Question 1
The energy profile for a reaction is shown. What is the enthalpy change, ΔH, for the forward reaction?
The chemistry internal assessment: the scientific investigation
Your own research question: about 10 hours, at most 3,000 words, 20% of your grade.
| Weight | 20% at SL and HL |
|---|---|
| Time | 10 hours of the course |
| Report | At most 3,000 words |
| Task | Gather and analyse data to answer your own research question |
The inquiry process
- Exploring and designing: a focused question, the variables and a safe method.
- Collecting and processing: enough data over a useful range, with uncertainties.
- Concluding and evaluating: what the data show and how far to trust them.
Try 2 questions
Question 2
The graph shows the distribution of molecular kinetic energies for the same sample of gas at two temperatures, T₁ and T₂. Which statement is correct?
Next step
Questions people ask
How much is the IB Chemistry IA worth?
20% at SL and HL. Paper 1 is 36% and Paper 2 44%.
What is the word limit for the IB Chemistry IA?
3,000 words.
Can the chemistry IA use a database or a simulation?
Yes, where it answers your question.