Identify a question that you would answer in a experiment. As you decide on a question or topic for your project, ask yourself:
- Can this question be answered by an experiment?
- Can I conduct the experiment with supplies that I have readily available to me?
Also, write down what kinds of treatments you can impose and the variables and factors you can control to answer your question. If you have a difficult time identifying variables for your question you may need to propose a different question for your project.
Write down your question or problem statement. Know some background information on your topic.
Based on the question asked give a hypothesis that can be tested. Give a summary of info you know about the question. Only the points that you think will help you answer the question or design an experiment.
If the choice of experiment is up to you, you can choose any experiment. I will use the salt-sand separation experiment for answering your question.
Question: How much salt and sand is there in a given salt-sand mixture?
Hypothesis: Water solubility characteristics of salt and sand can be combined with boiling to separate a mixture of salt and sand.
Background Knowledge: Salt dissolves in the water, while sand does not. So sand can be separated from a sand-salt mixture dissolved in water by the process of filtration (using a filter paper). The salt can be collected by evaporating the water from the salt solution (after filtration).
Supplies needed: salt-sand mixture, water, glass beaker, glass rod (for mixing), Bunsen burner (or other arrangement for boiling water), filter paper, weighing balance.
Variables: amount of water, boiling temperature, extent of mixing, etc.
Hope this helps.