Hot Science Experiments Posts

How To: Perform a cool water heat conduction experiment

This is a cool science experiment to show what a great heat conductor water is. You'll need some balloons, a candle and some water. Check it out and be amazed! Common sense tells you that it's impossible to boil water in a paper bag, but this classic parlor trick was a favorite of the Victorian magician. The real difficultly in performing this effect is making it look harder than it is! As you might imagine, the secret lies in yet another amazing property of water - it's ability to conduct he...

How To: Make a dye-sensitized solar cell with titanium dioxide and anthocyanin

Discover the power of raspberries! Literally. In this NurdRage science video, learn how some crushed raspberries and some titanium dioxide (TiO2) can create a powered dye-sensitized solar cell. Inside a raspberry is something called anthocyanin, which is a flavonoid pigment. Commercially purchased solar cells are way more powerful than this DIY solar cell, but with a little improvement, who knows. Nurd Rage also lets you know how this works.

How To: Experiment with circular motion

This video shows various experiments with circular motion. In Dr. Carlson's Science theater he uses water, a lit candle, and a piece of paper to show the ways that circular motion causes gravitational pull. The water in a glass doesn't spill as it is spun around 360 degrees in a circle, even upside down. The flame on the candle was pulled toward the center when spun around. The piece of paper becomes a paper saw and was able to cut wood when spun. He not only demonstrates centrifugal force wi...

How To: Build a potato battery

Like a lemon, a potato can produce electricity. This science experiment was prepared by Ebtisam Al Anzoor and demonstrated by Mustafa Daif. The electricity is proven using an analog micro ameter. The positive is copper from a penny or copper coin while the negative is a galavanized nail. The potato releases a charge and is further proven when it is connected to a calculator. You can daisy chain the potatoes for a greater charge.

How To: Make Water Droplets "Levitate" on Water (Using Vibrations)

You can take some really awesome photos of water droplets if you've got a fast enough camera (and flash), but water drops aren't just spectacular as photographic subjects—you can also make them a part of the photographic process by using a water drop as a DIY projection microscope and even a macro lens for your iPhone. But as useful as a water drop can be, it's still way cooler when they're in front of the camera (as the subject). Recently, researchers from the National Autonomous University ...

How To: Make maganese heptoxide (permanganic acid)

This video tutorial is in the Education category which will show you how to make manganese heptoxide (permanganic acid). This procedure is extremely dangerous. Manganese heptoxide is an extremely powerful oxidizing agent. It has the ability to set fuels on fire from mere contact. Get an old dish and put a spatula full of potassium permanganate on it. Add a few drops of concentrated sulphuric acid. A green liquid is formed which is the manganese heptoxide. Now you can add any fuel like butanol...

How To: Light candles with a microwave oven

Say you're hosting a birthday party and the birthday girl's cake needs to be lit up, but you've just run out of matches. What to do? While you can certainly go to the store and purchase more, doing so would take at least half an hour (an eternity to wait for little kids), it's probably easier to make a flame with what you've got at home.

How To: Make TCPO (for making glow sticks)

How to make TCPO or bis(2,4,6-trichlorophenyl) oxalate, used in glow stick reactions. WARNING: This procedure should only be performed by, or under the direct supervision of, an experienced chemist. Please refer to the material safety data sheets of all chemicals for their hazards. Synthesis must be performed in a fumehood.

How To: Take an acid and base to make salt

In this tutorial we learn how to take an acid and base to make salt. To start, you will first need to take an acid of your choice, this can be something like vinegar. After this, you will combine the acid with a base and then wait for it to react. Once it starts to react, gases will release from them and you will end up with some salt! Be sure to put a cap on the container while the reaction is happening. This will allow the reactions to come together and the gases to react. Have fun and do t...

How To: Make a super magnet compass

Check out this instructional science video that shows you how to make a super easy, super magnet compass! You will need the following materials: a bucket of water, a pen, a knife, a foam tray, and a magnet. Make your own compass by following the simple instructions in this science tutorial video.

How To: Tell if an egg is raw or boiled with Krampf

You can easily tell if an egg is raw or hard boiled without breaking the shell, as long as you know a little science. This experiment uses physics to show how if you spin an egg you can tell if it's insides are viscous or solid! Thanks Happy Scientist Robert Krampf for this great tutorial on the science of eggs and physics of rotation.

How To: Make H2O and CO2

Baking soda and vinegar chemical reaction that results in H2O and CO2. More demonstration than instruction, this video does show you the grade school experiment of putting vinegar and baking soda together. Make H2O and CO2.

How To: Change the physical properties of yellow sulfur

In this tutorial, we learn how to change the physical properties of yellow sulfur. First, take a heat proof water glass and add in 1 teaspoon of sulfur powder. After this, heat the glass on a low flame for a few minutes. After this, the sulfur will start to melt and turn a reddish color. Now, pour the sulfur into some cold water after it's all the way melted and watch the reaction that is occurring. Once cool, you will be able to pick up the sulfur from the water and play with it, although it...

How To: Make a ferro fluid

In this video, we learn how to make Ferro fluid. This is a magnetic fluid that you can easily make at home. To do this, you will need: laser jet toner, rare earth magnet, and some vegetable oil. Now, pour the toner into a cup (50 ml), then put 2 tbs of vegetable oil into this cup as well and stir it together until you have a thin consistency. Now, transfer into a smaller jar so you can handle it easier. Now test this fluid by taking the earth magnet and putting it to the bottom of the jar. No...