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Drops of water on penny

How Does It Work? Surface tension gives water some amazing properties. The cohesion and surface tension of water becomes apparent when the drops of water you add to the penny reach the penny’s edge. Once the water has reached the edge, you begin to see a bubble or dome of water forming on top of the penny as you can see here in the video. The bubble shape is a result of the water molecules clinging to one. I was able to get 30 drops on a penny. Let me know how many you were able to do?  

Iodine Clock reaction

First you Make two chemical solutions and mix them together. Wait a few seconds, then wow! It will suddenly change colors. This is the famous iodine clock reaction in an easy-to-use kit. Change the concentrations or temperature and change the delay for the color change. Adult supervision is Required.  

Tornado Tube experiment

The Tornado tube Connector is a plastic adapter fitted for two plastic soda bottles to be held together to create a vortex within one of the bottles. It works by flipping and then spinning the bottles in such a way that the water is now in the top bottle and the air begins to replace the water in the top bottle in a vortex shape.  

Aluminum boat buoyancy challenge experiment

Take the Aluminum boat buoyancy challenge. Start with a 4″ by 4″ piece of aluminum foil. Then use that piece to make a boat that will hold the most pennies as possible without sinking. See which designs hold the most. My niece Amber was able to hold 20 pennies. This challenge will make you explore how the size affects how much weight they carry and how this relates to the density of water. Try this with salt water to see if you can hold more pennies?  

Surface Tension Bubble Breaker Experiment

Why a pot of boiling water will not boil over when pasta is added if olive oil is added to the water beforehand? Water molecules are polar and they strongly attract one another at the surface of the water. This makes the surface harder to pierce or expand. Pure water doesn’t foam when it boils, because it’s hard to stretch the surface out to make bubbles. The scientist is called “surface tension”.   Now drop some pasta in the pot. As it cooks, organic materials are released into the cooking water. Some of these organics materials have hydrocarbon parts that…

Magic Water Flower Experiment

Your Magic Water Flower is powered by scientific phenomenon called Capillary action. Thanks to Capillary action, paper absorbs water very rapidly. When the paper gets wet, it swells which causes the folded petals of your Magic Water Flower to open up.   So what does all this have to do with your Magic Water Flower? Paper is made of tiny wood fibres which are tightly interwoven providing amazing strength and a beautiful writing surface. Even in high quality paper, there are billions of tiny little gaps between the fibres.   When paper comes into contact with water, the amazing power…

Soap Powered Boat Experiment

The movement of the soap powered boat has combination of three principles.   Surface Tension 1) All liquids have a little thing scientist call surface tension! Water molecules are strongly attracted to each other and stick close together. This creates a strong but flexible “skin” on the water’s surface, which is able to support small insects and materials like our paper boat on their surface.   2) Isaac Newton’s third law of motion says for every action there is an equal and opposite reaction. The movement of the soap provides a ‘pushing force’ backward into the water surface as the…

Water Bottle Flip physics

Angular momentum + Centrifugal force + water bottle= SUCCESS   I’m sure any kid in school that doesn’t live in a snow cave, has try the water bottle challenge.   Also known “The flip,” as it will henceforth be known, all begins with a flick of the wrist, generating a specific force called angular momentum,   Angular momentum is very similar to the classical sense of momentum, where an object moving will not change its motion unless acted upon by another force. With angular momentum, the same concept is applied to rotation.   As centrifugal force keeps the water at…

Cartesian diver Experiment

The Cartesian diver, named after French philosopher and scientist René Descartes, works because of several factors.   When you squeeze the bottle, the pressure on the water pushes on the pocket of air inside the pipette. You can see the level of the water in the diver rise as you squeeze the bottle. As the water level inside the diver goes up, it compresses the air above it into a smaller space. This demonstrates that gases are considerably more compressible than liquids.   As the water level rises in the diver, it becomes less buoyant and the diver sinks. As…

Whiskey & Water Experiment

Most people think of this as a trick, but their is Science behind this. Whiskey is lighter than water (the better the whiskey, the better this works). The lighter whiskey will slowly trickle upwards to the top of the water’s shot glass, while the water trickles down. It’s a really neat looking effect! After 10 minutes(my video was fast forward), the two drinks will have completely swapped places.  

