Science Fair Projects - Grade One to Three - Is Gas Less Dense Than Water? [sciencetechnology-center.blogspot.com]

Science Fair Projects - Grade One to Three - Is Gas Less Dense Than Water? [sciencetechnology-center.blogspot.com]

It is very important that science fair projects grade one to three are still easy for the kids to do, yet very visual. They have to be able to "see" very clearly what happens to keep their interest. Science fair projects grade one to three must also be done in a short while as the little kids' concentration span is not very long yet.

This science fair project is just that, easy, fun and visual. It is probably best suited for the grade ones, but grades two and three can do it in a little more detail and it will still be suitable. It may be a good idea to add to it, for instance, repeat it with a soda and explain why the same happens and what it is in the soda that causes it.

After you have done this experiment to find out if gas is less dense than water you should be able to answer the following questions:

What makes the moth balls rise after you put it in the water? What makes the moth balls sink again? Is the vinegar and acid? Is the bicarbonate of soda an alkali? What kind of reaction takes place when you mix the two? What is the gas named that is formed?

Before you start your experiment you must formulate your hypothesis, it means you must say what you think is going to happen and what it is you want to prove. Then it is important to use the correct scientific method which includes having a control. Now what is a control? It is the part where you show what happens when you do nothing! Once you have completed your project it is important to formulate your conclusion very clearly.

Another important thing is to always keep your display in mind. Make meticulous notes and take photos of all your steps.

What you will need for this project:

2 Tall straight flasks Water 2 Teaspoons of bicarbonate of soda 2 Teaspoons of citric acid 10 Table spoons of white vinegar A long spoon Food coloring Moth balls Felt tipped pen Stickers Camera

How to do this experiment:

Fill both the flasks about half full of water Keep the one as it is with only water in it and mark it as "A" this is your control Mark the other flask "B" and this is the one that you are going to do the experiment with Add the bicarbonate of soda and the citric acid to the water in the other and stir until all has dissolved Add the vinegar to the same flask and stir it well Color the water with a little food coloring, this is only so that you can see what happens better and you can add the coloring to both flasks Place half the moth balls in your control flask and the other half in the other flask. Observe what happens What is your conclusion?

Now think about this:

Moth balls will sink in most liquids. Why do you think it is the case? Does it happen to the moth balls in your control? What happens in "B?" Why do you think it happens?

Explanation:

The vinegar (an acid) and the bicarbonate of soda (an alkali) mixed, results in a chemical reaction and produces a gas called carbon dioxide and this gas sticks to the moth balls. The gas is less dense than the water and therefore lifts the moth balls to the surface. On the surface the gas escapes and the moth balls sinks again. This process is repeated over and over until all the gas has escaped. In your control there is no chemical reaction and no gas formed so the moth balls sink and remain at the bottom.

This is one of our science fair projects grade one to three that the kids can do all by themselves. It is advisable, though, that they so it with adult supervision to prevent accidents! Remember the moth balls are poisonous and you should wash your hands thoroughly after you have handled them.

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Question by : What is a good science experiment using water for kids? I have a to do a science experiment in-front of my class of 7th graders. I need a cool science experiement that isn't too hard, easy to set up, and will still yet amaze my glass. My project in which I have to do this experiemtn on is based on pirates thats why I wanted a water experiment. So if there is an experiment that has to do with water, pirates ETC. PLEASE HELP! Best answer for What is a good science experiment using water for kids?:

Answer by Corinne
Maybe use the common tornado in a bottle experiment. Pirates deal with storms like hurricanes and the tornado in a bottle deals with water.

â€" [Science]

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