Science Experiments: Page 9

Aqua regia (königswasser in German) is a very corrosive liquid made from a mixture of nitric acid and hydrochloric acid (1:2 - 1:3). This chemical mixture is so corrosive that it can even dissolve gold, and that's what you'll learn about in this video.

PopSci has compiled an amazing list of 30 college labs that would tempt anybody to re-enroll. If you know any high school juniors or prospective grad students, pass this along. They just might reconsider their initial choices.

Calling all alchemists, it's time to make magic. Here's another lesson from our favorite mad scientist, Nurdrage (previously, DIY glow sticks & pencil lead levitaton).

In this tutorial, we learn how to get a coin out of water without getting wet. First, place the coin inside of water on a plate. Next, use a lighter to light a piece of paper on fire, then place the paper inside the water cup and let it smoke and burn. Next, push the cup down onto the plate, and it will soak up all the water that was on the plate! Then, your penny will be dry and you can pick it up without getting wet! This is a great trick to show your friends and works easily without any...

Chris tells us how to understand what science is and why it's important. If you didn't have science, you wouldn't have any technology! This includes televisions, cell phones, portable devices, and everything else that science relies on. Basically we would be living like we were in the stone age again! Science impacts so many different parts of our lives, and although it's not all the same type of science, it all matters. Take a few minutes to think about what life would be like without having...

In this video tutorial, viewers learn how to suture. Begin by lifting up the skin on the far side of the laceration with the tissue forceps and insert the needle with some distance far away from the wounded edge. Then lift up the skin with the near side laceration and mirror the course of the needle. Now move somewhat to the right of the subsection of this stitch, parallel to the incision line. Place the second subsection of the horizontal macro-suture like the first part. But this time from...

In a previous Nurd Rage video (here), Dr. Lithium showed you that pyrolytic graphite was diamagnetic, and that it could be stably levitated over magnets. It was repelled by a magnetic field, and this repulsion was strong enough to levitate it. In this science video tutorial, you'll learn how to levitate plain old pencil lead this time.

The anonymous doctorate of science, Nurdrage, is back with another fascinating HowTo (previously featured, glow sticks). Dr. Lithium's latest video demonstrates how to practice diamagnetic levitation using common household pencil lead and magnets.

Sometimes a human-made representation just can't beat the real deal. You may be convinced once you watch these science-art videos, a collaborative project titled Morphologics, by marine biologist Colin Foord and musician Jared McKay.

You may think of sugar as purely a sweet ingredient meant for baking, but it can actually be a deadly explosive, according to PopSci's Gray Matter:

If you have some dry ice, try this cool science experiment out. It's so easy, you have to try it, at least once! You just need a chunk of dry ice and some metal coins, like a half dollar (which is comprised of copper and nickel).

In this video tutorial, viewers learn how to make a plastic substance. The materials required for this experiment are: 1 bowl of milk, 1 cup of vinegar, pot and mixing spoon. Begin by heating the milk in the pot and heat it at medium heat for several minutes. Then pour the milk into a separate bowl. Now add the vinegar into the milk and stir it. Continue stirring until it forms into a solid mixture. Then drain the liquid. This video will benefit those viewers who enjoy experimenting, and would...

WonderHowTo favorite (and pal) NurdRage brings us another great science tutorial. Making glow sticks at home is not necessarily cheaper, but it's a great science project. Check out the video below to learn not only how to make the glow sticks, but also all about fluorescent dyes (and why Mountain Dew will not do the same thing).

Utterly mind blowing CC-licensed photography of the periodic elements by Wikipedia user alchemist-hp.  Beautiful examples below, click through for the whole project (in German).

In what appears to be some kind of hybrid science-art project, Japanese researchers have discovered a method for rendering a dead animal's body completely transparent, in order to dye the skeletal system. Simultaneously creepy and beautiful.

In this tutorial, we learn how to use radiation detection equipment. To use the dosimeter, you will remove the cap, then place the pipe on and push down on it. A light will come on, and you can use the knob to zero it. When you look in, you will be able to see it's measured in Roentgens per hour. When you are done using this, zero it again. Next, you will have a CD Geiger counter which has three positions for the knob. Whatever it is set on, you multiply the reading by that number. If you turn...

In this video tutorial, viewers learn how to do a liquid nitrogen experiment. The materials required for this experiment are liquid nitrogen and film canisters. This task is very easy, fast and simple to do. Begin by pouring the liquid nitrogen into the film canisters. Then quickly place the film canister lids on. The liquid nitrogen will eventually become a boiling gas and expand about 700 times. Because of the expanding, the pressure will build in the canisters and result in popping lids....

In this tutorial, we learn how to create an erupting volcano. First, take ammonium dichromate and pour it into a clear plastic dish. Next, grab a blow torch and blow it onto the material. This will make a substance that is black and looks like ash. This will get messy, so make sure you have a newspaper or cloth underneath the dish. Eventually, the material will catch on fire so you can remove the blow torch, then the ash will fall all around the volcano and the sparks will fly out of the middle...

In this tutorial, we learn how to grow bacteria with agar and petri dishes. First, prepare your agar by swirling it and then pouring it into an open petri dish. Next, close the cap to the petri dish and let it sit for an hour. Next, grab a q-tip and swab it on a surface you prefer. After this, swab it onto the petri dish and let it sit for around a week. When you come back to the dish, you will see all the bacteria that has grown! This is a great science experiment to do for children in school...

You've manage to get your hands on some ruthenium, and now you want to destroy the hard silvery-white metal of the transition series. Well, you're going to try all kinds of ways to dissolve this odd metal, but the only successful way to dissolve ruthenium is with a common household cleaner… bleach.

