Question 1
The graph shows the potential energy of the same reaction with and without a catalyst. Which statement describes how the catalyst changes the reaction?
Tuesday, January 26, 2027 in the 1:15 p.m. session, and Wednesday, June 23, 2027 in the 9:15 a.m. session. Check your reporting time with your school.
26 weeks, 104 hours in all
Start with Topic 2
Chemical Reactions: 36 of your hours. It is 9 of the 24 questions on our timed checks, 38%.
| Topic | Your hours | Share of the checks |
|---|---|---|
| Topic 2: Chemical Reactions | 36 | 38% |
| Topic 1: Structures and Properties of Matter | 32 | 33% |
| Topic 3: Energy | 12 | 13% |
| Topic 6: Engineering, Technology, and the Applications of Science | 8 | 8% |
| Topic 4: Waves and Electromagnetic Radiation | 4 | 4% |
| Topic 5: Matter and Energy in Organisms and Ecosystems | 4 | 4% |
| January 2027 | Tuesday, January 26, 1:15 p.m. |
|---|---|
| June 2027 | Wednesday, June 23, 9:15 a.m. |
| Length | Three hours |
| Admission | After completing the required Investigations |
Use the planner on this page: pick your exam and the hours you have each week, and it spreads them over the six topics by their share of the test and how sure you feel, with timed checks in the final weeks.
| Temperature (K) | Volume (L) |
|---|---|
| 250 | 1.25 |
| 300 | 1.5 |
| 350 | 1.75 |
| 400 | 2 |
Yes. Physical Science: Chemistry is scheduled for Tuesday, January 26, 2027, in the 1:15 p.m. session.
Students are permitted three hours.