Rates of ReactionRequired Practical
Required Practical: Investigating Rate of Reaction
Part of Rates & Collision Theory — GCSE Chemistry
This required practical covers Required Practical: Investigating Rate of Reaction within Rates & Collision Theory for GCSE Chemistry. Revise Rates & Collision Theory in Rates of Reaction for GCSE Chemistry with 20 exam-style questions and 16 flashcards. This is a high-frequency topic, so it is worth revising until the explanation feels precise and repeatable. It is section 6 of 13 in this topic. Revise both the method and the reason for each step, because practical questions often test understanding rather than pure recall.
Topic position
Section 6 of 13
Practice
20 questions
Recall
16 flashcards
🔬 Required Practical: Investigating Rate of Reaction
Example: Marble chips (CaCO₃) + Hydrochloric acid
CaCO₃(s) + 2HCl(aq) → CaCl₂(aq) + H₂O(l) + CO₂(g)
Method (gas syringe):
- Measure 50 cm³ of HCl into a conical flask
- Add marble chips (weighed) and immediately connect gas syringe
- Start stopwatch and record volume of CO₂ every 10 seconds
- Continue until no more gas is produced
- Plot volume (y-axis) against time (x-axis)
Variables:
- Independent: What you change (e.g., concentration, temperature, surface area)
- Dependent: What you measure (volume of gas or time)
- Control: What you keep the same (mass, volume, temperature if not testing it)