Chemicals

Home chemistry is great, but what happens when you forget to label your chemicals? How do you know if you turned a clear glass of ammonia into a clear glass of unobtainium? Chemists have a tool for just that. Litmus paper are small bits of filter paper saturated with a reacti ...more

Remember KODACHROME? That color reversal film from Kodak? The film that was the inspiration for Paul Simon? The only brand of film to have a state park named after it? Soon, that's all you'll be able to do— remember it— because today is the last day that any kind of Kodak Kod ...more

Glass is one of the least reactive substances known to chemistry. It is the standard container material for almost all lab chemicals because it's so inert. But there are a couple of substances that have strong reactions with glass. Sodium hydroxide, aka solid drain cleaner or ...more

Acne medication can get expensive, but there are many common household items lying around your kitchen and bathroom that are perfect to use as a facial, face wash, or on-the-spot zit treatment to decrease the redness of acne and, more importantly, prevent future pimples from c ...more

When Apple announced its new iPhone 7 and iPhone 7 Plus models in San Francisco, one of the biggest new features was an "IP67" water-resistance rating. Couple that with a few official renderings that show the new iPhone covered in water, and you'd probably arrive at one logica ...more

They're finally here. Apple announced three new iPhone models at their "Gather Round" event in Cupertino, and they're all absolutely gorgeous phones. With bezel-less screens and polished titanium edges, the iPhone XS, XS Max, and XR are truly marvels of engineering — but perha ...more

Hydrogen gas has been a front runner in the alternative fuel debate for decades now. It is plentiful, inexpensive, and the only byproduct of its combustion is water vapor. In the following video, I demonstrate how hydrogen can be produced in large quantities using very inexpen ...more

Fluorescent dye can be a great addition for decorating around the house for Halloween, especially for a haunted one. Creating your own fluorescent dye is a simple experiment, as long as you've got the proper chemicals and safety gear. Nurd Rage details the chemical process of ...more

Cleanliness is next to godliness. My interpretation of that age-old adage means that keeping your house clean is just as un-fun and boring as being a goody two shoes. That's why they call things like laundry and doing dishes "chores," I assume. Yuck. Lucky for you, though, we ...more

Samsung's new line of Galaxy S20 flagships have a water resistance rating of IP68. This means you don't have to worry as much about getting the phones wet, but there's a limit to that. The IEC standard 60529 outlines a series of tests performed by the National Electrical Manu ...more

Ever since the much-lauded effects of the Mediterranean diet became widely known, people have been buying olive oil by the gallon. A diet that prevents heart disease, is based on fresh, seasonal foods, and includes a tasty as hell fat like olive oil? Duh—that's a no-brainer. ...more

Writing secret notes with lemon juice was one of my favorite pastimes as a child. All it took was a small flame to lightly scorch the paper and reveal the hidden message. Now that I'm tall and pay bills, lemon ink just isn't exciting enough anymore. Luckily, we can use another ...more

First of all, I would like you all to meet my good friend Iggy. There he is, in all his scaly reptilian glory. As you can see, he spends a lot more time on top of his cage than inside of it. You see, Iggy here doesn't deal well AT ALL with confinement. I don't know if it's pos ...more

Sodium (chemical symbol Na) is an interesting element. It reacts in contact with both oxygen and water, and several sodium salts are used to produce a yellow color in fireworks. The metallic form has limited uses in chemistry, and is too soft and reactive to be used as a buil ...more

After a few years, your cinnamon, paprika, and saffron begin to lose their vibrant hues, and the aromas that once filled your kitchen are barely distinguishable when you open their jars. These are telltale signs that your spices need to be replaced sooner rather than later. D ...more

If you're a Febreze fanatic, you're well aware that the "odor eliminator" can be pretty pricey, and that's reason enough to stop buying it. There are cheaper ways to stop smells from invading your home, from using lemons to de-stink a litter box or garbage disposal, to using ...more

The best go-to method for reducing your risk of infection is to wash your hands. Next time you reach for the soap, here is some news you can use. For years, soaps and healthcare products touted their "antibacterial" properties. While soap was good, antibacterial soap had to b ...more

RFID cards are becoming a fairly common way to purchase goods, but they're already widely used to pay fares on buses, trains, subways, and trolleys across various cities. TAP cards are quick and reliable, but it can be a real pain to remember to bring them with you, especially ...more

You've made a bottle rocket (or ten) and a sparkler bomb, and now you want to put those empty plastic bottles to a new pyromaniacal use. With a little rubbing alcohol and a match, this video by io9's Esther Inglis-Arkell will show you how to make your own homemade rocket boost ...more

