### Theory about Scientific Notation

Scientific Notation Scientific Notation helps us to express in an easier way those numerical quantities that are too large or, conversely, too small. It is also known as Exponential Notation and it can be […]

### Covalent Bond theory

Covalent Bond Covalent Bond (nonmetal-nonmetal): There are many molecules whose formation can not be explained by the ionic bond, the simplest cases are molecules which are composed of identical atoms, such as H2, […]

### Dynamics theory

Dynamics Dynamics is the part of physics that describes the time evolution of a physical system in relation to the causes of changes in physical and/or movement state. Dynamics’ aim is to describe factors […]

### Stoichiometry theory

Stoichiometry Stoichiometry theory Lavoisier’s law of mass conservation: The total mass of the substances involved in chemical transformation remains constant and therefore the sum of the masses of the reactants must be equal to […]

### Powers theory

Powers Multiplication of Powers with the same base, add exponents Division of powers with the same base, subtract the exponents Power of a power, it’s the same base and multiplied the exponents […]

### Chemical calculations theory. Dissolutions

Dissolutions Dissolutions are homogeneous mixtures resulting from the interposition of atoms, molecules or ions from two or more substances, called components, which are involved in varying proportions. WAYS TO EXPRESS THE CONCENTRATION OF […]

### Kinematics theory

Kinematics Kinematics is the branch of classical mechanics that describes the motion of bodies (objects) and systems (groups of objects) without consideration of the forces that cause the motion. When we study the motion […]

### Chemical calculations theory. States of matter aggregation.

States of matter aggregation The matter is present in the nature in three different States of matter aggregation: solid, liquid and gas. Solids have fixed shape and volume. Liquids have fixed volume, but its […]

### Second Principle of Thermodynamics theory

Second Principle of Thermodynamics Thermodynamics is the branch of physical science concerned with heat and its relation to other forms of energy and work. It defines macroscopic variables (such as temperature, entropy, and […]