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Salty or Sweet (experiment 1)

Now you know that temperature can affect the density of water. In this part of the experiment, test to see if adding salt or sugar will make water more dense.Question & hypothesis: Will adding salt make water more dense? Will adding sugar make water more dense? Which is denser, sugar water or salt water? Write down what you think will happento the density of water if you add salt or sugar.

Procedure

1. Fill three beakers with 150 ml (2/3 cup) of water. Add food coloring to make blue, red, and green water.
2. Add 2teaspoons of salt to the red beaker and stir until the salt is dissolved. Add 2 teaspoons of sugar to the blue water and stir until it is dissolved.
3. Try putting a raisin in each of thebeakers. Does it float? Remove the raisins with a spoon.
4. Pour some of the red (salty) water into the graduated cylinder. Using the pipet, slowly add the blue (sugar) water one or two dropsat a time. Record which sinks to the bottom and which floats on top.
5. Add the green (pure) water drop-by-drop to the other two and record what happens.

Conclusions
Were yourpredictions correct? Did adding salt and sugar to the water make the water more dense or less dense? Which was more dense, the salt water or the sugar water?
 
 
The effect of sound in plants(experiment 2)
Project description
Design an experiment and observe plant growth in two identical rooms, while one room is silent and the other room has loud noise of a radio.   |

Comparing typesof artificial light on plant growth (experiment 3)
Project description:
In this project you design and perform an experiment to compare the effect of different artificial lights on plantgrowth. Your experiment results can be submitted in the form of a table and a graph. Allow 3 to 6 weeks for your experiments.

 
http://www.hometrainingtools.com/liquid-density-project/a/1305/...