Practicals

Question 1

How do you prepare a food test?

Answer 1

• Use mortar and pestle
• Filter out any chunks of the sample

Question 2

How do you prepare the potato practice?

Answer 2

1- Cut equal sizes potato
2- Blot with tissue paper and weigh
3- Put pieces into different concentrations of sucrose solution for a few hours
4- Remove, blot with tissue paper and reweigh
5- Work out percentage change in mass

Question 3

How do u work out percentage change in mass?

Answer 3

End mass - start mass
—————————— x100
Start mass