In this video, we learn how to properly balance chemical equations. You will see what substances are in each side of the equation. You will then need to count the atoms that are on each side of the chemical equation. Once you write down the number of atoms on each side, you will need to even them out. To do this, you need to change the coefficients within the equation. These change the total number of atoms inside of a chemical. Once you do this, you will add more to each atom present and the...
From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps (or just finish your homework or study for that next big test). With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to unpack and solve word problems involving a mixture of two or more substances.
Making a blue glowing substance is easy, as long as you already know the secret to making green luminescent phosphorescent glow powder. By watching the green glow-in-the-dark procedure, you know that you will need strontium nitrate, aluminum nitrate, europium and dysprosium nitrates, and nitric acid. That will make a green glow, but if you want to make a blue version, it's a relatively easy fix...
Origami is one of the oldest art forms. The uniqueness of this art is that it is made with only a single substance, which is paper. Paper is very common and cheap material. This video describes how to make a slice of 3D origami watermelon using paper of green, white and red colors. This can be used as a show piece with other fruits in a fruit basket. This is also a great gift idea. Make a 3D watermelon origami fruit basket to adorn your dining table.
Latte art is a fun, creative way to spice up your average cup of joe. Watch this video to practice your latte art with steamed soapy water. First, pour a drop of dish soap into a latte making cup. then using the espresso machine fill it with hot water. Use the espresso machine to help steam and mix the soap, as if it were a latte. It will turn into a white, frothy substance. Then pour the soapy water into a coffee mug. Use the latte cup's guide to make sure you pour at the right angle. Watch ...
This short video is about melting a styro cup without fire. It's magical. Anyone watching it would wonder what had happened to the Styrofoam cup which was dipped in Acetone, nothing but common nail polish remover. This is a short and cute video and watching this could be fun for kids. The fun element comes at the later part of the video. This would kindle the interest of kids in trying out the reaction of different substances in various solvents.
Cleaning gutters is really not that hard. Get out your ladder and position it so that you can reach the gutters. Start by removing all the big stuff such as twigs and bigger sticks that have gotten into the gutter. These bigger items can be removed with your hands. What is left can be pretty yucky? There is a mud like substance that is made up of water, decomposing leaves, newer leaves, and smaller sticks that you won't want to touch. So use a scoop made out of a mild container that is cut in...
Not sure how to safely clean your wood table without ruining it? In this video tutorial, learn how to properly wipe off your table and how to protect it with a sealant called, Pastewax. This substance dries and does not attract dust making your table look shiny & new, like a piece out of a museum!
In this video we learn how to balance chemical equations properly. What is a chemical equation? It's a statement that uses a chemical formula to show identities and relative amounts of the substances involved in a chemical reaction. To balance an equation out you must have the same number of atoms on both sides of the chemical equation. Or, you must have the same amount of mass or matter on both of the sides. Once you have these balanced out so they are the same then you will have it complete...
Fondant is one of a pastry chef's favorite substances because it's so versatile. You can use fondant to coat a cake with an even, smooth surface, you can shape fondant into little adornments like fish and ladybugs, and you can even employ fondant to decorate cookies.
In this video, we learn how to evaluate a woman's body toxins. The best way to do this is to evaluate your life and your career. Different careers can expose you to toxicity. Another thing is test that your doctors can give you, that look at urine, blood, and saliva for toxic substances. These are not for everybody, just a certain population. But, the accuracy of these tests have not yet been proven scientifically. Not everyone needs to go on a detoxification diet, but it certainly can help y...
Protecting your home from water sounds like an easy enough task. It's only water, right? Well wait long enough and you'll find out that water always wins. Whether it builds up in your walls or in your basement, some sort of damage will arise due to the wet substance. But there are ways to hold back the water in order to protect the very space you live in.
In this Outdoor Recreation video tutorial Dave from 'journey the outdoors' explains how to make a bench shooting bag. This is used by bench or week-end shooters for recreation purposes. For this you will need an old sock. Take one that you don't use anymore and preferably a tight knit sock. Then fill it with rice and tie the open end of the sock. You can also fill it with beans or some other such substance. Rice and beans being bigger than sand, there will be more air in the bag and it will a...
How much air is actually inside a packing peanut? There is a simple experiment to conduct to see what is leftover. To begin, pour 200 ml of acetone into a glass container and add approximately 1800 ml of packing peanuts. Stir with a wooden spoon to dissolve. The video's author starts with the 1800 ml and realizes that that isn't enough. He then keeps adding until he has added an entire large bucket to the original 200 ml of acetone. After all are dissolved, all that is left in the glass conta...
In this Home & Garden video tutorial you will learn how to make a concrete counter top mold. Fu Tung Cheng from Concrete Network presents this video. For making different edges on your counter top, a compound called polyurethane is used for making the mold. It is a two part compound mixed together to form a rubbery substance. While using polyurethane follow the manufacturer’s recommended dosage, time, proportion and also use the recommended release agent. Take a piece of the molding wood and ...
This video shows you how to calculate the percentage yield in chemistry. To find the percentage yield, you will need to divide the actual yield by the theoretical yield. Then, multiply it by 100: i.e. % yield = actual yield/theoretical yield x 100. An actual yield is the amount of a substance produced in an actual laboratory experiment. It is based on an actual physical measurement of a quantity. The theoretical yield is the yield as is calculated on paper: i.e. through calculations. Therefor...
