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How To: Balance chemical equations with Olivia and Andrea

Olivia and Andrea created a song to the tune of "I'll stand by you" by the Pretenders to teach you how to balance chemical equations. A chemical equation requires coefficients in order to be balanced. You can balance a chemical equation by making use of the Periodic table. The example reaction in the song is that of aluminum and oxygen to produce aluminum oxide (Al + 02 -> Al203). You can systematically add coefficients to the reactants and products to balance the equation. A chemical equatio...

How To: Make a simple rocket with film canisters

Try out this science experiment... watch this video tutorial to learn how to make a simple rocket with film canisters. This is purely educational, and demonstrates the reaction of an Alka-Seltzer tablet, toilet paper, and water. If you don't have Alka-Seltzer, you can substitute it with baking soda, then substitute the water with vinegar.

How To: Use front- and back-post double crochet stiches

The person in the video demonstrates how to do a front post and a back post double crochet. First she shows you what a post is. The body of the previous row of double crochet is the post. To do a front post double crochet, you should loop the thread over the hook and put the hook under the post through the hole before it and bring it out from the hole on the other side of the post. Then you can loop the thread over the hook again and pull the hook out through the same way it went in. Then you...

How To: Make rolling pinwheels with post it's

From the creators of the Diet Coke and Mentos experiment, EeepyBird demonstrates how to have fun with sticky notes. All you need is a stack of post its, and a glue stick. Glue each post it to one another, alternating sides, to create a chain. Next connect in a post it circle & you get an amazing post it pinwheel! Fun paper craft project. Enjoy.

How To: Make Your Very Own Blinding Sunbeam with a Lithium AA Battery

Taking apart batteries is one of those things that every adult you've ever known has warned you against. Today, we break the taboo and dive into a lithium battery. Lithium has some pretty cool properties—it burns instantly in water and glows blindly bright under flame. And with just one AA battery, you can make a blinding light beam inspiring supernatural awe in all dictatorial adults who doubted you.

How To: Reduce Browning in Avocados & Other Fruits by Switching Your Knives

Keeping apples or avocados from browning after being cut is impossible; within minutes of being exposed to air, these fruits (yes, avocado is a fruit) begin to brown. No matter what you try—adding lemon juice, keeping the pits in place, immediately sealing the produce in an airtight bag—brown discoloration always occurs. However, air is not the only reason that foods like apples, avocados, and lettuce brown: it's also due to the knife you're using.

How To: Clever Chemistry-Based Cures to Common Kitchen Conundrums

You probably already know that cooking involves a ton of chemistry. Bread rises because of the reaction between the flour and leavener, and the delicious crust on your steak is formed by the Maillard reaction. Understanding the chemistry going on behind the scenes is one of the best ways to improve the quality of your food—it's much easier to fix a problem when you know what's causing it.

How To: Create a natural Parisian makeup look

What is it about Parisian women that makes them so effortlessly chic and timelessly beautiful? Whether we're talking about Charlotte Gainsbourg, AKA Jane Birkin's daughter, or an older lady like Juliette Binoche, Parisian women really take it easy when it comes to applying makeup, emphasizing skincare instead. And they look gorgeous doing it.

How To: Experiment with dry ice

In this tutorial, we learn how to experiment with dry ice. You can buy dry ice from any grocery store, so grab that and you will also need some soap. After this, grab the dry ice with some thick gloves and set aside. Then, put some hot water inside of a container with some soap. Put the dry ice last inside of the container. After you're finished, you can wait to see the reaction occur! It will start to smoke and make different noises which is fun to watch and see! When done, clean up your are...

How To: Test for boron with curcumin

Want to test whether the soil sample or a water sample contains boron, watch this video. As shown in the video, the first step is to create test specimens of various concentrations using a simple turmeric and ethanol solution as a base for comparison. The basis of this experiment is the fact that curumin present in turmeric reacts with boron to form a reddish compound and so the result of this reaction can easily be verified visually.

