Questions

Historians divide the ancient history of Egypt into three periods. the Old Kingdom, the Middle Kingdom and the New Kingdom. The Old Kingdom is called the Age of the Pyramids.

Maryland was established by Calvert brothers as a refuge for Roman Catholics prosecuted in England.

Panama Canal is called the 'Gateway of the Pacific'.

Covalent bonding occurs when pairs of electrons are shared by atoms. Atoms will covalently bond with other atoms in order to gain more stability, which is gained by forming a full electron shell. By sharing their outer most (valence) electrons, atoms can fill up their outer electron shell and gain stability.

Examples of compounds with covalent bonds ::

HCl, CO2, O2,... 

In the history, at the time of British rule in 1800's, the island of Sri Lanka formerly known as Ceylon. It is a south asian country located in the northest of the indian ocean.

The Mirror can turn everything around without moving.