Elements, Molecules, Compounds Flashcards
Note
Most chemicals in the body are in the form of molecules
Molecules
Are particles of matter that are composed of one or more atoms. It’s the larger chemical unit of atoms
Note to remember
Atoms usually unite with each other to form larger chemical units called molecules
Chemical formula
Determines atoms present in a compound
The formula for a compound contains..
Symbols that represent each element in the molecule
Note to remember
The number of atoms of each element in the molecule is expressed as a subscript after the elemental symbol
For example; each molecule of the compound carbon dioxide has one carbon (C) atom and two oxygen (O) atoms; thus its molecular formal is CO2