Chemical symbols and formulas and observing metter

Chemical symbol

an abbreviation of a name of an element

Capitol letter

Only first letter is capitol is there is more than one letter

Chemical formula:

The combination of symbols that represent the elements contained in a substance and the relative number of atoms of each element

Subscript

The number printed below the line of type indicating the total number of atoms of a given element in a chemical compound

Chemical formula examples

Chalk: CaCO3

Salt: NaCl

Particulate level matter

observing matter at the level of their atoms and molecules

macroscopic

observing matter that is large enough to be observed by the unaided eye

Models

Tool to understand and interpret natural phenomenon that can be physical, mathamatic, or conceptual and represent, explain, or predict observed behavior