Osmosis experiment
Osmosis
Trial experiment
Aim: Our aim in this experiment is to find out which vegetable absorbs the most liquid over a given time due to osmosis.
Chosen Apparatus: we will need to use: six test tubes; a test tube rack; an apple; a potato; a cork borer; a measuring cylinder; sugar solution; scales to measure in milligrams; a ruler; a knife; and a pair of tweezers.
Apparatus
Why we chose it
Advantages
Alternative equipment apple Its an absorbent fruit and is similar to a potato
It will show clear differences (if any)
Other fruit such as banana potato Its an absorbent vegetable and is similar to an apple.
It will show clear differences(if any)
Other vegetable such as parsnip
Cork borer
It helps us get as close to identical pieces of potato/apple as possible
The pieces of fruit/vegetable will be the same diameter
A knife could be used but would not be able to achieve the same diameter for every piece of fruit/vegetable scales The scales will accurately measure the weight of the pieces of fruit/vegetable
Measuring in milligrams to 3 decimal places will provide better
A ruler to measure simply length or scales which measure in smaller weights ruler To get equal lengths of fruit/vegetable
Straight edge none Measuring cylinder
Measure out solutions of sucrose accurately
Accurate measurements none Independent variables are the different solutions of sucrose, the dependent variable is the change in mass, and the controlled variables include the volume of liquid, the length of each piece, where the test tubes are kept and the time each piece had in each test tube.
Method:
1. using the cork borer, cut 6 pieces of potato and 6 pieces of apple, use the ruler and knife to cut each piece to the same length.
2. Measure the weight of each piece, and place 1 piece in each solution.
3. Wait 24 hours and remove the pieces and measure weight on scales.
Osmosis
Real experiment
Aim: our aim in this experiment is to test
Trial experiment
Aim: Our aim in this experiment is to find out which vegetable absorbs the most liquid over a given time due to osmosis.
Chosen Apparatus: we will need to use: six test tubes; a test tube rack; an apple; a potato; a cork borer; a measuring cylinder; sugar solution; scales to measure in milligrams; a ruler; a knife; and a pair of tweezers.
Apparatus
Why we chose it
Advantages
Alternative equipment apple Its an absorbent fruit and is similar to a potato
It will show clear differences (if any)
Other fruit such as banana potato Its an absorbent vegetable and is similar to an apple.
It will show clear differences(if any)
Other vegetable such as parsnip
Cork borer
It helps us get as close to identical pieces of potato/apple as possible
The pieces of fruit/vegetable will be the same diameter
A knife could be used but would not be able to achieve the same diameter for every piece of fruit/vegetable scales The scales will accurately measure the weight of the pieces of fruit/vegetable
Measuring in milligrams to 3 decimal places will provide better
A ruler to measure simply length or scales which measure in smaller weights ruler To get equal lengths of fruit/vegetable
Straight edge none Measuring cylinder
Measure out solutions of sucrose accurately
Accurate measurements none Independent variables are the different solutions of sucrose, the dependent variable is the change in mass, and the controlled variables include the volume of liquid, the length of each piece, where the test tubes are kept and the time each piece had in each test tube.
Method:
1. using the cork borer, cut 6 pieces of potato and 6 pieces of apple, use the ruler and knife to cut each piece to the same length.
2. Measure the weight of each piece, and place 1 piece in each solution.
3. Wait 24 hours and remove the pieces and measure weight on scales.
Osmosis
Real experiment
Aim: our aim in this experiment is to test