The effect of pH on the rate of an enzyme reaction: plan
I can write a testable prediction and plan an investigation into the effect of changing pH on the rate of an enzyme reaction.
The effect of pH on the rate of an enzyme reaction: plan
I can write a testable prediction and plan an investigation into the effect of changing pH on the rate of an enzyme reaction.
These resources will be removed by end of Summer Term 2025.
Lesson details
Key learning points
- Planning an investigation into the effect of pH on the rate at which amylase enzyme breaks down starch into maltose
- Writing an aim for the investigation, and a testable prediction
- Identifying independent and dependent variables, and which factors to control
- Planning a method, to include use of iodine in continuous sampling to indicate when all starch has been broken down
- Identifying hazards and risks, and how to limit them
Keywords
PH - A measure of how acidic or alkaline a solution is.
Rate of reaction - How fast a chemical reaction occurs.
Starch - A carbohydrate, which is a polysaccharide (a polymer of sugar).
Amylase - An enzyme that breaks down starch into maltose (a type of sugar).
Continuous sampling - A method that involves taking regular and frequent samples.
Common misconception
Misconceptions mixing aim and prediction or leaving them vague, writing a method which is unclear, and analysing hazards and their risks.
Approaches for stating aims and predictions, writing a method and dealing with variables, and analysing hazards and their risk are all covered with examples and practice tasks.
Content guidance
- Risk assessment required - equipment
Supervision
Adult supervision required
Licence
This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).
Lesson video
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Starter quiz
6 Questions
Exit quiz
6 Questions
something that may cause harm
the harm that may be caused
an action taken to reduce the potential for harm
