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Easy Elementary Science Projects: Cleaning A Copper Coin With Lemon Juice

This experiment is another of our easy elementary science projects that uses lemons or lemon juice. We are going to use lemon juice to react with the copper oxide and to remove it in that way. When a copper coin is exposed to the air it reacts with oxygen in the air to form copper oxide that gives the coin a dull appearance.

What you need for this easy elementary science project:

• 4 Tablespoons of lemon juice
• 2 dull copper coins
• A glass
• Water
• A soft cloth
• A camera

What you have to do for this project:

1. Take a photo of your coins before you start, making sure they are both more or less the same in color (dull)
2. Pour the lemon juice into a glass
3. Drop the coin into the lemon juice
4. Leave the coin in the lemon juice for about 5 minutes
5. Remove the coin from the lemon juice, rinse it clean and dry it with a soft cloth
6. What has happened?
7. Take a photo of both coins next to each other to show the difference.
8. Explain what has happened.

Doing easy elementary science projects are a lot of fun. If you want to make very sure you are following the proper scientific method it may be a good idea to get a good science fair project e-book. I have found Science Fair Projects Made Easy to be a very good one; you may want to have a look at it.

For more easy elementary science fair projects you can visit our Easy Science Fair Projects Blog And our Easy Science Fair Projects Website.

Examples Of Science Fair Projects: Bread Mold Experiment Revisited

One of the most well known examples Of Science Fair Projects is the bread mold science fair project. This experiment can be done in many different ways and here is one of them. As with all examples of science fair projects, the most important part is that you follow the correct scientific method and that you must understand what you are doing and why you get the results you get.

Your scientific method starts with stating the purpose of your experiment, in this case to determine the conditions where mold will grow on bread. Then you move on to your hypothesis, that is the formulation of what you think will happen and then you move on to your experiment etc. For more on scientific method I recommend an e-book such as Science Fair Projects Made Easy. In this e-book you will find all you need to do a winning science fair project. For more examples of science fair projects, you can also visit Easy Science Fair Projects.

Another thing you need to know before you do the bread mold experiment is what the mold actually is. Molds are microscopic plants that are everywhere and like all plants they need special conditions to grow properly. You are now going to find out what some of these conditions are.

CAUTION: do not touch the mold as you may be allergic to it.

What you need for this experiment:

• 4 Slices of white bread
• 4 Slices of brown bread
• 8 Small sealable plastic bags
• A little water
• A magnifying glass
• A pen
• A note book
• A Camera
• 8 Adhesive labels

How to do this experiment:

1. Place one slice each of the white and the brown bread in a plastic bag, seal the bags and mark both. Mark one #1a and the other#1b.
2. Now you place these two bags in the fridge.
3. Place one slice each of the white and brown bread in a bag, seal it, mark it #2a and #2b. These slices will be your control.
4. Sprinkle the remaining 4 slices of bread with water but do not soak it.
5. Now you take one slice brown and one slice white bread and rub it on the kitchen floor without tearing it, so work carefully.
6. Place these slices of bread in bags that you mark #3a and #3b.
7. Rub the other two slices of bread on another kitchen surface such as the table or a cupboard. Place them in a bag and mark them #4a and #4b.
8. Now you place all your bags, except for the ones in the fridge, in a closet.
9. Every day, take out all your samples, have a look at them with your magnifying glass, make notes of what you see and take photos for your display.
10. Keep this up for at least a week.
11. What happens?
12. What is different in every sample?
13. Can you explain it?
14. What are the conditions that produced the most mold?

Make very careful notes and take enough pictures for your display.

For more examples of science fair projects you can visit Easy Science Fair Projects.

For more examples of science fair projects you can visit Easy Science Fair Projects.

This is one of our examples of science fair projects that is very easy and are suitable for elementary school kids. We are going to use sand to represent the land and water the ocean. It is going to show us why temperatures close to the sea is more moderate. Winters close to the sea tends to be milder than inland. Humidity can also influence how hot it feels. In more humid conditions it feels hotter, even though the temperature is the same.

Now on to our measuring temperature experiment

What you need for this experiment:

• Sand
• A jug of water
• Two bowls
• A thermometer
• A note book
• A pen

How to do your science project:

1. Pour water into one of the bowls and sand into the other bowl. It is not necessary to measure the quantities exactly it must just be more or less the same quantity.
2. Now you have to place the two bowls in a cool place together.
3. Leave them there for a few hours.
4. Measure the temperature of both, make sure it is the same otherwise leave it for a while longer until they are the same temperature.
5. Make a note of the temperature.
6. Now you have to place both bowls in a sunny and hot place for about two hours until they are very hot.
7. Measure and record the temperatures of both bowls and make a note of it.
8. Put both bowls in a cool place indoors.
9. Now you have to measure the temperatures of the water and the sand every 15 minutes and write it down in your not book.
10. You should notice that the sand cools down much faster than the water.
11. You can also dip your hands in both and feel the difference. You can make a note of it as well but, of course your real evidence is not what you feel but the temperatures you recorded.
12. Why is it that there is a difference?
13. Where does the heat come from?

This is a very easy science fair projects and is also one of our examples of science fair projects that is very suitable for homeschooling. If you need more examples of science fair projects, you can visit Easy Science Fair Projects.

Examples Of Science Fair Projects - Air Pressure And Air Weight

Get more Science Fair Projects at Easy Science Fair Projects

This science project is one of our examples of science fair projects where you actually proof two related characteristics of air. You will prove that air has weight and that, because of the weight, air pressure is strong enough to bend a can. We are going to use the principle that as air heats up; it has a greater volume and if it is in a container some of the air will escape from the container. Then by screwing a top on the container we are going to prevent the air from going back in when the container cools down.

CAUTION: This example science fair project must be done with adult supervision as heat is used.

What you will need for this experiment:

• Large container
• A can with a screw top (you get cans of olive oil that will be the ideal can)
• Water
• Stove
• Oven mitts
• Ice
• Dish cloth
• A scale
• Note book
• Pen
• Camera

How to do this science experiment:

1. For your display, it is a good idea to take a photo of the can in its original state.
2. Fill the large container with water and ice and put it to one side until you need it.
3. With a finely calibrated scale, weigh the can with the screw top on.
4. Make a note of this weight.
5. Remove the screw top.
6. Put the can on the burner on the stove.
7. Heat the can until it is very hot.
8. Using the oven mitts, remove the can from the stove and, working quickly, screw the top on the can and place it in the cold water.
9. Observe what happens, write it down and take a photo.
10. When the can has cooled down, wipe it dry and weigh it.
11. Make a note of the weight and take a photo.
12. What has happened?
13. Why do you think it happened, remember we said in the beginning that we are going to prove two things?

What happens is that the air pressure bends the can. Why can we say that? What did we do to remove air from the can so that the air pressure on the outside is more than in the inside?

The other thing that happens is that the can now weighs less. Why is that? Think of what we have done with the air in the can.

This is just one of our many examples of science fair projects. For more fun and easy examples of science fair projects visit our site Easy Science Fair Projects.

Go to Easy Science Fair Projects Now.