Movement of Ion

Movement of Ion particles

* You can move ion particles with the mouse. Movement of Ion particles Ions acquire electric charge by gaining or losing valence electrons, depending on the type of atom. Electric forces act between charged substances. A pushing force acts between … more

Fuel Cell

Fuel Cell

Fuel cell A fuel cell is a device that converts chemical energy into electrical energy in a reaction in which hydrogen is oxidized to produce water. Fuel cells have less heat loss, making them more energy-efficient than conventional fuel systems. … more

Standard Reduction Potentials

Standard Reduction Potential

Standard hydrogen electrode A platinum electrode is inserted in a solution with a concentration of H+ of 1M, and hydrogen gas at 25℃ of 1 atm surrounding the platinum electrode is in equilibrium with H+. At this time, the electrode … more

Polar Molecule & Nonpolar Molecule

Polar Molecule & Nonpolar Molecule

Polar molecule Polar molecules have polar covalent bonds between their constituent atoms, and the shape of the molecule is asymmetric. Therefore, the centers of positive and negative charges do not coincide. Just as there are poles on both sides of … more

Electrolysis of Water

Electrolysis of Water

Electrolysis of Water When electrolysis is performed using a dilute aqueous NaOH solution as an electrolyte, hydrogen gas is generated at the cathode (-), and oxygen gas is generated at the anode (+). The reaction equation is as follows. (+)pole: … more

Electric Plating

Electric Plating

Electric Plating Electroplating is a technique of depositing a thin film of another metal on the surface of a metal. (-) The electrode is connected to the object to be plated, (+) The electrode is connected to plating material such … more

Activity Series of Metals

Activity Series of Metals

Ionization tendency of metal The tendency of metals to lose electrons and become cations is called the ‘ionization tendency.’ The ionization sequence is an ordered list of ionization trends. The greater the metal’s ionization tendency, the easier it is to … more