Making a Rainbows Experiment – Activity

A rainbow displays the colors red, orange, yellow, green, blue, indigo and violet in respective order. Other things as well just like mist, dew and spray can cause its formation. To explain it further, when light strikes the surface of a water drop, it changes speed thus causing it to bend.   It is refracted as it enters the water and then refracts again as it leaves the droplet. The outcome is light being reflected in varying angles, creating a rainbow.   Light travels in varying waves where the length of each would depend upon the color. When light retracts,…

Sink of Float Coke and Diet Coke Experiment

For context, the Food and Drug Administration recommends that adults consume a maximum of 50 grams of added sugar per day. The World Health Organization recommends 25 grams of sugar per day, half that. Have a can of Coke and your done for the day.   And why are we talking about grams? “Americans use teaspoons,” said Jim O’Hara, the director of health promotion policy at the Center for Science in the Public Interest in Washington. “We’ve argued they should put it in teaspoons.”   This important bit of information is your key to converting grams into teaspoons. Four grams…

FASTEST Rubber Chicken Bone Experiment

If you soak chicken bones in vinegar, the vinegar will react with the calcium in the bones and weaken them so that they will become soft and rubbery, as if they had come from a rubber chicken. Vinegar is a mild acid, which breaks down calcium. CLR just does it a lot faster.   It is the calcium in your bones that makes them hard and strong. As you age, you may deplete the calcium faster than you replace it. If too much calcium is lost from your bones, they may become brittle and susceptible to breaking.   Exercising and…

Straw Wrapper Wiggle

When drop water on the wrapper, the water molecules will try to get as close as it can to the surface of the paper. And since water molecules are also attracted to one another, it will drag its friends along. This is called capillary action and is why the water travels along the wrapper. The wrapper wiggles and stretches out as the water moves because as its fibers absorb water they swell and straighten out.  

Water to Cranberry juice Experiment

Start off with ….Out of sight of your audience, add about one teaspoon of sodium carbonate powder (Washing Soda) which is Baking Soda that you preheat to 400 degrees (204 c). Then pour in 16oz (pint) of water in a pitcher and mix until solution appears clear. This will be the “plain water”. With two clean cups, add about 10 drops of phenolphthalein solution (pH indicator) to the bottom of one glass. This will become the “Cranberry juice” glass.   Now In front of your audience, pour some of the “plain water” into the empty cup. Next, say some magic…

Steam Powered Vacuum Experiment

Fill a glass bottle with enough water so when its on its side it won’t spill out. Then microwave for a 1:30 on high. The bottle is going to be VERY HOT! Use caution and use hot pads. Make sure to wear safety glasses!   Already with a bowl of water on the table, pour the water out of the bottle into the bowl, then put the tip of the bottle into the bowl of water straight up. Hold on tight as the vacuum has a huge amount of force.   When we microwave the bottle and water it becomes…

Pick up a Ice cube with a string and salt experiment

When salt is sprinkled over ice it melts. However, when it is used in such a small amount, like in our experiment, the water around the ice freezes again quickly, as salt lowers the freezing point of water to below O degrees.   This means that the string gets trapped as the water around it refreezes, making it stick to the ice.   A great example of how road crews use salt is they put salt on the roads in the winter to prevent roads from getting icy. The salt lowers the melting point of ice and stops roads from…

Boiling Water with Ice Experiment

Icing the part of the bottle with air in it slightly lowers the pressure, because the air molecules rattle around less when they’re colder. Thats what causes a little bit of water to boil, until the pressure builds back up.   There’s a much more important effect. The bottle mostly has water vapor, not air, up in the top part of the bottle. Icing it cools it enough so that there the vapor condenses back from a gas to a liquid. That lowers the pressure a lot, causing more boiling. So with the main part of the bottle is very…

Pepsi (Coke) and Milk Experiment

The reaction of phosphoric acid to proteins in the milk – they are cut and causes a substance to be deposited in solid form from a solution.   It is a reaction of the Phosphoric Acid contained in the soft drink to the milk. Phosphoric Acid molecules attach to the milk giving them more density and separate out while the remaining liquid that makes up the milk and soft drink now being lighter floats on top. The solid matter is basically milk that has been curdled by the addition of the more acidic soda.   Both items are acidic but…

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