Matter (1)

Definition of atom

Atom is the smallest particles and the most basic unit of an element

Definition of molecule

Molecule is the combination of two or more atoms which are chemically combined

Definition of ion

Ion is a particle that is positively charged or negatively charged

Arrangement of atom in metal

Atoms in metal are arranged in a packed and neat manner

Arrangement of atoms in inert gas

Atoms are spread far apart with no regular arrangement

Examples of molecular substances (1)

Oxygen

Atom arrangement of a water molecule

Two particles of hydrogen combined with an oxygen particle

Atom arrangement of oxygen

Two particles of oxygen combined

Example of ionic substance

Salt

Atom arrangement of salt

Sodium ions and chloride ions stabilizing each other