The way to convert 0.300 Moles of water into Grams is to start by writing what you have. Then put grams on top and moles on the bottom, then put one by the mole, the omler mass goes by grams. Now you figure out the moler mass of water which has 2 H and 1 O, its 2 times 1 which is the atomic mass for hydrogen plus 16.0 for oxygen which gives a total of 18.0 g/mol. So then you insert the 18 up by the grams, now you can cancel out the moles and multiply 0.300 times 18.0g and it gives you 5.40 g,...
JohnnyRawAppleseed demonstrates a delicious dish of raw vegan tuna pate. This is healthy and delicious. You will need some sunflower seeds, lemon, dill, oil, salt, parsley, onion, celery and pickles. Chop all of these up, throw them into a blender, add roughly one to three tablespoons of raw tuna, and you will then blend to a fine mushy substance. This is ideal for spreading or using as a topping, even throwing onto a sandwich or a salad. Crackers, toast and various chips can also be used. So...
Things you'll need: A quarter of Squash, sliced 1cm X 5cm X 4cm Half a bundle of String beans (long), cut 2 inches long 1 bundle Okra, cut into 2 3 Eggplant, cut into 8 parts 1 bulb Onion, sliced 4 cloves of medium
Shiny marble floors practically scream "wealth and substance"—so if you want your marble floor to scream it too, it's time to get shining.
Watch this video tutorial to see how to make extremely simple scales. This scale is useful when you want to weigh small portions of a substance (like a few grams of powder). It is difficult to get real weight using these scales though. To make this homemade scale, you'll need a plastic bottle cap, a plastic bottle or box, a 9v battery, clear sticky tape, glue for the plastic (epoxy or fast-hardeneing), scissors and a screwdriver.
Everyone loves a magic trick, especially when you wow them with a seemingly normal object. In this trick, take a regular coin and make it disappear and move around magically! Soon, you will be the hit of every party!
It’s time for science. You are able to calculate the molar mass for a compound using the periodic table and the amount of compound involved. You might need to know this in your everyday life but you will definitely need this in a chemistry class.
In this video, we learn how to make slime for under 5 dollars. You will need: a large pan, gallon of water, food coloring, and 1 c corn starch. Mix in warm water and continue to mix until everything is well combined. Keep adding more water to corn starch until it's the consistency that you would like. After it's hot and a slimy substance, add in some food coloring that you would like. After this, pour the slime into individual containers and allow it to cool so you can use at a later time. Wh...
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 midd...
Cotton candy is a treat generally reserved for carnivals, fairs, and other events that don't come around often enough. Through some clever construction and about $45 in materials though, you can have all the sugary substance you could ever want with this awesome DIY cotton candy machine. All you'll need to construct your own are two dollar store stainless steel bowls, a fan motor, a few odd screws and bolts, a drill, and a propane torch. Check out the tutorial video below. As an added bonus, ...
Essay writing is the bane of most students' educational existence. Whether you're a college student tired of slaving away over 30-plus page research papers or a high school student just trying to get through AP Language, chances are you'd love to find a way to cut down on all the writing. Before you spend hours googling facts and figures to cram into your next paper, work smarter by cutting down on content.
For new landscapes people tend to generally plant the new 'purple leaf plum' trees in a square shaped small plots. They also plant some small plants around it to make it look good. However when the tree grows older it needs to spread its roots. At that time these plants may try to hinder the trees roots growth. Therefore it is advisable remove them once the tree starts growing bigger. Then you can also add water to the roots by spreading it around the area of the tree.Whenever there is proble...
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.
If you had to answer the following statement, which answer would you choose? Water is:
There's a few reasons why you might want to purify chemicals by recrystallization, but the best one could be luminescence glow-in-the-dark dust.
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 woul...
We learned during the LG G7 ThinQ announcement that AT&T would be carrying a new V series device, the V35 ThinQ. In the LG V35 ThinQ's press release, LG revealed its specifications but left out pricing and availability. Thanks to Project Fi, we now know its price tag, and you may not like it.
It's that time of year again — Apple will be hitting the stage in California to talk about new features coming to iOS and macOS devices in the near future. Of course, you're going to want to tune in and be up to date on all the changes coming to your Apple products.
If you've accidentally jiggled your Xbox while a game was playing (or maybe your pet did), you might experience the Perfect ring scratches - or a laser burn. Ignore all the advice that tells you to use toothpaste, an eraser, or even crazier substances. All you need to do is go down to your local video game store or rental store (like Vintage Stock, GameStop, EB Games, or a similar place) and ask for a disk resurfacing. It's usually either cheap or free, and definitely worth it!
There are a variety of substances that you can use to clean your LCD screen. The one thing you don't want to use is anything that has alcohol in it. Alcohol will damage your LCD. Any LCD cleaning liquid will work to safely clean your LCD. It is also good to use a microfiber cloth also so that they don't put any scratches in the screen. You should never use napkins, paper towels, or Kleenex. The primary ingredient in most LCD cleaners is water. The key is that they remove the impurities and ch...
Smash glow? What the heck is that? That's exactly what you'll find out… watch this science video tutorial from Nurd Rage on how to make smash-glow crystals (triboluminescent crystals) with Dr. Lithium.
Installing shelves in a closet turns dead space into useful storage. You Will Need:
Don’t pay a handyman to do this simple job—learn how to become handy yourself! You Will Need:
Devastating and deadly, land mines are a persistent threat in many areas of the world. Funding to clear regions of land mines has been decreasing, but new research may offer a less dangerous method of locating hidden, underground explosives by using glowing bacteria.
