Reaction rates · Grade 9
Measuring rate with a gas syringe
ChemAI · Worksheet
NameClassDate
Aim
Collect the carbon dioxide and plot volume against time.
Before you start: what do you predict will happen? Why?
What you do
| Step | What I observed | |
|---|---|---|
| 1 | Open the “Data logger” under the bench and choose “Gas volume”. | |
| 2 | Add marble chips: the plunger moves out as CO₂ collects. | |
| 3 | Wait until the curve levels off (×5). Where is the reaction fastest? |
Questions
- Write a word or symbol equation for one reaction you observed.
- Explain your most important observation using particles, ions or energy.
- Was your prediction right? What would you change to get a more reliable result?