The States of Matter

• Solids

• have a rigid shape and fixed volume. The external shape can reflect the atomic and molecular arrangement.
• Arrangement of atoms or molecules in solid.
• Crystalline (distinct, repeatable pattern)
• Amorphous (somewhat ordered, random pattern)

• Liquids

• have volume but no fixed shape. Their shape is defined by their container.
• Fluid

• Gases

• Volume is defined by their container and they expand to fill their container.
• Their movement is unrestricted in their container.
• Good theoretical understanding