Chemistry GCSE
Experimental control of variables
What Experimental control of variables means in Chemistry GCSE, as defined for AQA.
Definition of Experimental control of variables
Check what you remember
Read the wording for your board, then hide it and explain Experimental control of variables in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
A valid comparison requires the same mass or amount of reactant when surface area is changed, so that the effect is due to surface area alone.
Topics that use Experimental control of variables
- Collision theory and activation energy (AQA GCSE)
Related terms
- Activation energy
- Catalyst
- Collision frequency
- Collision theory
- Concentration and pressure effects
- Effect of temperature on collision energy
- Explaining reaction rate in particle terms
- Frequency of collisions
Using Experimental control of variables in the exam
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