Negative Reaction Search Results

How To: Work with SN2 reactions in stereochemistry

In this free video science lesson from Internet pedagogical superstar Salman Khan, you'll learn how to handle SN2 substitution reactions in stereochemistry. Whether you need help studying for that next big test or could just use a hand finishing your homework, you're sure to be well served by this video lesson. For more information, including detailed, step-by-step instructions, take a look.

How To: Work with reaction mechanisms in organic chemistry

In this free video science lesson from Internet pedagogical superstar Salman Khan, you'll learn how to handle reaction mechanisms in organic chemistry. Whether you need help studying for that next big test or could just use a hand finishing your homework, you're sure to be well served by this video lesson. For more information, including detailed, step-by-step instructions, take a look.

How To: Use Markovnikov's rule to determine the likelihood of an addition reaction

In this free video science lesson from Internet pedagogical superstar Salman Khan, you'll learn how to use Markovnikov's rule to figure out which addition reaction is most likely in organic chemistry. Whether you need help studying for that next big test or could just use a hand finishing your homework, you're sure to be well served by this video lesson. For more information, including detailed, step-by-step instructions, take a look.

How To: Understand how metals react in hydrochloric acid

In this video tutorial the instructor talks about Hydrochloric acid (HCL) and how it reacts to a few metals. To try this out take 30 ml of concentrated hydrochloric acid in a beaker. You need to employ caution while handling acids, especially if you use strong ones. Now you can throw small pieces of different metals into it carefully to see how it reacts with different metals. For instance when this HCL comes in contact with metals various reaction take place depending up on the metal. Like i...

How To: Use "It's + adjective + infinitive" in English

In this video, we learn how to use "It's + adjective + infinitive" in English. To form these sentences, you will use the pattern that is stated above. This is very common in the English language, and you can put whatever you want into the sentence as the infinitive. You can change this from "it's hard to do" to It's not hard to do" to "it's easy to do". You can also make something negative, by giving it the prefix "im", which would change "possible" to "impossible". You can also ad in "un" to...

How To: Understand how to multiply fractions

Multiplying fractions are very simple, just multiply the numerators of the fractions to get the new numerator, and multiply the denominators of the fractions to get the new denominator. Let's say we have 2 fractions 1/2 and 1/2 when multiplying them 1/2x1/2=1/4 [1x1/2x2].

How To: Convert photos to digital

Buying a digital camera doesn't mean your old prints, slides, or negatives are obsolete. You can easily convert them with a scanner to bring them into the 21st century. Watch this video to learn how to convert photos to digital.

News: Whats Happen if You Mix Red Bull & Milk?

Casein is a protein that is found in milk. Groups of casein normally float around in milk without bonding. These groupings have a negative charge. The acidity of the Red Bull causes the negative charges on the casein groupings to become neutralized. Instead of pushing each other apart, the casein starts to clump together causing the milk to curdle and form solid matter.

How To: Make TCPO (for making glow sticks)

How to make TCPO or bis(2,4,6-trichlorophenyl) oxalate, used in glow stick reactions. WARNING: This procedure should only be performed by, or under the direct supervision of, an experienced chemist. Please refer to the material safety data sheets of all chemicals for their hazards. Synthesis must be performed in a fumehood.

How To: Buy the right jumper cables and jump your car

In this video tutorial, viewers learn how to jump start a car. When purchasing a jumper cable, don't purchase the cheapest set. It is also not necessary to purchase the most expensive. Begin by connecting the black cable on the negative terminal of the healthy car. Then connect the positive side of the red cable to the positive terminal of the healthy car. On the dead car, connect end of the cable to the positive side of the battery again, except this time you connect the negative end to a so...

How To: Perform negative resistance training

In this tutorial, we learn how to perform negative resistance training with Jennifer DiDonato. Start of sitting down with your elbow resting on your knee and holding a weight of your preference. Now, lift the weight up by counting 1,2,3. Bring the weight back down by counting to 6, and keep doing this back and forth. This will give you a different work out since you are doing resistance on your way down as well as going up. Do three sets of this exercise on both sides, then try to do one more...

How To: Solve multi-step equations with absolute values

This educational math video describes the steps necessary to solve an equation involving absolute values. "Absolute value" refers to the magnitude of a quantity and is always expressed as a positive number. You can think of absolute value as the distance a number would be from zero if plotted on a number line. Positive 17 and negative 17 both have the same absolute value because both are 17 units from zero on a number line. Because of this, all absolute value problems have two answers, one wh...

How To: Add positive & negative numbers

This explanation of positive and negative signs in addition is beneficial and easy to understand for young school aged children. The tutor of this video explains briefly about what to do with the different signs on both side of addition problem. The number line helps the viewer of this video to visually understand the concepts discussed. The tutor explains the direction of number line evaluation is dependent on the left side operand, which is also used to understand the concept of a number line.

How To: Multiply integers for beginners

In this introductory how - to video for pre-algebra, the lesson is simple and clear. You will learn the four basic rules for multiplying positive and negative numbers. You will be able to see the rules on the video screen and you will see two examples written on the white board. The video is short and only the basic explanation is given so you will not get lost in all the reasons behind the rules. This is a great video if you need a reminder on the rules for multiplication of positive and neg...

How To: Make a survival fire from a battery and staple

Check out this how-to video to start a fire using an AA battery and a staple. You can do this while listening to the classical guitar piece, "Malaguena" if you feel like it. It could save your life! With your battery: start by cutting the plastic away from the negative terminal. Watch the video survival training tutorial for more tips on starting an emergency fire!

How To: Make hydrochloric acid from salt

In this tutorial, we learn how to make hydrochloric acid from salt. First, you will pour some salt into a distil flask. After this, you will add in some concentrated sulfuric acid to the salt. Next, you will let these react with each other. You will start to see gasses bubble up and the excess hydrogen chloride gas come out through the top of the tube. To create a stronger reaction, you can add heat underneath the reaction. Then, test this by exposing it to ammonium chloride. If it's the righ...