general chemistry help high school

Electron affinity is the amount of energy released, when an isolated gaseous atom accepts an electron to form a negative ion. The other atom participating in the formation of an ionic compound must form an anion by gaining an electron (s). Higher electron affinity favours the formation of an anion..

They are generally solids with characteristics such as hardness, malleability, ductility high tensile strength, lustre and ability to conduct heat and electricity. For example: Copper, iron, zinc e..

Boron is unreactive to most chemical reagents at ordinary temperature. It reacts only with strong oxidizing agents such as fluorine and concentrated nitric acid at room temperature. However, it combines with metals at very high temperatures to form borides, which are generally ..

This method is based on the relative solubility of the compounds in organic solvents versus aqueous medium. The organic liquid in which the compound is more soluble is generally called as 'solvent'. The solvent chosen should satisfy the following conditions: The solvent should be immis..

The catalysts used in this process are platinum or vanadium pentoxide (V 2 O 5 ) that are heated to a high temperature. The optimum temperature required is 450 - 500 o C. Remember:- Low temperature favours the oxidation of sulphur dioxide. If the temperature is too low, the rate o..

The noble gases are generally inert and do not participate in the reactions easily. The inertness of noble gases is due to the following reasons. i) The atoms of noble gases have stable closed shell electronic configuration. ii) The noble gases have exceptionally high..

More than 80 elements in the periodic table are metals. Metals are solids at ordinary temperature and pressure, with the exception (of mercury and gallium). Metals have characteristic properties such as: High thermal and electrical conductivity. Luster and high reflectivity. Mal..

Bonding in Metallic Solids - More than 80 elements in the periodic table are metals. Metals are solids at ordinary temperature and pressure, with the exception (of mercury and gallium). Metals have characteristic properties such as: High thermal and electrical conductivity. Luster and ..

Amides are generally prepared by the reaction of acyl chlorides or anhydrides with ammonia or amine..

Coal and petroleum have organic origin, being decomposed plant and animal matter buried deep inside the earth. Coal is mined like any other mineral. The chief coal producing countries in the world are China, U.S.A., U.S.S.R., U.K., Germany, Poland, Australia and India. In India, coal is mainly min..