in the microwave, or water from both the microwave and stove will make plants grow more, also to see if the microwave puts bad chemicals into your food. My independent variable is the type of water used. My dependant variable is the height of the plant. My hypothesis is, if plants are grown with microwaved water then they will not grow as much as plants grown with water heated from the stove.

I will be doing my science fair project on what ingredient will best activate a package of dry yeast. Dry yeast was developed by Fleischmann's company during WW11, so that people in the army did not have to get their yeast refrigerated, while still being able to easily make bread. Activating means to cause an act or function. Activating dry yeast makes the yeast makes it thick, bubbly, and foamy. It will be an off white in color and sometimes appear to be more of a light brown. Yeast is single-celled fungi. There are roughly over 600 species of yeast that we know of. Many of which can be distributed greatly in nature. Where exactly can we get yeast? This may be a common question one may have about yeast. Yeast can be exudates in plants. This includes cacti and the sap of the plants. Also, yeast can be found in the skins of fruits like grapes, apples, and peaches. You may also get yeast from the skin of berries.

In this experiment, I will be investigating if the change in water temperature (independent variable) would affect the time it takes for sugar to dissolve (dependent variable).

Margaret Milcoff, a student of Mill Creek Middle School, participated in an activity called the science fair. Her topic was “Does temperature affect the growth of basil plants?” Margaret has a rich desire to absorb all of the facts of the future, so she did this particular science fair experiment to find out if simple plants, such as basil, would be able to survive the deadly affects of global warming. Margaret used the scientific method through her trials of the science fair. So without further a due here is Margaret’s very successful and meticulous science fair journey.

the effects of various gases on water, to experiment if different gases would change the pH of liquid solutions. To carry out the investigation, three gases, nitrogen, oxygen, and carbon dioxide, were dissolved into 100 mL of distilled water each. While the gases were being added to the water, there were fast-paced bubbles speeding around because the gas was present in the bubbles. Once the liquid was saturated, it was, then, measured for any changes in pH. If the pH was at 7, the pH was neutral. If the pH was higher than 7, it was alkaline. Finally, if the pH was lower than 7, it was acidic. The independent variable was the type of gas and the dependent variable was

The independent variable for this experiment is the temperature of the water bath, as this is what factor is changing throughout the practical. The temperatures will be ranging from 10°C to 50°C in ten degree increments. This will allow for the effect of temperature on the rate of reaction to be

was too fast to measure and so for my scale to reach above that, I