Home > Science Experiments > Osmosis and Diffusion - Experiment 2 - Changing Concentrations: Will a bag of salt water draw in fresh water?

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Experiment 2
Changing Concentrations: Will a bag of salt water draw in fresh water?

Purpose/Hypothesis

In this experiment, you will see osmosis in action. You will place a balloon filled with salt water into a bucket of fresh water and watch what happens. Before you begin, make an educated guess about the outcome of this experiment based on your knowledge of osmosis. This educated guess, or prediction, is your hypothesisAn idea in the form of a statement that can be tested by observation and/or experiment.. A hypothesis should explain these things:

• the topic of the experiment
• the variable you will change
• the variable you will measure
• what you expect to happen

A hypothesis should be brief, specific, and measurable. It must be something you can...

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1. Introduction
2. What are some examples of diffusion?
3. How does osmosis work?
4. Experiment 1 - Measuring Membranes: Is a plastic bag a semipermeable membrane?
5. Experiment 2 - Changing Concentrations: Will a bag of salt water draw in fresh water?
6. Design Your Own Experiment