How might you do an experiment on making an egg float in salt water?
Keep adding a tablespoon of salt, stirring (or “mixing” by “cupping” out water and pouring it back in), and then waiting to insure it’s all dissolved. Keep recording what you do and also the results of your actions (your observations). Eventually the eggs will float. See how much salt you had to add to the water and take the amount of salt and water and make a calculation to determine salinity. If you care to, repeat the experiment. You’ll have discovered how salty water has to be to float eggs. Lastly, you’ll write this up and turn it in.