Why do some things explode?

I am now going to discuss with you the question that baffles most teens and kids: How do things explode?
There are many different kinds of explosions. One kind of explosion is one that can happen with rare metals such as alkali metals. Here is a link that will show you examples of some: http://www.youtube.com/watch?v=cqeVEFFzz7E
The metals being used in this video react because when the water hits the metal, it makes the molecules in the metal react and eventually it is so combusted and there is so much pressure that eventually the substance explodes because of the electrons being given off.
Another type of explosion is one that would have to do with gas. In this explosion, fire would touch the gas and heat the electrons and protons so that they would be under so much pressure that eventually it would explode in an enclosed area. Remember, the smaller the enclosed area, the bigger the explosion (in most cases). This is because the substance is under greater pressure.

Substances explode because of different things they react with that could effect the molecules and electrons in the atom and make it explode.

A more complex example of an explosion is sodium and water.

Sodium wants to give away one electron to be stable. It is very reactive with water.

(Na+H2O-NaOH+H2+little energy.)

Once that sparks a little in the water, it is enough to cause one of these reactions:

(H2+O2-H2O+energy) (energy being the explosion)

(H2=hydrogen gas O2=oxygen gas)

When hydrogen gas and oxygen gas combine together, they react with water making an explosion.

Explosions happen because of the matter or element giving off electrons to become stable. If these elements react with water, the formula i have stated above shows what will happen.

*The picture i have shown above (Top right) is a very good example of what i am talking about.

Types of Chemical Bonds

In the world of science, their are four(4) main types of chemical bonds: Ionic bonds, Covalent Bonds, Metallic Bonds, and Hydrogen Bonds.

IONIC BONDS
-An ionic bond is a chemical bond in which the electrical force between two oppositely charged ions hold the atoms together. In simpler words, it is a bond between a metal and a nonmetal. An example of such a bond is the bond between a sodium atom (Na) and a chloride atom (Cl), or between a magnesium atom (Mg) and an oxygen atom (O). In the illustration to the left, the sodium atom is sharing it's electrons with the chloride atom. One of the reasons why atoms bond is to share electrons to achieve ultimate stability. This is exactly what happens in each type of bond, just like this one. The atoms are bonding together to make a more complex substance. In this specific bond and in the picture, the result of the ionic bond is sodium chloride.

COVALENT BONDS
-A Covalent Bond is a chemical bond in which neighboring molecules share electrons in a strongly bonded group of at least two atoms. In simpler words, it is the bond between a nonmetal and a nonmetal. Picture an ionic bond giving and taking electrons while covalent bonds share them. The simplest covalently bonded molecules contain two atoms of the same element, such as the diatomic gases hydrogen (H2), nitrogen (N2), and oxygen (O2). These elements will make the most simplest bond. For example, in the case of hydrogen, each atom has a relatively unstable single electron. Two hydrogen atoms can pool their electrons to create a more stable two-electron arrangement. As long as the hydrogen atoms remain close to each other, then the sharing of electrons may continue and a chemical bond is able to occur. The same situation occurs for the oxygen ion. Each oxygen ion has eight electrons, so they will also share two pairs of electrons as well. These are the most common examples of covalent bonds.

METALLIC BONDS
-A Metallic Bond is a chemical bond in which electrons are redistributed so that they are shared by all of the atoms as a whole. However, this bond only occurs between a metal and a metal, hence metallic. A perfect example of such a bond is between two copper atoms, which is rather simple. Since copper has an oxidation number of positive two, that means that it will give away two electrons to "share" them with the other copper atom. This is why this bond is so simple. It is the sharing of electrons between two of the same atoms, copper and copper. However, not all metallic bonds are this simple. They can get much more complex, such as bonds between copper and zinc to create brass and bonds between copper and tin to create bronze. This also shows how important metallic bonds are in our life. Most of our things made of certain metals are created through metallic bonds. Without metallic bonding, then there would be no complex metals in our lives today, making parts of life very hard to get through.

HYDROGEN BONDS
-A Hydrogen Bond is a weak bond that may form after a hydrogen atom links to an atom of certain other elements (i.e. oxygen or nitrogen) by a covalent bond. This specific type of bond only occurs between hydrogen, oxygen, and nitrogen. This bond is primarily weak because of the hydrogen ion itself. It forms the weakest bond with any other element. Hydrogen is the weakest element out of all of the elements on the periodic table. Due to hydrogen's weakness, any type of bond that it will be able to make will most likely be relatively weak. The hydrogen atom is always capable of bonding with oxygen and nitrogen. This is because of the high amounts of electronegativity that lies in within them. Electronegativity is the tendency to gain or lose electrons. In simpler terms, oxygen and nitrogen are elements that want to bond to achieve stability. These elements are able to become very close to stability by bonding with hydrogen. The hydrogen gives the oxygen and nitrogen atoms just enough electrons to achieve stability. Since their number of electrons is so close to a stable number such as 8, their electronegativity rate is very high. This is why oxygen and nitrogen atoms make such hydrogen bonds.

What is stability in an atom?

Democritus was the person who found out that an atom cant be divided into anything smaller. Atoms are eternal and unchanging but the relationship between them is constantly changing. Atoms stabilize themselves by giving off and taking electrons. Molecules achieve maximum stability when electrons are shared between nuclei. Atoms achieve maximum stability when their electrons go in the rings of the lowest possible energies. The atom is most stable when there are 2 electrons in the first energy level, 8 in the second and so on and so fourth. Sometimes they share electrons to become stable. One atom gives away some electrons and another one gains them. The atom will be completely stable in the state with the smallest orbit. If there is an orbit of a lower energy the electron then can jump. If an electron jumps one orbit closer to the nucleus, it emits photons that moves away at the speed of light and lets out energy equal to the difference of the energy of the two orbits. This jump between the two energy levels is called a quantum jump. Each energy level has a certain amount of electrons that it can hold. These energy levels orbit around the nucleus. The first energy level can hold two electrons the second can hold eight the third can hold eighteen and the fourth can hold thirty two.