Reactions and compounds. New substances are formed by chemical reactions. When elements react together to form compounds their atoms join to other atoms using chemical bonds. For example, iron and sulfur react together to form a compound called iron sulfide.Mixture of iron (grey) and sulfur (yellow) powders.hen elements react, their atoms join with other atoms to form compounds [compound: A compound is a substance formed by the chemical union (involving bond formation) of two or more elements. ] . Chemical bonds form when this happens, which involves atoms transferring or sharing electrons.
The 'red land' was the barren desert that protected Egypt on two sides. These deserts separated ancient Egypt from neighbouring countries and invading armies. They also provided the ancient Egyptians with a source for precious metals and semi-precious stones.
What bodies of water border Egypt? Quick Answer. Egypt is bordered by the Mediterranean Sea to the north and the Red Sea to the east, and the two seas are connected by the Suez Canal. The country shares its western border with Libya, its southern border with Sudan and its northeastern border with the Gaza Strip and Israel. Continue Reading.