Topic 1 - Obtaining evidence from experiments

?
  • Created by: E456
  • Created on: 04-04-17 09:46

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…

Comments

No comments have yet been made