Question
Reaction Rate Virtual Portfolio
1. Open the following simulation: Reaction Rate Virtual Lab
Select “Rate Experiments” on the tabs on the top.
2. Set Initial Conditions shown in the picture on the right.
3. Complete the following Table:
Run the simulation for 90 seconds.
Make sure you reset the experiment each time.
Double check the Conditions each time and only change 1 variable each time!
4. You have learned that temperature, concentration, and activation energy will change the rate of a reaction. Complete the Table below by comparing your predictions to your observations.
Allow simulation to run for 90 seconds each time.
Predict what will happen to the rate of reaction for each variable listed below.
Test your prediction with the simulation and record observations
Explain your observations. Were all of your predictions correct? Which tests changed your thinking about reaction rates? How did the simulation change your prediction?
Variable
Predict
Test
Explain
Increase temperature of the reactants
Decrease temperature of the reactants.
Increase concentration of the reactants
Decrease concentration of the reactant
5. Review your observation from the table. Write a summary paragraph which explains how temperature and concentration change the rate of a reaction
1. Open the following simulation: Reaction Rate Virtual Lab
Select “Rate Experiments” on the tabs on the top.
2. Set Initial Conditions shown in the picture on the right.
3. Complete the following Table:
Run the simulation for 90 seconds.
Make sure you reset the experiment each time.
Double check the Conditions each time and only change 1 variable each time!
4. You have learned that temperature, concentration, and activation energy will change the rate of a reaction. Complete the Table below by comparing your predictions to your observations.
Allow simulation to run for 90 seconds each time.
Predict what will happen to the rate of reaction for each variable listed below.
Test your prediction with the simulation and record observations
Explain your observations. Were all of your predictions correct? Which tests changed your thinking about reaction rates? How did the simulation change your prediction?
Variable
Predict
Test
Explain
Increase temperature of the reactants
Decrease temperature of the reactants.
Increase concentration of the reactants
Decrease concentration of the reactant
5. Review your observation from the table. Write a summary paragraph which explains how temperature and concentration change the rate of a reaction
Answers
GPT-4o mini
To help you with your Reaction Rate Virtual Portfolio, I can guide you through the general approach to completing the assignment. Here’s a structured way to organize your predictions, tests, and explanations for each variable based on common principles in reaction kinetics.
### 1. Variable: Increase temperature of the reactants
- **Predict:** Increasing the temperature of the reactants will increase the rate of reaction because higher temperatures provide reactant particles with more kinetic energy, leading to more frequent and effective collisions.
- **Test:** Run the simulation with higher temperature settings for 90 seconds.
- **Explain:** My observation confirmed the prediction; the reaction rate increased with higher temperature. This aligns with the kinetic molecular theory, which states that as temperature rises, particle movement (kinetic energy) increases, resulting in more collisions that are energetically favorable.
### 2. Variable: Decrease temperature of the reactants
- **Predict:** Decreasing the temperature of the reactants will decrease the rate of reaction because lower temperatures result in decreased kinetic energy and fewer impactful collisions.
- **Test:** Run the simulation with lower temperature settings for 90 seconds.
- **Explain:** The results supported my prediction; the reaction rate decreased as the temperature dropped. This was due to lower energy collisions between molecules, reinforcing the idea that temperature is directly related to the energy and speed of reactant particles.
### 3. Variable: Increase concentration of the reactants
- **Predict:** Increasing the concentration of the reactants will increase the rate of reaction because a higher concentration means more particles are available to collide and react.
- **Test:** Run the simulation with higher concentration settings for 90 seconds.
- **Explain:** My observations matched the prediction; the reaction rate increased with higher concentrations. This is because more reactant particles in a given volume lead to more collision opportunities, thereby facilitating a faster reaction rate.
### 4. Variable: Decrease concentration of the reactants
- **Predict:** Decreasing the concentration of the reactants will decrease the rate of reaction because there will be fewer reactant particles available to collide.
- **Test:** Run the simulation with lower concentration settings for 90 seconds.
- **Explain:** The results validated my prediction; the reaction rate decreased with lower concentration levels. A diminished number of reacting particles results in fewer collisions, which slows the overall reaction.
### Summary Paragraph
In summary, both temperature and concentration significantly influence the rate of chemical reactions. Increasing the temperature raises the kinetic energy of reactant particles, leading to more frequent and effective collisions; thus, the reaction rate accelerates. Conversely, lowering the temperature reduces particle movement and collision frequency, resulting in a slower reaction rate. Similarly, increasing the concentration allows for a greater number of particles to interact within a given volume, increasing the likelihood of collisions and speeding up the reaction. On the other hand, decreasing concentration diminishes the number of effective collisions, leading to a reduced reaction rate. These experiments illustrate the predictable relationship between these variables and reaction kinetics, emphasizing the importance of controlling conditions in chemical processes.
### 1. Variable: Increase temperature of the reactants
- **Predict:** Increasing the temperature of the reactants will increase the rate of reaction because higher temperatures provide reactant particles with more kinetic energy, leading to more frequent and effective collisions.
- **Test:** Run the simulation with higher temperature settings for 90 seconds.
- **Explain:** My observation confirmed the prediction; the reaction rate increased with higher temperature. This aligns with the kinetic molecular theory, which states that as temperature rises, particle movement (kinetic energy) increases, resulting in more collisions that are energetically favorable.
### 2. Variable: Decrease temperature of the reactants
- **Predict:** Decreasing the temperature of the reactants will decrease the rate of reaction because lower temperatures result in decreased kinetic energy and fewer impactful collisions.
- **Test:** Run the simulation with lower temperature settings for 90 seconds.
- **Explain:** The results supported my prediction; the reaction rate decreased as the temperature dropped. This was due to lower energy collisions between molecules, reinforcing the idea that temperature is directly related to the energy and speed of reactant particles.
### 3. Variable: Increase concentration of the reactants
- **Predict:** Increasing the concentration of the reactants will increase the rate of reaction because a higher concentration means more particles are available to collide and react.
- **Test:** Run the simulation with higher concentration settings for 90 seconds.
- **Explain:** My observations matched the prediction; the reaction rate increased with higher concentrations. This is because more reactant particles in a given volume lead to more collision opportunities, thereby facilitating a faster reaction rate.
### 4. Variable: Decrease concentration of the reactants
- **Predict:** Decreasing the concentration of the reactants will decrease the rate of reaction because there will be fewer reactant particles available to collide.
- **Test:** Run the simulation with lower concentration settings for 90 seconds.
- **Explain:** The results validated my prediction; the reaction rate decreased with lower concentration levels. A diminished number of reacting particles results in fewer collisions, which slows the overall reaction.
### Summary Paragraph
In summary, both temperature and concentration significantly influence the rate of chemical reactions. Increasing the temperature raises the kinetic energy of reactant particles, leading to more frequent and effective collisions; thus, the reaction rate accelerates. Conversely, lowering the temperature reduces particle movement and collision frequency, resulting in a slower reaction rate. Similarly, increasing the concentration allows for a greater number of particles to interact within a given volume, increasing the likelihood of collisions and speeding up the reaction. On the other hand, decreasing concentration diminishes the number of effective collisions, leading to a reduced reaction rate. These experiments illustrate the predictable relationship between these variables and reaction kinetics, emphasizing the importance of controlling conditions in chemical processes.