How To: Understand chemical change in chemistry

In this video we learn how to understand chemical change in Chemistry. When you start out, you must first figure out what your cathode and anode is in the equation. Then, read it out to find out if it's oxidized. Once you have this figured out, you can find the conditions of temperature you need to maintain the chemicals. You can figure this out b doing a basic equation for all of the chemicals. Fill this in with the correct information, then the answer will be done. Make sure you understand ...

How To: Make caramel sauce at home

In this tutorial, we learn how to make caramel sauce at home. First, pour some sugar and water into a large saucepan. Turn on the heat and then wait for the reaction between them to begin. The sugar and water should start to boil, then put the lid on for two minutes and then take it off. After this, boil for 5-10 more minutes until it gets darker. After this, you will need to stir in the butter and the cream. Once both of these are completely combined, you will pour into a dish and let the ca...

How To: Balance chemical equations using a teacher's guide

In this video we learn how to balance chemical equations using a teacher's guide. A chemical equation is a brief way of summarizing what happens inside of a chemical reaction. When you mix up two different chemicals, they will create new types of chemicals in the equation. You have to take these new chemicals into equation when you are trying to balance it out. The mass on both sides must be the same as well as the number of different chemicals on each side of the equation. Try out practice e...

How To: Understand chemistry & chemical change

This video tutorial is in the Education category which will show you how to understand chemistry and chemical change. The question here is 10g of Mg ribbon reacts with 0.15 mol decimeter cubed of hydrochloric acid at 25 degree Celsius. What is the balanced equation for this reaction? When magnesium reacts with hydrochloric acid, you will get magnesium chloride and hydrogen. So, the equation will be Mg + 2HCl = MgCl2 + H2. Mg is in group 2 of periodic table and has a valance of 2, whereas Cl i...

How To: Understand the hemoglobin & its role in the body

An in-depth explanation of the structure of the hemoglobin molecule, the process by which it binds with the oxygen in the lungs, how it dumps the same oxygen molecule at the appropriate location in the body and how carbon-dioxide gets attached to the hemoglobin molecule are the topics which the narrator in this video explains with diagrams and a few equations.

Perform a backward wristlock: "Omote Gyaku"

In this video, we learn how to perform a backward wristlock: Omote Gyaku. This is a basic move that can be done in different variations. First, place your thumb on the back of their hand and turn the wrist around. After this, turn it sideways and turn it up and over. Doing this will twist the wrist and lock it so the opponent falls down to the ground with pain. Just a small amount of force sets off a chain reaction in all the joints in the entire body. Once you have this down, it's a very eff...

How To: Do a sodium and water experiment

In this video tutorial, viewers learn how to do a sodium and water experiment. Sodium is a silver metal that is very reactive. When exposed oxygen in the air, an outer coding of sodium oxide will form. Simply drop a piece of sodium into a cup of water. When dropped in water, sodium reacts to form sodium hydroxide and hydrogen gas. The sodium will constant move around in the water. Sometimes the heated reaction will cause the nitrogen gas to ignite. Under the right condition, it may even cause...

How To: Survive an attack in the street

The video describes an easy way to survive an attack from someone in the street. When the assailant grabs your, your first reaction should be to guard against their initial blow. Then, punch them in the groin, grab them around there neck in a sleeper hold type move using your arm to wrap around the back of their head and/or neck. Proceed to knee them hard either in the stomach or groin, and then simply push them off of you presumably giving you enough time to run and escape.

How To: Melt Styrofoam with nail polish remover

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.

How To: Make an Assassin's Creed hidden blade prop

Adam from Chemical Reaction wants to show you a little movie magic. This video tutorial will show you how to make an Assassin's Creed hidden blade prop for your homemade film. If you're a fan of the Assassin's Creed video game, then you can't not make this hidden blade. This is a great prop for anybody wanting to recreate it for a fan film. It's cheap and quite easy and works pretty well.