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Overflowing ice cube experiment

Fill a glass with water and then add ice cubes so that they are sticking out above the brim of the glass. Make sure all ice cubes are floating in the water.   Observe what happens to the water level when the ice cubes melt. Does the water level overflow?   Explantation This is a classic experiment with intriguing results. Observation reveals that the water will not over flow, even though the ice was initially above the top of the glass.   IF you freeze a glass of water, the ice will rise about the top of the brim because…

The Incredible Rising Mustard Experiment

Discover what happens when baking soda is added to mustard? 1.) Pour some mustard into the clear cup. The amount is not crucial. 2.) Add 1 teaspoon of baking soda to the cup and stir briefly. 3.) Stop stirring and observe   Explanation The mustard will rise in a dramatic fashion due to the presence of vinegar in mustard. The reaction between the vinegar and baking soda will produce carbon dioxide gas, which causes the mustard to rise.   The reaction will continue until all of the vinegar is used up. In this case, the baking soda will be in…

What color is Iodine? Experiment

To demonstrate that iodine is more soluble in oil then in than in water. 1.) Fill the bottle about ½ full of water and add iodine until it is about the color of tea. 2.) Hold it up and slowly add an small amount of oil so that the you can see the clear oil on top of the brown-colored water. 3.) Tighten the cap and shake for about 30 seconds. The two layers will need a few moments to form. The bottom layer will be much lighter and the top will be a beautiful purple color.   Explanation This…

Why do your fingers wrinkle more in fresh water than in salt? Experiment

To discover what causes your hands to get wrinkly in water. 1.) Make a saturated salt solution by dissolving as much salt as you can in a cup of water. Fill another cup with fresh water from the tap. 2.) Submerge one hand in the salt water and the other in fresh water fro 20 minutes. Observer both hands.   Explanation You should notice that your hands gets wrinkly from soaking in freshwater, just like being in the bathtub. However, the hand that was soaking in salt water will not be wrinkly at all! Every cell in the skin of…

Neutral Buoyancy experiments

1.) Fill the cup about halfway with alcohol. 2.) Add several drops of olive oil to the alcohol. They will form distinct little spheres and sink to the bottom. 3.) Add water drop by drop until the balls of olive oil rise and become suspended in the middle of the water-alcohol solution.   Explanation: The olive oil initially sinks because it is denser than the alcohol. However, it is less dense than water. By adding water to the alcohol, the density of the alcohol-water solution is gradually increased, until it becomes equal to that of the olive oil. At this…

FUN WITH TONIC WATER & BLACK LIGHT EXPERIMENT

Objective: TO observe the fluorescent nature of tonic water, and how to quench it.   Materials: * Tonic water (must contain quinine) Clear cup Black light Salt   Safety Precautions: Perform only under adult supervision. Do not start at the black light, as ultraviolet lights can be harmful to your eyes.   Procedure: Completely darken the room and pour the tonic water into a cup under the black light. Add salt to the tonic water, while it is still under the black light.   Explanation: The tonic water contains quinine, which is highly fluorescent compound. Black light gives off ultraviolet…

Reusable Cold Pack experiment

Objective: TO understand the concept of freezing point depression by making a reusable cold pack.   Materials: Quart freezer bag Isopropyl rubbing alcohol Food coloring (Optional)   Safety Precautions: Isopropyl alcohol is poisonous if ingested. Be sure to clearly label the bag “POISON” before putting it into the freezer.   Procedure: Add 2 cups of water and 1 cup of rubbing alcohol to a freezer bag and seal. Place in the freezer overnight. Observe the bag   Explanation The solution in the bag will not freeze, because alcohol has a much lower freezing point then water. Isopropyl alcohol freezes at…

How Disappearing INK works Experiment

Objective: To discover how disappearing ink works.   Materials: * Bottle of disappearing ink – available at magic or novelty stores Link * Clear plastic cup * Seltzer water – or other acidic liquid such as vinegar or lemon juice * Ammonia   Safety Precautions: Disappearing ink is toxic if ingested. Ammonia is also tonic if ingested. Do not inhale ammonia fumes. Do in a well ventilated area.   Procedure: Squirt some disappearing ink on a white shirt. It will turn clear in a short time. Add a little disappearing ink to a clear cup. Next, add a little Seltzer…

SOLUTION OR SUSPENSIONS? experiment

Objective: To differentiate between solutions and suspensions   Materials: Overhead projector Transparent cups Unopened can of clear carbonated beverage Other samples of soda Muddy water   Procedure: Place a transparent cup on the overhead projector. Quickly open the can of clear soda and pour it into the cup. The projected image will initially turn black, then eventually turn clear! Illuminate cups of soda, milk and muddy water on the overhead.   Explanation: This demonstration graphically illustrates the difference between a solution and a suspension. A solution is a homogeneous mixture with only one phase. It will never settle out, and…

LEAF TRANSPIRATION Experiment

Did you know that plants transpire? It’s kind of like people perspiring, but not quite. A simple analogy to help explain the act of transpiration is that a plant transpiring is like a human sweating. Humans sweat by excreting water through pores to cool down. Similarly, a plant goes through transpiration to help carry nutrients throughout the plant and to maintain structure.   Objective: To show transpiration by capturing the water that evaporates through the leaves.   Materials: * A plant * Ziplock bag * Bread tie or tape   Procedure: 1. Place a ziplock bag over some leafs. 2….

