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.
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
