Question

Conclusion

Briefly restate the purpose of the experiment (select which factor you chose to measure) (2pts)
Explain what your data is showing about the phenomena you were investigating. How did your factor affect the rate of reaction? (review your data table) (2pts)
Explain how this lab relates to what you have been learning about in this unit (use collision theory to explain your data) (4pts)
(2 points)
Question 7: The purpose of this experiment was to investigate how
affects
.

Answer 1

Here are two options you can use or adapt. Option A is a short, ready-to-submit conclusion for the common case where you measured temperature. Option B is a fill-in-the-blank template you can adapt for whichever factor you actually tested (concentration, surface area, catalyst, etc.).

Option A — example for temperature (ready to submit)
- Purpose (2 pts): The purpose of this experiment was to investigate how temperature affects the rate of the chemical reaction.
- What the data show (2 pts): Our data show that as temperature increased, the reaction rate increased (reaction times became shorter / product formed faster). For example, when the temperature rose from 15 °C to 45 °C, the average reaction time decreased from X s to Y s, indicating a clear positive correlation between temperature and rate.
- Connection to the unit and collision theory (4 pts): This result is consistent with collision theory. Increasing temperature raises the kinetic energy of molecules, so more collisions exceed the activation energy and collisions occur more frequently. The combined effect of increased collision frequency and a greater fraction of effective collisions explains the faster reaction at higher temperatures.
- Final sentence (2 pts): The purpose of this experiment was to investigate how temperature affects the rate of reaction.

Option B — fill-in-the-blank template (use for any factor)
- Purpose (2 pts): The purpose of this experiment was to investigate how [choose one: temperature / concentration / surface area / presence of a catalyst / particle size] affects the rate of the reaction.
- What the data show (2 pts): The data show that as [factor] increased/decreased, the reaction rate [increased/decreased/no clear change]. Specifically, when [factor] changed from [value A] to [value B], the reaction rate changed from [rate A] to [rate B] (show values from your data table and mention any outliers).
- Connection to the unit and collision theory (4 pts): According to collision theory, reaction rate depends on how often and how effectively reactant particles collide. If you tested:
- concentration: higher concentration means more particles per volume → more frequent collisions → higher rate.
- surface area: increased surface area exposes more reactant particles → more collisions per time → higher rate.
- catalyst: a catalyst provides an alternative pathway with lower activation energy → greater fraction of collisions are effective → higher rate.
- temperature: higher temperature increases kinetic energy → collisions are more frequent and more energetic → higher rate.
Use the explanation that matches the factor you measured and tie it to the trend seen in your data.
- Final sentence (2 pts): The purpose of this experiment was to investigate how [factor] affects the rate of reaction.

If you want, tell me which factor you tested and paste your data table (or the key numbers) and I will write a conclusion that uses your actual values and wording.