Here at WonderHowTo, we certainly have an affinity for outer space-related topics, so I couldn't pass up this horrifying video of a man who just barely survived a simulated space vacuum.

My mind is playing tricks on me!

In this tutorial, we learn how to make sodium acetate. First, pour a bottle of vinegar into a large pot on a stove. Next, add in baking soda slowly until it is completely dissolved into the vinegar. Stop adding the baking soda once the mixture doesn't bubble anymore. Now, turn the heat to medium and let the mixture boil down until you get a rich gold color. Now, grab a box of activated filter carbon and pour it into the bowl with vinegar and baking soda. When finished, mix the product together...

In this Education video tutorial you will learn how to make smoke or fog rings with a rubbish bin. This is really very easy and simple to do and takes practically no time. For this you will need a smoke machine like the ones used in night clubs, a rubbish bin, piece of oil cloth and a strap. Cut out the bottom of the bin and cover the top of the bin with the oil cloth and strap it up. When you push on the oil cloth, air will go out of the hole at the bottom. Now fill the bin with smoke from the...

In this tutorial, we learn how to find the North Star. To find this, measure the angle distances on the sky, while using your hand stretched out at arm's length. For the angles, three joined fingers make 5 degrees and a fist makes 10 degrees. You can make 15 to 20 degrees using your entire hand. Polaris is in the center of the sky, but it is not the brightest star there is. If you can find the Big Dipper, you will be able to find the North Star because it's in line with this. By using this...

In this tutorial, Tony Vo teaches us how to cut a bottle. You will need: a glass bottle, yarn, lighter, sink of cold water, and acetone or alcohol. First, take your glass bottle and tie a piece of yarn around the part you want to cut. Wrap the yarn two times around, then tie it tie it tightly. Now, take the acetone and drop it onto the yarn until the entire piece is saturated. Next, take your lighter and burn the yarn on the bottle. As soon as the flames die down, place the bottle into a sink...

Are you much for science? Cytoplasm. Nucleus. Endoplasmic reticulum. Organelle. These words might sound alien, but breaking down the parts of a cell and their functions will help you remember. This is one of the best ways for cell identification, and it's perfect for science class studying.

For some, vodka, tequila, and whiskey are key ingredients to a good time. But, take a sample, dry it out, magnify x1000, and you've got yourself an unexpected work of art. Prints below by BevShots.

Mr. O shows his audience in this video how to make oobleck, a slime-like substance which has a variety of unique properties. For this project, you will need a mixing bowl, food coloring, corn starch, a measuring cup, and water. First, color the water with food coloring to a color which is much darker than the color you would like. You will need the correct ratio of water to cornstarch, in a 1 to 2 ratio. Add some water to the bowl and add the cornstarch, then add the rest of the water. Finally,...

To make a snow cone with nitrous gas, as an experiment, you will need the following: liquid nitrogen, protective gear, a bell jar, and a dish to hold the liquid nitrous. While wearing protective equipment, pour liquid nitrogen into a dish. Place it in a bell jar. Now, turn on the vacuum, until it freezes. The snow only lasts for a small bit of time, because it melts immediately upon having contact with the air. When you turn the vacuum off, it will immediately melt. When you turn it...

WonderHowTo science geek favorite, NurdRage, completely shatters a human heart using liquid nitrogen. Now, what I wanna know is... and I'm really asking... where the hell do you get a human heart?

The price of TLC plates can add up. See how to make thin-layer chromatography plates (TLC plates) for a few cents each that are as good as commercial TLC plates that sell for a dollar or two each. You can use these home-made TLC plates the same way you'd use chromatography paper, but the plates provide sharper separations and require far less analyte. They also lie flat, and are much easier to store for later reference. For more information, including step-by-step instructions, and to get...

A (harmless) explosion a day keeps the police away. Indulge your rambunctious little boy in some scientific fun by helping him build an overhead water rocket launcher, which shoots recycled plastic bottles.

Playdough is one of the best types of toys that any kid can play with. Not only is it flexible, but it's also non-toxic. In this video tutorial, you'll find out the recipe for making your own homemade Playdough from scratch. It's easy to do and will save you money. Good luck!

DARPA and Dallas's Southern Methodist University are collaborating on a super high tech camera, capable of scanning eyeballs in a moving crowd.

Need to know how to convert between moles, grams and particles for chemistry class? It's simple once you know how to go about it and this free video chemistry lesson presents a careful overview of the entire process. For more information, and to get started converting between moles, grams and particles yourself, watch this helpful study guide.

The egg drop has become a sort of rite of passage for gangly fourth graders as they embark on their first journey into physics and math before they approach these subjects again later on in middle school and high school.

Researchers Hiroto Tanaka and Isao Shimoyama (of Harvard University and University of Tokyo) have constructed a tiny replica of the swallowtail butterfly. The crudely made model uses just balsa wood, rubber bands, and a steel wire crank. The goal is to better understand the biomechanics of butterfly flight.

Attention aspiring scientists and chemists! Learning to balance equations and finding it to be a bit rough? This video is here to help. Learn the basics of chemistry with help from this video on how to balance equations with C (Carbon), H (Hydrogen), and O2 (Oxygen).

Get your kid's creative juices flowing during the Halloween holiday by trying out this great science experiment with Steve Spangler. Get the inside secrets on how to create smoke rings that are sure to cast an eerie feeling over your home. Get your science on this Halloween by following these simple instructions on how to make smoke rings with your kids!