What Is a Megacity

question 7

Essay

What is a megacity?

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Definitions:

Inorganic Compound

A simple substance that does not contain a carbon backbone.

Carbon

Carbon is a chemical element with symbol C and atomic number 6, essential to life on Earth, forming a vast number of compounds including fossil fuels and DNA.

Valence Electrons

The electrons in the outer electron shell, known as the valence shell, of an atom; in the formation of a chemical bond, an atom can accept electrons into its valence shell or donate or share valence electrons.

Isotopes

Variants of a particular chemical element that differ in neutron number, and consequently in mass, but not in chemical properties.