Hot Science Experiments How-Tos — Page 3 of 30 « Science Experiments

How To: Make an acetylene explosion

A demonstration of the explosive potential of even a small amount of acetylene mixed with the right amount of oxygen. Watch to learn how to do this yourself. Make sure to wear goggles and stand at a safe distance when making your own acetylene explosion.

How To: Make nitrogen triiodide

Learn how to make nitrogen triiodide (NI3), the main ingredient of the small, paper-covered parcels that you throw at the ground to make a snapping noise, with household chemicals and items. This chemical is very unstable, so please exercise caution.

How To: Make your shampoo leap with the Kaye effect

Scientists of the University of Twente in the Netherlands won a prestigious place in the 'Hall of Fame' of videos about fluid-in-motion. They have made a video of leaping shampoo, in which they explain the so-called Kaye effect. Scientifically interesting, but also of great aesthetic beauty! Get out your shampoo and try it yourself.

How To: Do this quick foot experiment to trick your brain

This week's experiment has made the rounds through the Internet as a strange trick, but there is science here too. We are going to use the science of complex systems to confuse your body. To try this, you will need:

How To: Make a light board

Looking for a great idea for a science project? In this video series you'll learn how to build a battery-run light board which can test the electrical conductivity of various objects. You can find these supplies easily at your local hardware store.

How To: Make Your Own Salt Crystal

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How To: Make Edible Slime

A cool experiment for kids and parents that allows you to make edible Kool-Aid slime. The video attached gives the step-by-step process and shows how fun it is to create the final product.

How To: Clean Copper Coins in One Minute

Video: . You Need just 2 Components:

How To: Make Oobleck

Oobleck is a cool substance that is not quite liquid or solid. Don't believe me, then try for yourself!! All you need is a couple of household ingredients!!

How To: Heavy Water & Light Ice Experiment

Heavy Water & Light Ice Experiment. What happens? Ice floating over vegetable oil but it decreases in baby oil.

How To: Make Slimy Teenage Mutant Ninja Turtle Ooze at Home

It's been a minute since Michael Bay released his tragedy of a remake of Teenage Mutant Ninja Turtles. As a huge fan of the cartoon and the movies from the '90s, I have made it a point to not watch the latest this franchise has to offer—I'm certainly not in the business of ruining my childhood. But the awfulness of the remake aside, the TMNT resurgence means I'm celebrating the comeback of everybody's favorite teenage reptiles. Thankfully, Todd's Kitchen has a tutorial for mutant ooze that's ...

How To: Make a Fire with a Magnifying Glass

Here is a video that shows 90 seconds that could save your life. How to actually MAKE A FIRE with a lens, rather than just burning a hole in a leaf. (Or frying ants, which seems to be the other thing that kids like to do with magnifying glasses.)

How To: Separate Batteries, Good from Bad

A simple method to test any alkaline battery in seconds! Works on AA, AAA, C, D batteries. You can separate good from bad.

How To: Make Glowing Oobleck from Potatoes & Tonic Water

This magical, glowing mixture is very strange, with an equally strange name (Oobleck), because it feels like moldable pizza dough in your hands one second, and like liquified goo the next.

How To: Make Quicksand at Home Using Cornstarch & Water

Creating awesomely messy slops of DIY slime and curdled fake blood isn't something new—we even have guides on making Dr. Seuss-friendly Oobleck and the radioactive green ooze that created my childhood favorite Teenage Mutant Ninja Turtles (minus the radioactive part, of course).

How To: Make an Alternative Way to Cook Food

There is always an easier way to do something whether you want to clean, organize, freshen the smell, get water into a bucket that won't fit in your sink. The same principle applies when cooking. Sure you could cook food in an oven, microwave it, boil it, fry it, cook it with a solar cooker, but there is an easier and inexpensive method.

How To: Create a Water Vacuum

Water is such an essential substance for so many facets of life. Why not experiment with it? This experiment will teach you how to create a water display like those Japanese water falls.

How To: Make Ocean in a Bottle - Super Cool Science Experiment

Cool Science Experiment with water and Cooking Oil.

How To: The 5 Best Dry Ice Party Tricks & Pranks

There's no reason to wait for Halloween to play with dry ice. It definitely creates a creepy fog-like effect when you add a little water to it, but there are some other really cool things you can do wit dry ice. Here are just 5 non-Halloween ways to use dry ice for tricks or pranks.

