Use the link above to 'run' the experiment. Go through each test in the suggested order and select the options from the list that best fit your observations. Each box should have two solutions when you complete this portion. To run a test click "Run Reaction". Use the drop down on the simulation to select a new variable and the choose to decrease. Next click "start over" to reset and choose the next condition. The sequence below matches your data table. Control Decrease Temperature Increase Temperature Decrease Concentration Increase Concentration Decrease Surface Area Increase Surface Area Add Catalyst

Question

they both need two options
for temperture concentration and surface area have decreased and increased one for each
option, particles collide faster(steeper slope)
all a+b react to form c
control graph is directly proportional
some reactants remain only some product is formed
particles collide slower(lower slope)

Answer 1

To run your experiment and analyze the results, follow the sequence you've provided. Below is a suggested breakdown based on your description, focusing on the conditions you've specified for temperature, concentration, and surface area, as well as the influence of a catalyst.

Experiment Setup and Observations

1. Control

   • Observation: Graph is directly proportional.
   • Options:
     • All A + B react to form C.
     • Reaction progresses steadily as expected without any changes.

2. Decrease Temperature

   • Observation: Particles collide slower (lower slope).
   • Options:
     • Some reactants remain; only some product is formed.
     • The reaction slows down due to lower kinetic energy.

3. Increase Temperature

   • Observation: Particles collide faster (steeper slope).
   • Options:
     • All A + B react to form C more quickly.
     • Increased kinetic energy leads to more frequent and effective collisions.

4. Decrease Concentration

   • Observation: Particles collide slower (lower slope).
   • Options:
     • Some reactants remain; only some product is formed.
     • Fewer particles in solution lead to less frequent collisions.

5. Increase Concentration

   • Observation: Particles collide faster (steeper slope).
   • Options:
     • All A + B react to form C more quickly.
     • More reactants available leads to more frequent collisions.

6. Decrease Surface Area

   • Observation: Particles collide slower (lower slope).
   • Options:
     • Some reactants remain; only some product is formed.
     • Less surface area for reaction reduces effectiveness.

7. Increase Surface Area

   • Observation: Particles collide faster (steeper slope).
   • Options:
     • All A + B react to form C more quickly.
     • More surface allows for more collisions.

8. Add Catalyst

   • Observation: Particles collide faster (steeper slope).
   • Options:
     • All A + B react to form C more quickly.
     • Catalyst lowers activation energy, increasing the rate of reaction.

Summary of Findings:

• For temperature changes, decreasing temp slows the reaction, while increasing temp speeds it up.
• For concentration, lower concentration reduces reaction speed, while higher concentration increases it.
• Surface area impacts collision frequency; increasing surface area accelerates the reaction.
• Adding a catalyst enhances the reaction rate without being consumed.

You can adjust your testing conditions and their respective observations in the simulation according to these notes. Make sure to document your data and outcomes for a complete analysis.