All Science Fair Projects for School Students

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The Metronome of a Chemical Reaction

Objectives/Goals The objective of this project was to test the effect of temperature on the rate of a chemical reaction. I thought that reaction rates would increase with increasing temperature. Methods/Materials Sodium Thiosulfate, Potassium Iodide, Potassium Bromate, Hydrochloric Acid, distilled water, and 2-3 drops of soluble starch were mixed to start the chemical reaction. When the reaction reached a certain point, the solution would turn blue. To compare the speed of the reaction at different temperatures, the time taken to reach the color change was measured with a stopwatch (in seconds). All of the reactants were cooled or heated to the appropriate temperature before they were mixed to ensure accuracy. The experiment was conducted at three temperatures: room temperature (19.5 degrees Celsius), in an ice bath (4.5 degrees Celsius), and in a heat bath (30.5 degrees Celsius). Results The results of the experiment showed a distinct relati

The Magic of Metal Corrosion

Objectives/Goals Analyze the corrosive behavior between metal fully submerged in liquid versus metal partially submerged and determine whether corrosion reacts similarly when using three types of liquid: An acetic acid, a sodium bicarbonate solution, and salt water. I hypothesized that metals fully submerged will have more corrosion and that the metals will react similarly when tested in different liquid solutions, whether partially or fully submerged. Methods/Materials Six-inch strips of aluminum, brass, copper, and iron were cut into two-inch pieces and placed in three different types of liquid: An acetic acid consisting of one cup of full strength white vinegar; a sodium bicarbonate solution consisting of two teaspoons of baking soda dissolved in one cup of distilled water; and salt water produced by dissolving one cup of distilled water with 8 grams of sea salt. Each strip was divided into a 3x5mm hand drawn grid to track and measure the rate of corrosion. Two sets

Agent Sodium Chloride Strikes Again

Objectives/Goals This project focuses on manipulating the electrical conductivity of different solutions via electrolysis. There were three types of water tested: hard, soft, and R.O.(water purified through reverse osmosis). After testing these three types of water, I added approximately 58.443 grams of sodium chloride to each in hopes of increasing their electrical conductivity. My hypothesis was that if I sent an electric current through the previously mentioned solutions, then soft water with sodium chloride added would produce the most hydrogen and oxygen/chlorine gas. Methods/Materials To set up this experiment, I plugged the beaker with the rubber plugs with pencils inserted, propped the beaker on three wood blocks, and filled it with one liter of water. If I was running a test with sodium chloride, I would measure out 58.443 grams of it (to create a 1 mole solution) and mix it with the water in a separate bowl, then pour the solution into the beaker. Next, I con

Steel and Acid Rain

Objectives/Goals We in 8th grade have just started studying acids and pH. I wanted to utilize my limited after-school time to do experiments involving acids and learn practical aspects of effect of acid in daily living. During my research, I came to know that acid rain has an enormous economic impact due to its effect on rusting of metals. The purpose of my science project was to use simple, inexpensive and non-hazardous household materials to study the relationship between acid and rust formation. My Hypothesis were: 1) Model of acid rain water will rust steel wool faster than model of normal rainwater. 2) The temperature will rise when steel wool is in contact with the acids due to the oxidation reaction. 3) The rise in temperature will be higher when steel wool is subjected to more acidic rainwater as higher H+ ion availability will likely speed up the iron oxidation process and hence the rate of rusting. Independent variables were Time & pH; Dependent v

How to Increase the Speed of a Reaction

Objectives/Goals Reaction rate is what determines when bombs go off, and how we digest food. But can you change the speed it occurs? In order to find this out, I took two possible factors, particle size and temperature, and put them to the test. This project will look at the effects of both particle size and temperature on reaction rate. Methods/Materials These factors will be tested with alka-seltzers inside a gas collecting apparatus (air tight bottle connected by tube into a graduated cylinder filled with water). For particle size, 3 trials were done for 4 different particle-sizes (Whole seltzer, Half, Quarters, Powder). Trials were done for particle size by dropping the tablet into the bottle and quickly shutting the cap. For testing temperature I did 3 trials for 3 different temperatures (Room Temperature, Cold, Boiling). Trials were done by pouring the water until the standardized level has been reached, and dropping a whole alka-seltzer into the bottle and quickly

Boiling Point

Objectives/Goals If I boil water, sugar and salt solution which one will have the highest boiling point? How does thermal energy break the molecular bonds? Methods/Materials A pan; Water - 1 liter ( 4 cups); Sugar solution- 1cup of sugar in 1 liter of water; Salt solution- 1 cup of salt in 1 liter of water; A thermometer; A stop watch; Stove. 1. Take one third of water in a pan. 2. Place a thermometer in the pan. 3. Place the pan on a stove. 4.Then turn on the stove and start the stop watch. 5. Check temperature of water every 30 seconds. Continue till the water boils and temperature remains steady for some time. That temperature is the boiling point of water. Repeat the experiment with Sugar solution and Salt solution. Record the temperature every 30 seconds on the table. Thus we can find which liquid has the highest boiling point. Results In my data, at 1 minute the salt solution had the highest, it was 36 degree Celsius.

Fire Burning

Objectives/Goals In my experiment, I burned different kinds of wood with different densities and timed how long they burned. My hypothesis is that the denser the wood is the longer it will burn. My question is obviously "does the density of the wood affect how long it burns." With my results fire fighters and reporters will be able make very realistic guesses as too how long a forest fire will burn and the way that it will burn. Methods/Materials I used four different kinds of wood and I burned them four times each. Poplar, Red Oak, Pine, and Douglas Fur were the different species. I had one independent variable which was the density and two dependent variables, one primary and one secondary. The primary variable was the flame time and the secondary variable was the smoke time. The constants in my experiment were used to minimize the number of confounding variables. After all the densities were found, I soaked them in two fluid ounces of lighter fluid for three

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