In nature, metal oxides are basic because they react to form bases with water. When acids react with metal oxides, salt and water are formed.... View Article
Compounds containing two elements may either have ionic or covalent bonding (so-called binary compounds). Its bonding would be ionic if a... View Article
Halogens are extremely reactive, and can be harmful or lethal in appropriate amounts to biological organisms. This reactivity is attributed to... View Article
The theoretical maximum efficiency that can be achieved when the heat engine operates between two temperatures is the Carnot Efficiency: the... View Article
Halogens are used in the sectors of chemicals, water and sanitation, plastics, pharmaceuticals, pulp and paper, textiles, military and oil.... View Article
The Heisenberg Uncertainty Theory states that both the location and the velocity of a particle are difficult to calculate simultaneously. In... View Article
The Bohr model suggests that the electrons in atoms are in various energy orbits around the nucleus (think of planets orbiting around the sun).... View Article
Batteries are devices that, from a redox reaction, produce an electric current. Basically, the battery turns chemical energy into electrical... View Article
Electrons migrate from the reducing agent at the anode to the oxidising agent at the cathode in all electrolytic cells. At the anode, the... View Article
Most domestic bleaches are chlorine-based and contain sodium hypochlorite (NaClO). This is an oxidising agent, allowing another chemical compound... View Article
The bonds that keep molecules together break apart and form new bonds during chemical reactions, rearranging atoms into different substances.... View Article
The uncertainty principle is not obeyed by macroscopic objects. As their wave-like properties become dominant, the same can not be said of... View Article
Electric charge, the basic property of matter carried by certain elementary particles, which determines how an electric or magnetic field affects... View Article
A very useful element is hydrogen. It is used for fertilisers, grinding metals, and methanol to make ammonia for the manufacture of artificial... View Article
Different ligands have different effects on the central ion energy of the d orbitals. The more energy is required to promote an electron from the... View Article
Lithium, sodium and potassium float on the surface of the water and are less dense than water. As hydrogen gas is formed, the metals travel... View Article
Usually, when treated with HBr or HCl alcohols, they undergo a nucleophilic replacement reaction to create an alkyl halide and water. In ethanol,... View Article
Sodium chloride, potassium phosphate and magnesium sulfate are the three types of ionic compounds. Compounds that are made up of ions are ionic... View Article
At the critical temperature above which different liquid and gas phases do not exist, the critical pressure is the vapour pressure of a fluid.... View Article
Since the difference in electronegativity between the two elements is much greater than that of two elements in a covalent bond, ionic bonds are... View Article
