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Video Química
"Heat of formation is the change in enthalpy when one mole of a compound is formed at 25 degrees Celsius and 1 atm from its elements. Heat of formation has been measured in labs and recorded so that w ...
"Heat is the transfer of kinetic energy from one object to another. According to the 2nd Law of Thermodynamics, heat always transfers from a hot object to a cold one, never the reverse." Fuente: Brigh ...
"Halogens are nonmetal elements located on the right side of the periodic table in Group 7. Halogens include the elements of florine, chlorine, bromine, iodine and astatine. Halogens have a negative 1 ...
"Half-life is the concept of time required for half of radioactive isotope’s nuclei to decay. The amount remaining is calculated as the (initial amount) (1/2) (# of 1/2 lives)^n in which the number of ...
Hipervinculo Química
"Half reactions are used for balancing oxidation - reduction reactions that occur in aqueous solutions. The sum of the oxidation and reduction half reactions forms the overall equation for the full re ...
Hipervinculo Química
"A synthesis reaction is a type of reaction in which multiple reactants combine to form a single product. Synthesis reactions release energy in the form of heat and light, so they are exothermic. An e ...
"The strength of acids and bases depend on how much an acid or base ionizes in solution. A strong acid or base completely ionizes in solution. In a neutralization reaction, an acid and  a base react ...
Video Química
"Stoichiometry is the study of measuring or predicting the amount of reactants or products in a chemical reaction based on the variables such as the mass of reactants or products, the limiting reactan ...
Video Física
"States of matter are the different phases which matters can take - gas, liquid and solid. Gas has no fixed shape and conforms to the volume of its container. A liquid has a distinct volume but assume ...
Video Química
"Graham’s Law states that the rate of effusion for a gas is inversely proportional to the square root of its molar mass. " Fuente: BrightStormGraham's Law es un contenido didáctico (en inglés) de ©Bri ...
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