How To: Make Copper Glow Red Hot with Acetone

In this video, I will show you how to make copper glow red hot with the catalytic oxidation of acetone. For this science experiment, we'll just need some acetone, copper wire, and a flame source to initially heat the copper coil we'll make.

How To: Make Pancake Syrup Turn Blue When You Shake It with This Color Changing Experiment

In this video, I will show you how to perform the color-changing, blue bottle experiment with common household products.

How To: Make Black Snake Fireworks With & Without Fire

In this video, I'll be showing you how classic black snakes work and how to make them at home. There are actually two methods covered in the video — one that uses fire and one that does not. So just choose the one that fits best for your situation.

How To: Make an Iodine Clock Reaction at Home

In this video, I'll be demonstrating how anyone can make their own iodine clock reaction with simple over-the-counter chemicals.

How To: Make Green Fire from Laundry Booster

In this guide, you'll learn how to make your own boric acid from borax and other common chemicals to produce a green flame when mixed with methanol.

How To: Create Toxic-Free Green Slime (Makes a Perfect Kid Toy)

This slime is toxic-free and can be used as either a kid toy or to make a great prank. This slime can be made in just a few minutes and doesn't require much for materials. Our video explains in detail how to accomplish this project with step-by-step instructions.

How To: Instantly Ice Soda into a Frozen Slushy

In this Quick Clip, I'll be showing you how a supercooled soda is transformed into a slushy "slurpee" in under 4 seconds. I was inspired to do this little soda trick by The Super Effect's video on YouTube from a few years ago.

Make Slime Without Borax: 5 Easy Recipes for Gooey Homemade Ooze

One of the only things I remember from watching Nickelodeon as a kid is the epic green slime. Looking back, I don't know what was so great about it, but every kid my age thought that being drenched in slime would be the coolest thing on earth.

How To: Instant Ice! How to Waterbend in Real Life

In one of my previous articles, I showed off how to make water freeze into ice instantaneously. In this article, I'd like to elaborate on this, and show how a glass of water can turn to ice instantly on command. What exactly is this supernatural power? Discover the secrets to ice-bending—in real life.

How To: Make Magic Sand

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How To: Karate Chop a Paint Stick with Help from Air Pressure and a Plastic Bag

How heavy is a plastic bag? Not very heavy at all, but in order to use a plastic bag to help me karate chop a thin wooden stick, I don't need weight—I need air pressure. Below, the "Quick Clip" demonstrates the power of air pressure via the vacuum created between a plastic bag and the countertop.

How To: Deflate and Reinflate Balloons Using Liquid Nitrogen

In this "Quick Clip," I tried dunking inflated balloons into a container filled with liquid nitrogen until they were completely flattened and seemingly destroyed. Once out of the liquid nitrogen, the balloons come back to life and reinflate on their own—without even touching them!

How To: Make an Electric Firebolt

A lot of my hacks use salvaged parts from an old microwave, with the microwave oven transformer (MOT) being the most useful component.

How To: Make a Quarter Scream and Shiver

This science experiment deals with sublimation of dry ice into carbon dioxide (CO2) gas. In the video, I'll demonstrate how pushing a quarter into a block of dry ice makes the quarter scream and shake vigorously.

How To: Shutdown a Computer Instantly..

In this clip, you'll learn how to Shutdown a Computer System in a second,just in 3 steps.. Step 1: Create a New Shortcut

How To: Make a Paperclip Float on Water

This quick video demonstrates the classic experiment of making a paperclip, or multiple paperclips, float on water.

How To: Make a Crazy Zigzagging Stream of Water Using a Speaker

Sound waves are a lot more versatile than you'd think. For starters, you can use them to project images onto a bubble and liquefy gummy bears. And now, YouTube scientist and optical illusionist extraordinaire Brusspup shows how sound waves can also be used to manipulate a stream of water into a zigzag shape.

How To: Turn a Glass Bottle into an Electric Tornado Machine

We've all seen the classic tornado-in-a-bottle science experiment, which uses 2 two-liter bottles to create a whirlpool effect. This version requires you to get the tornado started yourself by spinning the bottles, but what if you want to make it fully automated?