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. Of course, the first thing I did ...more

Most of us have conducted an investigatory science project without even knowing it, or at least without knowing that's what it was called. Most science experiments performed, from elementary to high school students and all the way up to professional scientists, are investigato ...more

Interesting reaction coke and milk The reaction of phosphoric acid (V) to proteins in the milk - they are cut and causes a precipitate The reaction of phosphoric acid with calcium contained in milk gives rise to a precipitate 3Ca + 2H3PO4 ///\\\ Ca3(PO4)2 + 3H2 It is a reacti ...more

The video shows how to calculate weight if the mass is given and vice versa.Later on in this unit you will learn about Newton's laws of motion and Newton's second law of motion gives us a way to change mass into weight and vice versa.This law will tell you what is happening to ...more

In this tutorial, we learn how to find the standard deviation with the Z-Score formula. First, take your problem and write it out one by one underneath each other. Then, you will need to substitute the numbers in for the variables that are in the problem. Once you do this, you ...more

This how-to video is about how to find the percent when two numbers are given. To find the percent of two numbers just follow these steps: 1)First we need to convert the given numbers into decimal, for example 36 is what percent of 45?, to solve this first divide 36 by 45(36 ...more

In our personal experience, the hardest part about a science investigatory project is simply coming up with a good idea. And we suggest that for your investigatory project you find a topic that's both novel and useful. Check out this science tutorial to learn how to make a ba ...more

This how-to video is about how to find a number when its percent is given. This video is really helpful and effective in finding the number when the percent is given, the following steps are explained in the video to find the number when its percent is given: 1)Convert the p ...more

Slope is the change in Y over the change in X. Written out, the formula looks like (y2-y1)/(x2-x1). Take a look at your coordinates. Now, substitute those coordinates into the slope formula. To do that, look at your first set of coordinates. The movie uses (-7,5). So -7 is x1, ...more

Sometimes it can be difficult to find information essential to a citation on a webpage, like an author or a date. Here are some steps you can take to make up for this lack of information. - If there is no author listed, use the title of the webpage or the article you are view ...more

Want to learn the principles beyond Boyle's Law in a way other than just hitting the books and getting bored to death? Then a science experiment is key. This video teaches you how to inflated a sealed balloon inside a vacuum chamber. The pressure exerted on the balloon will d ...more

In this tutorial the author shows how to derive a slope-intercept equation of a line given an X-Y table. He explains that the general form of slope intercept form which is y = m*x + b. Now he intends to find value of slope, i.e. m first. Now slope is change in y over change in ...more

In this tutorial the author shows how to find out the missing side of a triangle which is similar to an other triangle. He explains the concept of similar triangle using diagrams and by showing that similar triangles have equal corresponding angles and parallel sides. Now he l ...more

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. Video: . Black Snake Version 1 (Fire) Powdered sugar Sodium bicarbonate (baking soda) ...more

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 ...more

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 p ...more

To write the sum or difference of logarithms as a single logarithm, you will need to learn a few rules. The rules are ln AB = ln A + ln B. This is the addition rule. The multiplication rule of logarithm states that ln A/b = ln A - ln B. The third rule of logarithms that deals ...more

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. With this free math tutorial, you'll learn how to s ...more

In this video, we learn how to write a good argumentative essay introduction. This is a persuasive essay that is just an argument. What makes this an essay is that it has an introductory section, main body, and concluding section. Many high schools and universities will requir ...more

Looking for a guide on how to solve absolute value equations in algebra? See how it's done with this free video math lesson. Need help finding the From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged t ...more

Have you ever seen water freeze instantly? This "Quick Clip" shows some of my personal experiences with making instant ice using a bottle of water supercooled in a freezer. Video: . To get this "instant ice" effect, I put unopened bottles of water in the freezer for anywhere b ...more

In this video Mr.G puts a new spin on magnets and bare copper wire with just a simple battery. Motion via magic? Not quite, but pretty darn close! Join Mr. G, and build your own motor with its own unique new spin. This is a fun, easy, do it at home experiment.

