Elements and Compounds

By: Joel Mundackal

Element and Compound definition

An element is a pure substance that cannot be separated into simpler substances. A compound is two or more elements chemically combined. An example of an element is hydrogen, and an example of a compound is H20 or water.

Elements Changed to Compounds

When an element forms into a compound it loses its original property of an element. The properties of the compound and element are not the same because they can change their texture, color, and smell. When elements separate they get their original properties back.

Compounds Formed and Separated

Combining two or more elements forms a compound.Compound can be separated by chemical change. Elements cannot be separated because it is a pure substances.

Similarities and Differences between Elements and Compounds

Elements are made up of the same type of atom. Compounds are made up of 2 or more different types of atom.

Chemical Formula, Coefficients, and Subscripts

A chemical formula shows the atoms and their respective quantity in a compound or molecule. Examples are C02 reads as Carbon one atom and Oxygen 2 atoms. H20 reads as Hydrogen 2 atom and Oxygen 1 atoms.

Coefficients are the numbers attached to a variable. And a Subscript is the number below an element as H20, 2 s the subscript.

Counting Elements

You can count the element by its subscript. In H20 the subscript is 2, which means that hydrogen has 2 atoms and oxygen has 1 atom.