Topic 1 - Obtaining evidence from experiments
- Created by: E456
- Created on: 04-04-17 09:46
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INVESTIGATE SKILLS
- You are expected to develop skills in four key areas:
- planning
- obtaining evidence
- analysing the evidence and drawing conclusions
- evaluating the evidence and the investigation.
- Yeast is a living organism and it converts sugar into alcohol, with the production of carbon dioxide as a by-product.
DESIGNING A MEASURING SYSTEM
- Ways of collecting and measuring gas:
- bubble it through water and collect it in an upside down measuring vessel.
- into a graduated syringe.
WHAT ARE YOU GOING TO VARY?
- When you choose your variable, it must be related quantitatively to the prediction that you make.
- It is advised to only choose one variable.
OVER WHAT RANGE SHOULD YOU VARY THE CHOSEN VARIABLE?
- The range over which you vary your factors is something that you have to decide using…
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