There are so many cutesy pink, red, and heart-shaped desserts and drinks put out on Valentine's Day, but none of those really get you into a low-light mood. Instead, turn up the heat with one of these aphrodisiac cocktails for grown-ups. What all experts seem to agree on is t ...more

WonderHowTo is made up of niche communities called Worlds. If you've yet to join one (or create your own), get a taste below of what's going on in the community. Check in every Wednesday for a roundup of new activities and projects. Thanks to all of our active moderators and ...more

Let's face it: most commercial bathroom products are overpriced and loaded with weird chemicals. So how about a 2012 resolution to go completely DIY with two bathroom essentials many of us use on a daily basis: toothpaste and shaving cream? Going DIY with shaving cream is rid ...more

Wondering how to get long hair naturally? How do you grow your hair? In this video Rachelle and Sam give you 10 tips to get those long locks naturally! Video: . Step 1: Practice Good Hair Habits Daily treatment to your hair; Don't brush it too hard; Harsh chemicals; and High ...more

In this video, I'll be demonstrating how anyone can make their own iodine clock reaction with simple over-the-counter chemicals. Video: . Household Materials Needed Hydrochloric acid (for cleaning purposes) Hydrogen peroxide (3%) Sodium hydroxide (drain cleaner) Povidone-iodi ...more

PVC isn't something you want to send to the landfill. It's not going to do anything good for the ground when it's buried. It is also something you really, REALLY don't want to send to an incinerator. When burned, PVC releases some really nasty chemicals, including hydrochloric ...more

Starting in October, many Nexus 6P users have been experiencing a bug that causes their phone to completely shut down, even though there was 20% or more battery life remaining. At first, it was thought to be a direct result of the recent Android Nougat update, but a combinatio ...more

If you want to keep the inside of your car smelling awesome, don't buy commercial air fresheners. They contain toxic synthetic chemicals which can be harmful to your health. Using recycled cardboard, fabric, a piece of string, a hole puncher, and some natural essential oils, ...more

If you consider yourself a regular coffee, tea, or hot chocolate drinker, you probably have a kitchen cabinet full of stained mugs that refuse to scrub clean. Thankfully, there is a better solution that doesn't involve continuing to fight those stains with a sponge, bleach, an ...more

There's three types of animal lovers in the world. The first are your basic pet owners. The ones with a cat or dog in the home, meant to be their cuddly companion. They love and adore it and consider it a member of the family. The second are animal rights activists. They ten ...more

Many of the beauty products you buy at drug and department stores are loaded with potentially toxic ingredients like parabens, while their active ingredients are made of things like glycolic, lactic, malic, and alpha hydroxy acids and retinoids, which are all derived from food ...more

By Maria Stuart Being natural most black women who chose not to permanently alter their hair with chemicals. Natural hair refers to texture not color. While dyes change the natural color, they do not affect the texture significantly. As Head Naturalista in Charge at my univer ...more

There are many, many home remedies out there for relieving itchy mosquito bites. Everything from mud to banana peels and basil leaves to Alka-Seltzer tablets can help curb the itch. But before you even have to resort to any of those methods, you should be thinking about preven ...more

Minor mishaps occur all the time in the kitchen, whether you cut your finger while dicing an onion, scorched your hand in a grease fire, or burned the roof of your mouth because you were to eager to taste-test your killer pasta sauce. While the old standbys of ibuprofen, band ...more

This is a whole new level of "Paleo," guys. Seriously: there's nothing more primal than a giant hunk of meat cooked in direct flame. Fancy grills and grill masters be damned—this method of cooking your meat is both the past and the future. Don't Miss: 10 Clever Ways to Cook ...more

Coconut oil must be sent from the gods themselves, because this stuff is made of miracles. If you ever wondered why your mother always has it around, it's because she's smart enough to know the countless uses for it. Whether you need a beauty remedy, help with weight loss, or ...more

Halyomorpha halys, squash bug, shield bug ... What's in a name? A pest is a pest and the brown marmorated stink bug is a pest par excellence. Though some home gardeners are content to use insecticides, you'll find that it's generally easier to work with nature than against it. ...more

If you're on a tight budget for food, whether you're in college, or someone just starting out living on their own, you're probably low on money and sick of ramen noodles. Don't get me wrong, ramen can be tasty and filling, and there is almost nothing cheaper. Sadly, people ar ...more