Have you ever noticed that salt is sold in the store when we have snow and ice on the roads? If you have ever wondered about salt and what effect it has on water. If you put salt on the frozen ice in the road it seems to melt so does it keep water from freezing? You have just discovered a science project for the school fair.
Science projects are right under our noses and can be as simple to find as looking at what we do every day in our lives.
This experiment will not cost you anything except a little bit of ordinary table salt.
Get together 3 containers that you can put water into and freeze. They should be plastic that will freeze well. Also you do not want them to be too large. If you can use a sour cream container or a few small plastic cereal bowls that works well.
Fill each container half full with water from the faucet.
In the first bowl put in 2 teaspoons of salt and stir well to dissolve most of the salt In the second container put in 1 teaspoon of salt and stir to dissolve In the last cup only have water and no salt.
Make sure the water is room temperature.
Now place them all on a baking sheet and place in the freezer in a stable place that will not tip over.
Leave these there all day or over night. In the morning remove the containers and make a visual observation.
Were all the containers frozen solid? If not were they somewhat frozen? Did any not freeze at all?
Did the amount of salt in the water effect how much the water froze?
Make sure to document your information and take photos. This project is not a demonstration that you can do immediately at a fair but you can show what happened to the salt and water combination in the science project.
By: Lesa Bolt
Posts Tagged ‘Kids Science Project’
Kids Science Project for 7th Grade
April 30th, 2010Kids Science Project Idea – Green Eggs
April 2nd, 2010
This science project is unique as you will turn an egg green but how it happens is very interesting and a great demonstration experiment.
Things you will need for the science project.
An egg Red cabbage A pan A pot A bowl Oil A parent to help
You are going to make a green egg and cook it, but you will not be using any food coloring or anything green. Let us get to the experiment and we can discuss the results and hypothesis later.
Take the red cabbage and cut into slices as if you were making cole slaw. You will not need a great deal of cabbage. A cup or two should do the trick. Place the cabbage shreds into the pot and pour in a cup of water. If you are using more cabbage you may want a little more water. You do not need a lot. Turn on your stove top and leave on high or a fairly high heat. Let the cabbage cook for a bit. This could take ten to fifteen minutes. You want to get the water to turn a nice purple red color from the cooked cabbage. We will then use the water from the cabbage. Once the cabbage has cooked and the water is a very dark purple color you are ready.
Take your fresh egg and crack it. Separate the yolk into a small bowl and the white into a little larger bowl. Now take a spoonful of the red water from the cabbage and put into the bowl with your egg white and use the spoon or a fork to stir it up.
Heat up your skillet or pan and place a small amount of oil in the pan as you will be cooking the egg and need to keep it from sticking. When the pan is heated pour the colored egg white into the pan. You will notice the egg white is green. You can also put the yolk on top of the egg white now to cook both together.
This will be cooked sunny side up because you do not want to flip it over as you want everyone to see the green coloring. When done you can obviously eat the egg. There is nothing wrong with it because the coloring was added by the cabbage.
Why did this happen? You took the purple coloring from the cabbage and put it in the egg white and it turned green. You did not have the yolk involved in this. You only added the yolk after the white was cooked to finish the complete egg.
Why did this green coloring happen? What chemical process occurred? Was there any change in the egg shite itself?
This is a great science project for chemistry class in high school.
By: Lesa Bolt
