8a, 8b & 8c – To Investigate Factors Affecting Rates of Osmosis Across Semi-Permeable Membranes (LC 2027) (Leaving Cert Biology): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
ShowHide
Practise the questions
12 questions from this quiz
What is osmosis?
What is osmosis?
Water moves from high to low water concentration
What does Visking tubing allow to pass through?
What does Visking tubing allow to pass through?
Water but not sucrose
In investigation 8a, which temperature shows the greatest mass increase?
In investigation 8a, which temperature shows the greatest mass increase?
40°C
Why does higher temperature increase osmosis rate?
Why does higher temperature increase osmosis rate?
Molecules move faster with more energy
In investigation 8b, which sucrose concentration shows the greatest mass increase?
In investigation 8b, which sucrose concentration shows the greatest mass increase?
80%
Why does a steeper concentration gradient increase osmosis rate?
Why does a steeper concentration gradient increase osmosis rate?
Provides greater driving force
In investigation 8c, which tube length shows the greatest mass increase?
In investigation 8c, which tube length shows the greatest mass increase?
60 cm
Why does larger surface area increase osmosis rate?
Why does larger surface area increase osmosis rate?
More membrane pores available
Which variable must be controlled in fair testing?
Which variable must be controlled in fair testing?
Volume of sucrose solution
How long are tubes left in water during the experiment?
How long are tubes left in water during the experiment?
20 minutes
What is percentage change if initial mass is 10 g and final mass is 15 g?
What is percentage change if initial mass is 10 g and final mass is 15 g?
50%
Which term should be used to describe Visking tubing?
Which term should be used to describe Visking tubing?
Semi-permeable