Counting Atoms and Chemical Reaction 4/9/17

Summary: An ionic bond is held together by the attraction between opposite charges. An ionic bond forms between a metal and a nonmetal. To form an ionic compound you need both a positive and negative ion.  A positive ion is an atom that has lost one or more electrons giving it a positive charge. A negative ion is an atom that has gained one or more electrons giving it a negative charge. Metals have a tendency to lose electrons to form a positive ion, while non metals normally gain electrons to form a negative ion. When you have a covalent bond you have two different atoms that share electrons because of potential energy. Covalent bonds are with two non metals. In order to form a covalent bond both atoms need a strong enough attraction and they need the room for the electrons in their outer shell. Ionic bonds are when electrons are transferred between atoms while covalent bonds share electrons.

 S&EP-Using Mathematics: When looking at a chemical formula, you can see the reactants that yield a product, but most people do not take the time to count how many atoms there are in each compound or molecule. Depending on how the formula is written,  there are different ways to count the atoms. Let's use C6H12O6. We know that there are 3 elements or at least 3 atoms because of 3 capitol letters. The subscript or small number tells you how many of the atom there is of the one before it. So in this case, there are 6 carbon atoms, 12 hydrogen atoms, and 6 oxygen atoms. So what if there's a coefficient? Let's try 4CO2. Since there is a coefficient, we use the distributive property. In other words, it is multiplied by either the subscript or one depending on the formula. For this example, we have at least two atoms because there are two capitol letters. Since there is no subscript for carbon, we multiply four by one to get four.The oxygen however, has a subscript of 2. So we multiply 4 by 2 to get 8 oxygen atoms. In total the compound has 12 atoms. Because of this now I understand how math and science correspond with one another.

 XCC-Cause & Effect: Chemical reactions are shown scientifically with chemical equations. Chemical equations are always balanced. This means that there are the same number of each atom before and after the reaction. The Law of Conservation of Mass says that atoms can not be created or destroyed in a chemical reaction. This is why equations are always balanced, because there is not extra mass or mass taken away. Reactions occur when two or more molecules interact with one another. As well as chemical reaction can happen with anything, just as long as a chemical change occurs. Chemical reactions are a way to have some fun in the classroom. But if you know what's happening, that makes it so much better.
Multiplier: This week I was a creator because I offered to contribute the experiment as much as possible, such as adding the baking soda into the mixture.

Comments

Post a Comment

Popular posts from this blog

Amedeo Avogadro - 5/27/18

Image
Summary : Amedeo Avogadro was an Italian scientist who created what is now known as Avogadro's law. Known as a founder of the atomic-molecular theory, he was the first scientist to realize that elements could exist in the form of molecules rather than as individual atoms. His biggest contribution to science, Avogadro’s law, states that equal volumes of gasses under the same conditions of pressure and temperature will contain an equal number of molecules. Amedeo Avogadro was born on August 9th 1776 to Filippo Avogadro and Anna Maria Vercellone. Coming from a family of lawyers, Advogadro was guided to a legal career, and became a bachelor of jurisprudence in 1792. Despite a successful legal career; Avogadro has started private studies of mathematics and physics, which then he pursued full time. SP8 - Communicating Information : This week, I communicated information in the form of a wanted poster about a certain scientist. I decided to create a wanted poster about Amedeo
Read more

Roller Coaster Project Blog - 2/18/18

Summary : A roller coaster ride is a thrilling experience which involves a lot of physics. Part of the physics of a roller coaster is the physics of work and energy. The ride often begins as a chain and motor which exerts a force on the train of cars to lift the train to the top of a vary tall hill. Once the cars are lifted to the top of the hill, gravity takes over and the remainder of the ride is an experience in energy transformation. At the top of the hill, the cars possess a large amount of potential energy. Potential energy is dependent upon the mass of the object and the height of the object. As the cars descend the first drop they lose much of this potential energy in accord with their loss of height. The cars subsequently gain kinetic energy. Kinetic energy is dependent upon the mass of the object and the speed of the object. Therefore, their original potential energy is transformed into kinetic energy. Backward-Looking:  How much did you know about the subject before we
Read more

Wave Communication - 3/25/18

Image
Summary : There are two types of signals, analog and digital. An analog signal changes in frequency and amplitude all the time in a way that matches the changes in the voice or music being transmitted. A digital signal has just two values, which we represent as 0 and 1. An analog signal varies in frequency and amplitude. A digital signal has two values, 0 and 1 (or ‘on’ and ‘off’). The signal is converted into a code using only the values 0 and 1. The signal becomes a stream of 0 and 1 values. These pulses are added to the electromagnetic wave and transmitted. The signal is received and then decoded to recover the original signal. Both analogue and digital signals can pick up unwanted signals that distort the original signal. Digital signals can be cleaned up in a process known as regeneration because each pulse must be a 0 or a 1, so other values can be removed. Analogue signals can be amplified, but the noise is amplified too. This is why digital signals give a
Read more