Elements and Compounds

Atom:  The smallest particle of an element

Chemical Formula:  represents the type and matter of atoms present in a particular substance

Chemical Symbol:  one of two letters representing a chemical element

Compound:  composed of two or more different elements that are chemically combined

Element:  a pure substance composed of the same type of atom throughout

Molecule:  refers to the simplest unit of a chemical compound that can exist, formed when two or more atoms combine chemically.

Solution:  a liquid mixture in which the minor component (the solute) is uniformly distributed within the major component (the solvent).

Mixture:  a substance made up of two or more different substances that are physically combined.

Particle:  A particle is a small, localized piece of matter that can be described by its mass, density, or volume.

Periodic Table of Elements:   ordered arrangement of the chemical elements

Pure substance:  a single substance made of only one type of particle.

Ratio:  a term that is used to compare two or more numbers.