Chemistry

The cations and anions formed by electron gaining-losing are attached to the compound molecule with a static electric attraction force which is called ionic bond.

The acids which are partially ionized in aqueous solution are called weak acids.

The chemical substances which when used in limited amounts can be preserved for a long time through the processing of food substances are called food preservatives.

Coating of Zn on other metals is called galvanizing, coating with tin is called tin plating & coating with other metals by electrolysis is called electroplating.

Electrode is a metallic and nonmetallic electric conductor. These are called electronic conductors. Electrode connects the electronic conductor and solution (which convey ions) of electrochemical cell.

Nonmetal oxides get dissolved in water vapor and produce some acids which come down to earth with rainwater, this is called acid rain.

Petroleum, coal natural gas, etc. are called fossil fuel. The dead plants and crops exist under the earth surface for 200 million years or more under high temperature and pressure they convert to coal, natural gas or mineral oils are known as fossil fuel. These substances under different processes for thousands of years are converted and … Read more

A reaction in which a new compound is formed by combination of two or more elements or molecules is called an addition reaction.