Wait a second!
More handpicked essays just for you.
More handpicked essays just for you.
Chemical Bonding Note
Don’t take our word for it - see why 10 million students trust us with their essay needs.
Recommended: Chemical Bonding Note
An atom. From the smallest to the biggest, every atom (excluding noble gases) shares the same desire: to be able to have a full octet, meaning a filled valence shell of eight electrons! Why? Just like how you are unstable in life when something is missing, atoms are unstable because they are lacking the necessary electrons for an octet. However, these atoms are smart and find a way to get what they want. What they do is what we call today as a chemical bond!
The number of valence electrons determine how unstable an atom is, in which determine an atom’s electronegativity. When looking at the periodic table (PTofE), you can see that on the top right corner is where the highest electronegativities are located, maxing at Fluorine. However, on the lower left corner you can see this is where the lowest electronegativities are located, reaching the limit at Francium. The electronegativity of each atom determines the types of bonds it forms when it is paired with another atom. The different types of bonds that can be created are: Metallic bonds, ionic bonds, polar covalent bonds, and nonpol...
This lab used many test to determine which functional groups were present in certain substance. The Benedicts test was used to identify reducing sugars (glucose and fructose) based on their ability to reuce the Capric ions to cuprous oxide at high pH. The Cuprous oxide is reddish orange in color when shown to be at high levels by the test, and greenish when at low levels. In both the onion juice and glucose solution the reducing sugar levels were very high, because the test came back dark orange. The starch solution had relatively low levels of reducing sugar present and this was seen by the test coming back cloundy blue, green and brown.
Caffeine is a very interesting chemical. Caffeine is found in many places including coffee plant, tea leaves, kola nuts and cocoa (1). Humans then process these plants into food stuff that contains caffeine such as tea, coffee and chocolate. Caffeine is composed of 14 atoms with a molecular formula of C8H10N4O2. It is one of the few central nervous system stimulants still legal in most countries (2). The chemical name for caffeine is 1-methyltheobromine (2).
However, the atoms are arranged a little differently. Two molecules that have this type of relationship are called isomers.
On the periodic table there are many groups that classified on it. The oxygen group is a very important group for life to exist at all. The oxygen group is the sixteenth group on the periodic table. There are five elements in the Oxygen group and they are: oxygen, sulfur, selenium, tellurium, and polonium. They each follow the octet rule (they want eight electrons in there outer shell). They each only have six in their outer shell, so they will want to get two more by gaining two electrons. They can share the electrons buy having a covalent bond. A covalent bod is when two or more atoms come together to share electrons. Also another name for the Oxygen group is the chalcogens.
Covalent compounds are formed when two or more non-metals react together. The covalent compound is actually made of molecules, and the name given depends on the structure of these molecules. Prefixes, like di- for two, tri- for three, tetra- for four, and so forth, are frequently used. Thus, NO2 is nitrogen dioxide and N2O4 is dinitrogen
elder and it now seems that the break in his bond with his mother has
Classes of Chemical Reactions Whenever a reaction takes place, energy is changed as well when the substances react chemically. Scientists have taken these changes in energy and generalized them. Scientists can take these generalizations and discover more about the nature and tendencies of matter. In this lab, the purpose was to perform seven reactions, write down their equations, and identify the type of reaction.
Genetics relies on chemistry to explain phenomena related to the field. The structure of DNA relies on chemistry. In fact, when James Watson and Francis Crick discovered the structure of DNA, they did so by building models based on the laws of chemistry. Chemistry also relates heavily to the structure and function of one of the main products of DNA: protein.
Every human has a natural tendency to organize. The periodic table is a perfect example of how organization betters the scientific world. Much like a poem, it tells a significant amount of information in a condescended fashion. With this map of the basic elements of the universe, we can find out how many electrons the element has and how much it weighs. Each element has its own separate set of such data; no two elements are the same.
In 1803 this theory was finalised and stated that (1) all matter is made up of the smallest possible particles termed atoms, (2) atoms of a given element have unique characteristics and weight, and (3) three types of atoms exist: simple (elements), compound (simple molecules), and complex (complex molecules).
The theory of quantum mechanics has divided the atom into a number of fundamental sub-atomic particles. Although the physicist has shown that the atom is not a solid indivisible object, he has not been able to find a particle which does possess those qualities. Talk of particles, though, is misleading because the word suggests a material object. This is not the intention for the use of the word in quantum physics. Quantum particles are, instead, representations of the actions and reactions of forces at the sub-atomic level. In fact, physicists are less concerned with the search for a material particle underlying all physical objects and more interested in explaining how nature works. Quantum theory is the means that enables the physicist to express those explanations in a scientific way.
Homology is one of the methods used as evidence for evolution. This term has changed over time as researchers increased their understanding of evolution. In 1843 homology was a term that was used for organs that were similar in different animals, this meant that the organ just had to be present regardless of the function (Haszprunar 1992). In 1982 the definition of homology was changed meaning the same as apomorphy; in other words, a trait that has developed between two species that was not present in the ancestor (Haszprunar 1992). Both of these definitions have a role in shaping the classical since of the definition of homology which stated by Herron and Freeman (2014) as similarity of structures regardless of the function.
Covalent bonds can also be formed in such a way as to form a giant
From these properties of bonds we will see that there are two fundamental types of bonds--covalent and ionic. Covalent bonding represents a situation of about equal sharing of the electrons between nuclei in the bond. Covalent bonds are formed between atoms of approximately equal electronegativity. Because each atom has near equal pull for the electrons in the bond, the electrons are not completely transferred from one atom to another. When the difference in electronegativity between the two atoms in a bond is large, the more electronegative atom can strip an electron off of the less electronegative one to form a negatively charged anion and a positively charged cation. The two ions are held together in an ionic bond because the oppositely charged ions attract each other as described by Coulomb's Law.
In ancient Greek the word atom meant the smallest indivisible particle that could be conceived. The atom was thought of as indestructible; in fact, the Greek word for atom means "not divisible." Knowledge about the size and make up of the atom grew very slowly as scientific theory progressed. What we know/theorize about the atom now began with a core theory devised by Democrotus, a Greek philosopher who proposed that matter consisted of various types of tiny discrete particles and that the properties of matter were