Concrete is a composite material composed of fine and coarse aggregate bonded together with a fluid cement (cement paste) that hardens (cures) over time. Concrete is the second-most-used substance in the world after water, and is the most widely used building material. Its usage worldwide, ton for ton, is twice that of steel, wood, plastics, […]
When an electrolyte is dissolved in a polar solvent, such as water, it generates an electrically conducting solution. The electrolyte dissolves and splits into cations and anions, which scatter evenly across the solvent. Such a solution is electrically neutral. When an electric potential is introduced to such a solution, the cations are pulled to the
A chemical element, often simply called an element, is a species of atoms which all have the same number of protons in their atomic nuclei. Atomic number Symbol Name Phase at r.t. 1 H Hydrogen gas 2 He Helium gas 3 Li Lithium solid 4 Be Beryllium solid 5 B Boron solid 6 C Carbon solid 7 N Nitrogen gas 8
List of chemical elements Read More »