- Natural and man-made changes
- Periodic and non-periodic changes
- Desirable and undesirable changes
- Reversible and irreversible changes
- Physical and chemical changes
- Expansion and contraction of materials
- Expansion and contraction of solids
- Expansion and contraction of liquids
- Expansion and contraction of gases
- Applications of expansion and contraction
EXPANSION OF JOINTS
Bridges and sidewalks:
• Bridges and sidewalks are built in sections.
• There are spaces between the sections called expansion joints.
Read More...EXPANSION AND CONTRACTION OF LIQUIDS
• Liquids generally expand by larger amounts than solids.
• This difference in expansion rate is sometimes observed when the gas tank of a car is filled on a hot day.
Read More...EXPANSION AND CONTRACTION OF GASES
• Gases that are heated expand in their containers.
• The energy of the gas particles increase by heating.
Read More...