WHY IS MUSTARD YELLOW? Experiment

Objective: To discover why mustard has a characteristic yellow color.   Materials: Mustard Ammonia Eye dropper or pipette Clear plastic cup Vinegar   Safety Precautions: Perform this experiment only under adult supervision. Wear safety goggles. Ammonia is very poisonous. Do NOT eat the mustard after adding ammonia. Do not smell or inhale ammonia fumes. Do this in a well ventilated area.   Procedure: 1) Pour a little mustard in the clear cup. the amount is not crucial 2) Add ammonia drops until you note a color change 3) Add vinegar drops until the mustard returns to its original color. 4)…

MAKING A FLOW MOTION TUBE EXPERIMENT

Objective: To observer interesting flow patterns in a liquid.   Materials: Liquid hand soap containing glycol stearate, not glycol distearate (some, but no all, brands of Soft soap will work) 20oz plastic soda bottle, or the suitable container Food coloring Water   Procedure: Fill about one-fourth of the bottle with liquid soap. Add 5 drops of food coloring. Slowly fill with water to avoid suds. Fill to brim. Screw cap on tightly and shake until well mixed. Invert the bottle to observer and interesting swirling pattern.   Explanation: The interesting patterns that develop when your bottle is inverted are due…

ELECTRORHEOLOGICAL FLUIDS and balloon Experiment

Materials: Cornstarch Vegetable oil Balloon Plastic cup   Procedure: Add 1/4 cup (60ml) of corn starch to 1/4 cup (60ml) of oil in a cup. Stir thoroughly. Rub a balloon in your hair. Now slowly pour the oil-cornstarch mixture into another cup. As you are pouring, bring the charged balloon near the stream of fluid.   Explanation When you mixed the cornstarch and oil together you created a smart material called an electrorheological liquid. That is, a liquid that gets thicker in the presence of an electrical field. You created a field of electricity (called static electricity) by rubbing the…

Hybrid Pasta Rocket Engine Experiment

The oxygen flow is generated from the hydrogen peroxide. The hydrogen peroxide molecule looks a lot like the water molecule, only it has an extra oxygen atom. When you add the yeast to the peroxide, it acts as a catalyst and breaks off that extra oxygen, which bubbles up and out of the hole in the lid.   It’s important that you don’t screw the lid onto the jar – just rest the lid (without the screw-on ring) on top of the jar. Since there’s no nozzle on the end of the pasta, the fluid is going to be pretty…

Iodine clock reaction Chemistry Experiment

I’m going to add the chemical solutions into 2 cups which I marked A & B. both cups I already pour 40 ml of distilled water, then in cup A I add (2) small scoops of Sodium Iodate.   This experiment comes in a kit with the details where to buy it in the description below.   Now for cup B add (1) scoop of sodium sulfite and (4) scoops of Citric acid. Then add 8 drops of Starch solution. Stir both cups very good until it all dissolves.   Now to make the magic happen. I’m going to Pour…

Two Stage Film Canister Rocket experiment

You can do one stage Rocket or a Two Stage Rocket. It took me over 30 tries to get it to get the Two Stage Rocket to work. This was the hardest experiment I have ever done!. I still don’t think NASA will hire me even after my great success. : )   Caution: if it does not launch, wait at least thirty seconds before examining the canister. Usually the cap is not on tight enough and the carbon dioxide has leaked out instead of building up.   The water dissolves the Alka-Seltzer tablet and starts a chemical reaction, which…

DOES ICE MELT FASTER IN FRESH OR SALT WATER? Experiment

PROCEDURE: Put your favorite food coloring in a ice cube tray with water and freeze. Fill one transparent cups up with tap water, and the other with tap water and add salt. Observe the rate of melting of each ice cube.   EXPLANATION: I love the results of this experiment as it really surprise me. When I put salt on a ice cube it melts the ice very fast and when I saw this I could not believe it. The ice cube in the salt water melts much slower then the one in the freshwater.   In the salt water…

Film Canister SUB – powered by Alka-Seltzer experiment

PROCEDURE: 1) Drill a small hole in the lid of the film canister using a drill 2) Add just enough pennies to the canister so the it will sink. Remove one of the pennies, so the canister will now float. 3) Fill the canister with water, drop in a small in a small piece of the Alka-Seltzer tablet and then replace the lid 4) Quickly drop the canister, lid side down into the cylinder/tank that is full of water. The canister should sink to the bottom, and in a short time it will rise back up to the top. 5)…

Milk Experiment

Is there Plastic In milk? Well, sort of. You made a substance called CASEIN. It’s from the latin word meaning “cheese.” Casein occurs when the protein in the milk meets the acid in the vinegar. The casein in milk does not mix with the acid and so it forms blobs.   The milk will boil and being to form tiny lumps (called curds) in a clear liquid (known as whey…is the Little Miss Muffet rhyme sounding a bit familiar right now?).   The curds will form a blob at the bottom of a clear liquid. The blob is actually fat,…

Drops of water on a PENNY experiment

Surface tension give water some amazing properties, use them to see how many drops of water fit on a penny. I was able to get to 25 & 31 drops. How many can you get? If you don’t have a penny any small coin.   Experiment 1) Wash and rinse a penny in tap water. Dry it completely with a paper towel. 2) Place the penny on a flat surface. 3) Use an eyedropper or pipette to draw water and, carefully, drop individual drops of water onto the flat surface of the penny. 4) Keep track of the water drops…

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