3) In hardware design, a prototype is a hand-built model that represents a manufactured (easily replicable) product sufficiently for designers to visualize and test the design. The word prototype comes from the Latin words proto, meaning original, and typus, meaning form or model.
In chemistry, a salt is an ionic compound which is made up of two groups of oppositely charged ions. The ion with a positive charge is called a cation, and the one with a negative charge is called an anion.
Chemical formula for salt. Salt is an ionic compound formed by the action of an acid on a substance. There are many different types of salts. The most common salt is sodium chloride, NaCl or table salt, and is made up of the elements sodium and chlorine.hemical formula for salt. Salt is an ionic compound formed by the action of an acid on a substance. There are many different types of salts. The most common salt is sodium chloride, NaCl or table salt, and is made up of the elements sodium and chlorine.