Allergic Reaction Search Results

How To: Experiment with carbon dioxide gas

Mr. G plays with chemicals and fire (what a surprise), for a really cool demonstration. An experiment you'll want to try, and probably can try immediately, as all materials (vinegar and baking soda) are likely in your house already. Exothermic reaction and gas displacement at its best!

How To: Pull the exploding door prank

This simple technique to creating a bang when people open a door is sure to scare the daylights out of your friends. Using party poppers, you can take them apart and tie them across a door entry. When a person enters, the poppers explode. There are great reaction shots on this video as welll.

How To: Get aloe from a plant

If you’ve got a minor cut or nasty sunburn you may reach for the aloe vera for the soothing and healing qualities. You don’t have to buy aloe, it is easy to extract the aloe from the inside of the leaf of a living aloe vera plant.

How To: 5 Must-Try Pranks

Simple household pranks are the best to set up because they don't require much to pull off just stuff you already have lying around your home. So if you're interested in pranking someone but don't want to go all out to get the tools and materials necessary this tutorial is for you.

News: The Buzz on Bee Pollen Benefits

While honey is one of the most popular ingredients on kitchen shelves the world over, honeybee pollen is still a relatively rare find in most households. It's not hard to guess why: eating pollen just sounds weird... it would probably sell a lot better if it had a more appetizing name, like honey. Furthermore, it looks unlike any other common ingredient, and the smell can be off-putting to some. But it's good, it's healthy, and it's altogether pretty awesome!

How To: Easily balance a chemical equation

In this video, we learn how to easily balance a chemical equation. In a balanced equation, there should be the same number of atoms on both sides of it. There are no rules that explain how you get a balanced reaction from expression. First, start on the molecule or compound that is the most atomically complex. After you look at this, you can learn how to make the rest of the equation equal to each side. This is a complex process that you must walk through to figure out, but it will result in ...

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: 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: 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...