CHEMICAL BONDS
involves a transfer of an electron, so one atom gains an electron while one atom loses an electron. One of the resulting ions carries a negative charge (anion), and the other ion carries a positive charge (cation). Because opposite charges attract, the atoms bond together to form a molecule.
Two or more reactants form one product.
Which type of common reaction is this? Sodium and chlorine to form sodium chloride.
2Na + Cl2 ----> 2NaCl
involves the sharing of electrons between two atoms. The pair of shared electrons forms a new orbit that extends around the nuclei of both atoms, producing a molecule.
In these reactions, a more active element displaces (kicks out) another less active element from a compound. For example, if you put a piece of zinc metal into a copper(II) sulfate solution, the zinc displaces the copper.
These bonds are stronger than single covalent bonds and they are characterized by the sharing of four or six electrons between atoms, respectively.
Two atoms connected by a covalent bond may exert different attractions for the electrons in the bond, producing an unevenly distributed charge resulting with one end of the molecule slightly negative and the other end slightly positive.
In these reactions, also called a metathesis reaction, two chemicals (normally ions) are displaced. Most of the time, reactions of this type occur in a solution, and either an insoluble solid (precipitation reactions) or water (neutralization reactions) will be formed.
An oxidation-reduction (redox) reaction is a type of chemical reaction that involves a transfer of electrons between two chemical species. An oxidation-reduction reaction is any chemical reaction in which the oxidation number of a molecule, atom, or ion changes by gaining or losing an electron.
An electrostatic attraction between two polar groups that occurs when a hydrogen (H) atom, bound to a highly electronegative atom such as nitrogen (N), oxygen (O), or fluorine (F), experiences the electrostatic field of another highly electronegative atom nearby. The now electropositive hydrogen part of a molecule is attracted to the electronegative part of another molecule.
This type of reaction occurs when a compound, usually one containing carbon, combines with the oxygen gas in the air. This process is commonly called burning. Heat is the most-useful product of most of these types of reactions. These are also a type of redox reaction.
What is the name of the following ionic compound?
NaBr
Sodium Bromide
This type of "Square" shows the genotypes two individuals can produce when crossed.
These bonds are the force of attraction between valence electrons and the metal atoms. It is the sharing of many detached or "free" electrons between many positive ions, where the electrons act as a "glue" giving the substance a definite structure. It is unlike covalent or ionic bonding.
These reactions are really the opposite of combination reactions. In these reactions, a single compound breaks down into two or more simpler substances. An example is given below:
2H2O2 ----> 2H2O + O2
Decomposition reaction
Balance the following equation
__Al + __NaOH ---> __Na3AlO3 + __H2
2Al + 6NaOH ---> 2Na3AlO3 + 3H2