Back in 2007, YouTube user HouseholdHacker posted a parody video on how to make a high-def speaker for under a buck. MythBusters took on the challenge and busted it. Although that particular method doesn't seem to work, that doesn't mean you can't make your own speaker for le ...more

If you have a fossil, you can tell how old it is by the carbon 14 dating method. This is a formula which helps you to date a fossil by its carbon. If a fossil contains 60% of its original carbon, how old is the fossil? The half life of carbon 14 is 5600 years. That means this ...more

This free video science lesson from the Home Scientist demonstrates a simple technique for creating ammonium chloride from hydrochloric acid and ammonia. For all of the relevant details and detailed, step-by-step instructions, as well as to get started trying this experiment y ...more

This tutorial tests the conductivity of metal. This is a simple science experiments that children will enjoy. They can test many objects in the home. This is play and learning combined.

Do you even know what a Leyden jar is? Well... it's an early form of capacitor made from a glass jar with layers of metal foil on the outside and inside. This video tutorial will show you how to make a Leyden jar to store static electricity. This Leyden jar will give you a pow ...more

Very easy to make! Cool experiment for self-inflating balloon. All you need is a bottle, vinegar and a baking soda.

Glowing substances have always held a powerful appeal to people, and making new ones can be a lucrative business. If you need some glow powder for a project of yours, watch this video to learn how to make DIY glow-in-the-dark powder out of normal household chemicals. Video: . ...more

Check out this video to see our Fantastic Foamy Fountain in action. The experiment uses Hydrogen peroxide and dry yeast. Hydrogen peroxide is similar to water but it has an extra oxygen atom. This makes it more dangerous and only adults should handle the hydrogen peroxide. Wh ...more

This little brain game is all about engineering a lower center of gravity. The idea has been around forever, but most people still don't know how to do it. Trying to stack nails above the balance point will raise the CG and make the structure unstable. Here's how you can lower ...more

This is a magical way of doing super-fast mental math. Learn to calculate faster than the speeding calculator..

Ever gone to a bar and ordered a B-52? These layered drinks are not just impressive to look at—they're also great demonstrations of the principle of density. Photo by Science of Drink The layers work because less dense liquids will always float on top of denser ones. This is ...more

Most folks mistakingly think that slime - or green silly putty - simply can't be whipped up without borax. But the buffer solution can easily be replaced by another ingredient that you already have lying around in your house: laundry detergent. Icky green slime has a plethora ...more

Did you sleep all semester in your Calculus class? Are you just waking up now to realize you have a test on Monday and that you're totally screwed? Well, luckily you can learn an entire semester worth of Calculus in just twenty minutes... or at leasts that's the hope. Part 1 o ...more

Believe it or not, there are cheap ways to make potassium nitrate for your chemistry experiments. And the key ingredient… "sodium-free" salt. Watch this science video tutorial from Nurd Rage on how to make potassium nitrate at home with Dr. Lithium. You already learned how t ...more

This is a mathematical educational video on how to find extra points for a parabola. In the first two examples there is no need for finding extra points as they have five points and have zeros of the parabola. In example 3 we need to find extra points. The equation is y=4xsqua ...more

In this video tutorial the instructor shows how to find the slope of a line given two points with fractional values. To do this first name your two points as point 1 with coordinates as x1, y1 and point 2 with coordinates x2, y2. Then substitute the values in the equation of t ...more

To calculate percentage composition we will take the example CO2 it stands for Carbon-Di-Oxide. It is the composition of Carbon and Oxygen. We have one carbon and its weight is 12.01 and 2 oxygen. So, we will multiply 2 with 16.00 which is the weight of the oxygen. C - 1* 12. ...more

If you're not just a chemistry nerd, but also a firearms freak and explosives nut, then this home brew chemistry concoction is just what you need for some cheap homemade potassium chlorate. It's a mixture of potassium, chlorine and oxygen (KClO3) and is used for such things as ...more