What are the characteristics of a chemical reaction?
Chemical reaction:
Characteristics of a chemical reaction:
(a) Give one example of a chemical reaction.
(b) State two characteristics of the chemical reaction which takes place when dilute sulphuric acid is poured over zinc granules.
(c) Give two characteristics of the chemical reaction which occurs on adding potassium iodide solution to lead nitrate solution.
(a) What ar noble gases? What are the characteristics of the electronic configuration of noble gases? (b) What is the cause of chemical bonding (or chemical combination ) of an atom of an element?
What characteristics do you expect from an electron-deficient hydride with respect to its structure and chemical reactions?